TLE6251-2G
Hi gh Speed CAN Transceiver with Wake and Failure Detecti on
1
Overview
Features
•
HS CAN Transceiver with data transmission rate up to 1 MBaud
•
Compliant to ISO 11898-5
•
Very low power consumption in Sleep mode
•
Bus Wake-Up and local Wake-Up
•
Inhibit output to control external circuitry
•
Split termination to stabilize the recessive level
•
Separate VIO input to adapt different micro controller supply voltages
•
Separate output for failure diagnosis
•
Optimized for low electromagnetic emission (EME)
•
Optimized for a high immunity against electromagnetic interference (EMI)
•
Very high ESD robustness, ±9 kV according to IEC 61000-4-2
•
Protected against automotive transients
•
Receive-Only mode for node failure analysis
•
TxD time-out function and RxD recessive clamping with failure indication
•
TxD to RxD short circuit recognition with failure indication
•
CANH and CANL short circuit recognition with failure indication
•
Bus dominant clamping diagnosis
•
Under-voltage detection at VCC, VIO and VS
•
Power-Up and Wake-Up source recognition
•
Short circuit proof and Over-Temperature protection
•
Green Product (RoHS compliant)
Potential applications
•
Mixed power supply HS-CAN networks
Product validation
Qualified for automotive applications. Product validation according to AEC-Q100.
Data Sheet
www.infineon.com/automotive-transceivers
1
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Overview
Description
As a successor of the TLE6251G, the TLE6251-2G is designed to provide an excellent passive behavior in Power
Down. This feature makes the TLE6251-2G extremely suitable for mixed power supply HS-CAN networks. The
TLE6251-2G provides different operation modes with a very low quiescent current in Sleep mode. Based on
the high symmetry of the CANH and CANL signals, the TLE6251-2G provides a very low level of electromagnetic
emission (EME) within a broad frequency range. The TLE6251-2G is integrated in a RoHS compliant PG-DSO-14
package and fulfills or exceeds the requirements of the ISO11898-5. The TLE6251G and the TLE6251-2G are
fully pin compatible and function compatible.
Type
Package
Marking
TLE6251-2G
PG-DSO-14
TLE6251-2G
Data Sheet
2
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Table of Contents
1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
3.1
3.2
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4
4.1
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
High Speed CAN Physical Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5
5.1
5.2
5.3
5.4
5.5
Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Normal Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receive-Only Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stand-By Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Go-To-Sleep Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sleep Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
11
11
12
13
13
6
6.1
6.2
6.3
Wake-Up Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Wake-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Wake-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mode Change via the EN and NSTB pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
15
16
17
7
7.1
7.2
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.3
7.3.1
7.3.2
7.4
7.5
Fail Safe Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CAN Bus Failure Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TxD Time-Out Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TxD to RxD Short Circuit Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RxD Permanent Recessive Clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bus Dominant Clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over-Temperature Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Under-Voltage Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Under-Voltage event on VCC and VIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Under-Voltage Event on VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Adaptation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Split Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
18
19
19
20
20
21
21
22
22
23
23
23
8
Diagnosis-Flags at NERR and RxD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9
9.1
9.2
9.3
General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
10.1
10.2
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Functional Device Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
11
11.1
11.2
11.3
11.4
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ESD Robustness according to IEC61000-4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Drop over the INH Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mode Change to Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Sheet
3
25
25
26
26
32
32
33
33
33
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
11.5
Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
12
Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
13
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Data Sheet
4
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Block Diagram
2
Block Diagram
VS
SPLIT
VCC
CANH
CANL
10
VCC
11
7
3
6
INH
EN
Mode Control
Logic
13
Driver
Output
Stage
12
14
Temp.Protection
NSTB
+
timeout
5
VIO
Diagnosis &
Failure
Logic
VCC/2
1
Wake-Up
Detection
TxD
VIO
Normal
Receiver
8
RxD Output
Control
Low Power
Receiver
NERR
VS
VIO
WK
9
Wake-Up
Comparator
4
RxD
2
GND
Figure 1
Data Sheet
Block Diagram
5
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Pin Configuration
3
Pin Configuration
3.1
Pin Assignment
TxD
1
14
NSTB
GND
2
13
CANH
VCC
3
12
CANL
RxD
4
11
SPLIT
VIO
5
10
VS
EN
6
9
WK
INH
7
8
NERR
Figure 2
Pin Configuration
3.2
Pin Definitions and Functions
Table 1
Pin Definitions and Functions
Pin Symbol Function
1
TxD
Transmit Data Input;
integrated pull-up resistor to VIO, “low” for dominant state.
2
GND
Ground
3
VCC
Transceiver Supply Voltage;
100 nF decoupling capacitor to GND recommend.
4
RxD
Receive Data Output;
“Low” in dominant state.
Output voltage level dependent on the VIO supply
5
VIO
Logic Supply Voltage;
Digital Supply Voltage for the logic pins TxD, RxD, EN, NERR and NSTB;
Usually connected to the supply voltage of the external microcontroller;
100 nF decoupling capacitor to GND recommend.
6
EN
Mode Control Input;
Integrated pull-down resistor;
“High” for Normal Operation mode.
Data Sheet
6
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Pin Configuration
Table 1
Pin Definitions and Functions (cont’d)
Pin Symbol Function
7
INH
Inhibit Output;
Open drain output to control external circuitry;
High impedance in Sleep mode
8
NERR
Error Flag Output;
Failure and Wake-Up indication output, active “low”
Output voltage level depends on the VIO supply
9
WK
Wake-Up Input;
Local Wake-Up input;
Wake-Up input sensitive to a level change in both directions, “high” to “low” and vice versa.
10
VS
Battery Voltage Supply;
100 nF decoupling capacitor to GND recommend.
11
SPLIT
Split Termination Output;
Stabilization output to support the recessive voltage level of the CAN bus lines.
12
CANL
CAN Bus “Low” Level I/O;
“Low” in dominant state
13
CANH
CAN Bus “High” Level I/O;
“High” in dominant state
14
NSTB
Stand-By Control input;
Integrated pull-down resistor;
“High” for Normal Operation mode.
Data Sheet
7
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Functional Description
4
Functional Description
CAN is a serial bus system that connects microcontrollers, sensor and actuators for real-time control
applications. The usage of the Control Area Network (abbreviated CAN) within road vehicles is described by
the international standard ISO 11898. According to the 7 layer OSI reference model the physical layer of a CAN
bus system specifies the data transmission from one CAN node to all other available CAN nodes inside the
network. The physical layer specification of a CAN bus system includes all electrical and mechanical
specifications of a CAN network. The CAN transceiver is part of the physical layer specification. Several
different physical layer standards of CAN networks have been developed over the last years. The TLE6251-2G
is a High Speed CAN transceiver with dedicated Wake-Up functions. High Speed CAN Transceivers with WakeUp functions are defined by the international standard ISO 11898-5.
4.1
High Speed CAN Physical Layer
TxD
VIO
t
VCC
CAN_H
CAN_L
= Logic Supply
= Transceiver Supply
= Input from the
Microcontroller
RxD = Output to the
Microcontroller
CANH = Voltage on CANH
Input/Output
CANL = Voltage on CANL
Input/Output
Differential Voltage
VDIFF =
VDIFF = VCANH – VCANL
VIO
VCC
TxD
t
VDIFF
Dominant
VDIFF = ISO Level Dominant
VDIFF = ISO Level Recessive
Recessive
t
RxD
VIO
t
Figure 3
Data Sheet
High Speed CAN Bus Signals and Logic Signals
8
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Functional Description
The TLE6251-2G is a High Speed CAN transceiver, operating as an interface between the CAN controller and
the physical bus medium. A High Speed CAN network (abbreviated HS CAN) is a two wire differential network
which allows data transmission rates up to 1 MBaud. Characteristic for a HS CAN network are the two CAN bus
states dominant and recessive (see Figure 3).
A HS CAN network is a Carrier Sense Multiple Access network with Collision Detection. This means, every
participant of the CAN network is allowed to place its message on the same bus media simultaneously. This
can cause data collisions on the bus, which might corrupt the information content of the data stream. In order
avoid the loss of any information and to prioritize the messages, it is essential that the dominant bus signal
overrules the recessive bus signal.
The input TxD and the output RxD are connected to the microcontroller of the ECU. As shown in Figure 1, the
HS CAN transceiver TLE6251-2G has a receive unit and a output stage, allowing the transceiver to send data to
the bus medium and monitor the data from the bus medium at the same time. The HS CAN TLE6251-2G
converts the serial data stream available on the transmit data input TxD into a differential output signal on
CAN bus. The differential output signal is provided by the pins CANH and CANL. The receiver stage of the
TLE6251-2G monitors the data on the CAN bus and converts them to a serial data stream on the RxD pin. A
“low” signal on the TxD pin creates a dominant signal on the CAN bus, followed by a “low” signal on the RxD
pin (see Figure 3). The feature, broadcasting data to the CAN bus and listening to the data traffic on the
CAN bus simultaneous is essential to support the bit to bit arbitration on CAN networks.
The voltage levels for a HS CAN on the bus medium are defined by the ISO 11898-2/-5 standards. Whether a
data bit is dominant or recessive, depends on the voltage difference between CANH and CANL:
VDIFF = VCANH - VCANL
To transmit a dominant signal to the CAN bus the differential signal VDIFF is larger or equal to 1.5 V. To receive
a recessive signal from the CAN bus the differential signal VDIFF is smaller or equal to 0.5 V.
The voltage level on the digital input TxD and the digital output RxD is determined by the power supply level
at the pin VIO. Depending on voltage level at the VIO pin, the signal levels on the logic pins (EN, NERR, NSTB, TxD
and RxD) are compatible to microcontrollers with 5 V or 3.3 V I/O supply. Usually the VIO power supply of the
transceiver is connected to same power supply as I/O power supply of the microcontroller.
Partially supplied CAN networks are networks where the participants have a different power supply status.
Some nodes are powered up, other nodes are not powered, or some other nodes are in a Low-Power mode,
like Sleep mode for example. Regardless on the supply status of the HS CAN node, each participant which is
connected to the common bus, shall not disturb the communication on the bus media. The TLE6251-2G is
designed to support partially supplied networks. In Power Down condition, the resistors of the Normal
Receiver are switched off and the bus input on the pins CANH and CANL is high resistive.
Data Sheet
9
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
5
Operation Modes
Five different operation modes are available on TLE6251-2G. Each mode with specific characteristics in terms
of quiescent current, data transmission or failure diagnostic. For the mode selection the digital input pins EN
and NSTB are used. Both digital input pins are event triggered. Figure 4 illustrates the different mode changes
depending on the status of the EN and NSTB pins. A mode change via the mode selections pins EN and NSTB
is only possible when the power supplies VCC, VIO and VS are active.
Normal Operation
mode
EN
1
EN -> 1
NSTB = 1
NSTB
1
INH
On
Start – Up
Supply VS
Supply VCC within t < tUV(VCC)
Supply VIO within t < tUV(VIO)
EN -> 0
NSTB -> 0
Receive Only
mode
NSTB
1
Power Down
INH
On
EN = 1
NSTB ->1
EN -> 0
NSTB = 1
EN
0
EN -> 1
NSTB -> 1
Stand-By
mode
EN = 0
NSTB -> 0
EN
0
EN = 0
NSTB -> 1
NSTB
0
INH
On
VS > VS,Pon
EN = 0
NSTB -> 1
VCC & VIO ON
EN = 1
NSTB -> 0
EN -> 0
NSTB -> 1
Go-To-Sleep
command
EN -> 1
NSTB -> 0
EN
1
NSTB
0
EN -> 1
NSTB = 0
EN -> 0
t < thSLP
NSTB = 0
INH
On
thSLP
Timing important
for mode selection
EN -> 0
t > thSLP
NSTB = 0
Wake-Up Event
Bus-Wake:
t > tBUSdom
Local-Wake:
t > tWake
Sleep mode
EN -> 1
NSTB -> 1
VCC & VIO ON
EN
0
VCC < VCC,UV
t > tUV(VCC)
Under-voltage
on VCC
Figure 4
Data Sheet
NSTB
0
Under-voltage
on VS
VS < VS,Poff
INH
Off
VIO < VIO,UV
t > tUV(VIO)
Under-voltage
on VIO
Operation Modes
10
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
In Sleep mode the power supply VCC and the logic power supply VIO are usually turned off. A Wake-Up event,
via the CAN bus or the local Wake-Up pin, shifts the device from Sleep mode into Stand-By mode.
The following operation modes are available on the TLE6251-2G:
•
Normal Operation mode
•
Receive-Only mode
•
Stand-By mode
•
Sleep mode
•
Go-To-Sleep command
Depending on the operation mode, the output driver stage, the receiver stage, the split termination and the
bus biasing are active or inactive. Table 2 shows the different operation modes depending on the logic signal
on the pins EN and NSTB with the related status of the INH pin, the SPLIT pin and the bus biasing.
Table 2
Overview Operation Modes
Operation mode
NSTB
INH
Bus Bias
SPLIT
Normal Operation 1
1
VS
VCC/2
VCC/2
Receive-Only
0
1
VS
VCC/2
VCC/2
Stand-By
0
0
VS
GND
Floating
Go-To-Sleep
1
0
VS
GND
Floating
Sleep
0
0
Floating
GND
Floating
Power Down
0
0
Floating
Floating
Floating
5.1
EN
Normal Operation Mode
In Normal Operation mode the HS CAN transceiver TLE6251-2G sends the serial data stream on the TxD pin to
the CAN bus while at the same time the data available on the CAN bus is monitored on the RxD output pin. In
Normal Operation mode all functions of the TLE6251-2G are active:
•
The output stage is active and drives data from the TxD to the CAN bus.
•
The normal receiver unit is active and provides the data from the CAN bus to the RxD pin.
•
The low power receiver and the bus Wake-Up function is inactive.
•
The local Wake-Up pin is disabled.
•
The INH pin is connected to VS.
•
The RxD pin is “low” for a dominant bus signal and “high” for a recessive bus signal”
•
The SPLIT pin is set to VCC/2.
•
The bus basing is set to VCC/2.
•
The failure detection is active and failures are indicated at the NERR pin. (see Chapter 8).
•
The under-voltage detection on the all 3 power supplies VCC, VIO and VS is active.
The HS CAN transceiver TLE6251-2G enters Normal Operation mode by setting the mode selection pins EN and
NSTB to “high” (see Table 2 or Figure 4).
5.2
Receive-Only Mode
The Receive-Only mode can be used to test the connection of the bus medium. The TLE6251-2G can still
receive data from the bus, but the output stage is disabled and therefore no data can be sent to the CAN bus.
All other functions are active:
Data Sheet
11
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
•
The output stage is disabled and data which is available on the TxD pin will be blocked and not
communicated to the CAN bus.
•
The normal receiver unit is active and provides the data which is available on the CAN bus to the RxD pin.
•
The INH pin is connected to VS.
•
The RxD pin is “low” for a dominant bus signal and “high” for a recessive bus signal.
•
The SPLIT pin is set to VCC/2.
•
The bus biasing is set to VCC/2.
•
The low power receiver and the bus Wake-Up function is inactive.
•
The local Wake-Up pin WK is disabled.
•
The failure diagnostic is active and local failures are indicated at the NERR pin (see Chapter 8).
•
The under-voltage detection on the all 3 power supplies VCC, VIO and VS is active.
The HS CAN transceiver TLE6251-2G enters Receive-Only mode by setting the EN pin to “low” and the NSTB to
“high” (see Table 2 or Figure 4).
5.3
Stand-By Mode
After the power-up sequence the TLE6251-2G enters automatically into Stand-By mode. Stand-By mode is an
idle mode of the TLE6251-2G with optimized power consumption. In Stand-By mode the TLE6251-2G can not
send or receive any data. The output driver stage and the normal receiver unit are disabled. Both CAN bus pins,
CANH and CANL are connected to GND and the Split termination output is floating. The following functions are
available in Stand-By mode:
•
The output stage is disabled.
•
The normal receiver unit is disabled.
•
The low power receiver is active and monitors the CAN bus. In case of a message on the CAN bus the
TLE6251-2G sets an internal Wake-Up flag. If the power supplies VCC and VIO are active, the Wake-Up event
is indicated by the RxD pin and the NERR pin (see Chapter 8). After first power-up or after an undervoltage
event on VS a wake-up is not signaled on RxD and NERR pin.
•
The local Wake-Up pin is active and a local Wake-Up event is indicated by the RxD and NERR pin, if the
power supplies VCC and VIO are active (see Chapter 8).
•
The INH output is active and set to VS.
•
Through the internal resistors RI (see Figure 1), the pins CANH and CANL are connected to GND.
•
If the power supplies VCC and VIO are active, the RxD pin indicates the Wake-Up events.
•
The TxD pin is disabled
•
The failure diagnostic is disabled.
•
The under-voltage detection on the all 3 power supplies VCC, VIO and VS is active.
•
The TLE6251-2G detects a Power-Up event and indicates it at the NERR pin (see Chapter 8).
There are several ways to enter the Stand-By mode (see Figure 4):
•
After the start-up sequence the device enters per default Stand-By mode. Mode changes are only possible
when VCC and VIO are present.
•
The device is in Sleep mode and a Wake-Up event occurs.
•
The device is in the Go-To-Sleep command and the EN pin goes low before the time t < thSLP has expired.
•
The device is in Normal Operation mode or Receive-Only mode and the EN pin and NSTB pin are set to
“low”.
Data Sheet
12
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
•
An under-voltage event occurs on the power supply VS. In case of an under-voltage event, the TLE6251-2G
device always changes to Stand-By mode regardless in which mode the device currently operates.
5.4
Go-To-Sleep Command
The Go-To-Sleep command is a transition mode allowing external circuitry like a microcontroller to prepare
the ECU for the Sleep mode. The TLE6251-2G stays in the Go-To-Sleep command for the maximum time
t = thSLP, after exceeding the time thSLP the device changes into Sleep mode. A mode change into Sleep mode is
only possible via the Go-To-Sleep command. During the Go-To-Sleep command the following functions on the
TLE6251-2G are available:
•
The output driver stage is disabled.
•
The normal receiver unit is disabled.
•
The low power receiver is active and monitors the CAN bus. In case of a message on the CAN bus the
TLE6251-2G sets an internal Wake-Up flag.
•
The local Wake-Up pin is active and can detect a local Wake-Up event.
•
The INH output is active and set to VS.
•
Through the internal resistors RI (see Figure 1), the pins CANH and CANL are connected to GND.
•
The TxD pin is disabled.
•
The failure diagnostic is disabled.
•
The under-voltage detection on all 3 power supplies VCC, VIO and VS is active.
Setting the NSTB pin to “low”, while the EN signal remains at “high”, activates the Go-To-Sleep command. The
Go-To-Sleep command can be entered from Normal Operation mode, Receive-Only mode and from Stand-By
mode.
5.5
Sleep Mode
The Sleep mode is a power save mode. In Sleep mode the current consumption of the TLE6251-2G is reduced
to a minimum while the device is still able to Wake-Up by a message on the CAN bus or a local Wake-Up event
on the pin WK. Most of the functions of the TLE6251-2G are disabled:
•
The output driver stage is disabled.
•
The normal receiver unit is disabled.
•
The low power receiver is active and monitors the CAN bus. In case of a message on the CAN bus the
TLE6251-2G changes from Sleep mode to Stand-By mode and sets an internal Wake-Up flag.
•
The local Wake-Up pin is active and in case of a signal change on the WK pin the operation mode changes to
Stand-By mode.
•
The INH output is floating.
•
Through the internal resistors RI (see Figure 1), the pins CANH and CANL are connected to GND.
•
If the power supplies VCC and VIO are present, the RxD pin indicates the Wake-Up event.
•
The TxD pin is disabled
•
The under-voltage detection on the power supply VS is active and sends the device into Stand-By mode in
case of an under-voltage event.
There are only two ways to enter Sleep mode:
•
The device can activate the Sleep mode via the mode control pins EN and NSTB.
•
An under-voltage event on the power supplies VCC and VIO changes the operation mode to Sleep mode.
In order to enter the Stand-By mode or the Sleep mode, the EN signal needs to be set to “low” a defined time
after the NSTB pin was set to “low”. Important for the mode selection is the timing between the falling edge
Data Sheet
13
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Operation Modes
of the NSTB signal and the EN signal. If the logical signal on the EN pin goes “low” before the transition time t
< thSLP has been reached, the TLE6251-2G enters Stand-By mode and the INH pin remains connected to the VS
supply. In the case the logical signal on the EN pin goes “low” after the transition time t > thSLP, the TLE62512G enters into Sleep mode simultaneous with the expiration of the time window thSLP and the INH becomes
disconnected from the VS supply and is floating. (see Figure 5).
thSLP
NSTB
t
EN
t
INH
t
t < thSLP
Normal Operation
mode
Go-To Sleep
command
Stand-By mode
thSLP
NSTB
t
EN
t > thSLP
t
INH
t
Normal Operation
mode
Figure 5
Go-To Sleep
command
Sleep mode
Entering Sleep Mode or Stand-By Mode
The signal on the CAN bus has no impact to mode changes. The operation mode can be changed regardless of
the CAN bus being in dominant state or in recessive state.
Data Sheet
14
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Wake-Up Functions
6
Wake-Up Functions
There are several possibilities for a mode change from Sleep mode to another operation mode.
•
Remote Wake-Up via a message on the CAN bus.
•
Local Wake-Up via a signal change on the pin WK.
•
A status change of the logical signals applied to the mode control pins EN and NSTB.
•
An under-voltage detection on the VS power supply.
In typical applications the power supplies VCC and VIO are turned off in Sleep mode, meaning a mode change
can only be caused by an external event, also called Wake-Up. In case the VCC and VIO power supply are
available, a mode change can be simple caused by changing the status on the mode control pins EN and NSTB.
6.1
Remote Wake-Up
A remote Wake-Up or also called bus Wake-Up occurs via a CAN bus message and changes the operation mode
from Sleep mode to Stand-By mode. A signal change from recessive to dominant, followed by a dominant
signal for the time t > tWake initiates a bus Wake-Up (see Figure 6).
t < tWake
CANH
CANL
„Recessive“ to „Dominant“
change
t > tWake
Wake-Up
No Wake-Up
t
INH
t
Normal
Operation
mode
Figure 6
Go-To
Sleep
command
Sleep mode
Stand-By mode
Remote Wake-Up
In case the time of the dominant signal on the CAN bus is shorter than the filtering time tWake, no bus Wake-Up
occurs. The filter time is implemented to protect the HS CAN transceiver TLE6251-2G against unintended bus
Wake-Up’s, triggered by spikes on the CAN bus. The signal change on the CAN bus from recessive to dominant
is mandatory, a permanent dominant signal would not activate any bus Wake-Up.
In Stand-By mode the RxD output pin and the NERR output pin display the CAN bus Wake-Up event by a “low”
signal (details see Chapter 8). Once the HS CAN Transceiver TLE6251-2G has recognized the Wake-Up event
and has changed to Stand-By mode, the INH output pin becomes active and provides the voltage VS to the
external circuitry.
Data Sheet
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Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Wake-Up Functions
6.2
Local Wake-Up
The TLE6251-2G can be activated from Sleep mode by a signal change on the WK pin, also called local WakeUp. Designed to withstand voltages up to 40V the WK pin can be directly connected to VS. The internal logic on
the WK pin works bi-sensitive, meaning the Wake-Up logic on the pin WK triggers on a both signal changes,
from “high” to “low” and from “low” to “high” (see Figure 7).
t < tWk(local)
VWK
t > tWk(local)
Wake-Up
No Wake-Up
VWK,H
t
INH
t
Sleep mode
Stand-By mode
t < tWk(local)
t > tWk(local)
VWK
VWK,L
No Wake-Up
Wake-Up
t
INH
t
Sleep mode
Figure 7
Sleep Mode
Stand-By mode
Stand-By Mode
Local Wake - Up
A filter time tWK(local) is implemented to protect the TLE6251-2G against unintended Wake-Up’s, caused by
spikes on the pin WK. The threshold values VWK,H and VWK,L depend on the level of the VS power supply.
In Stand-By mode the RxD output pin and the NERR output pin display the CAN bus Wake-Up event by a logical
“low” signal (details see Chapter 8). Once the HS CAN Transceiver TLE6251-2G has recognized the Wake-Up
event and has changed to Stand-By mode, the INH output pin becomes active and provides the voltage VS to
the external circuitry.
Data Sheet
16
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TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Wake-Up Functions
6.3
Mode Change via the EN and NSTB pin
Besides a mode change issued by a Wake-Up event, the operation mode on the TLE6251-2G can be changed
by changing the signals on the EN and NSTB pins. Therefore the power supplies VCC and VIO must be active.
According to the mode diagram in Figure 4 the operation mode can be changed directly from Sleep mode to
the Receive-Only mode and to the Normal Operation mode. A change from Sleep mode direct to Stand-By
mode is only possible via a Wake-Up event. For example by setting the NSTB pin and the EN pin to “high” the
TLE6251-2G changes from Sleep mode to Normal Operation mode (see Figure 8).
The pins EN and NSTB have a hysteresis between the “low” and the “high” signal in order to avoid any toggling
during the operation mode change.
NSTB
thSLP
VM,H
VM,L
t
EN
VM,H
VM,L
tMode
t
tMode
INH
t
Sleep mode
Figure 8
Data Sheet
Normal Operation
mode
Go-To-Sleep
command
Sleep mode
Wake-Up via Mode Change
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TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
7
Fail Safe Features
7.1
CAN Bus Failure Detection
The High Speed CAN Transceiver TLE6251-2G is equipped with a bus failure detection unit. In Normal
Operation mode the TLE6251-2G can detect the following bus failures:
•
CANH shorted to GND
•
CANL shorted to GND
•
CANH shorted to VCC
•
CANL shorted to VCC
•
CANH shorted to VS
•
CANL shorted to VS
The TLE6251-2G can not detect the bus failures:
•
CANH open
•
CANL open
•
CANH short to CANL
The TLE6251-2G detects the bus failures while sending a dominant signal to the CAN bus. After sending four
dominant bits to the CAN bus, a “low” on the NERR pins indicates the CAN bus failure. For the failure indication
the dominant bits require a minimum pulse width of 4 µs. In case the TLE6251-2G detects an CAN bus failure,
the failure is only indicated by the NERR pin, the transceiver doesn’t stop or block the communication, by
disabling the output stage for example.
CANH
CANL
Short to VCC
t
TxD
t
RxD
t
NERR
t
Four Dominant Bits
Figure 9
CAN Bus Failure CANH short to VCC
The communication on the CAN bus could still be possible even with a short CANH to VCC or CANH to VS.
Whether the CAN bus communication is possible or not, depends on parameters like the number of
Data Sheet
18
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
participants inside the CAN network, the network termination, etc. This figure shows a working CAN bus
communication as an example and it shall not be considered as a liability that on HS CAN networks the CAN
bus communication continues in every CAN bus failure case.
7.2
Local Failures
If a local failure occurs during the operation of the TLE6251-2G, the device sets an internal local failure flag.
The local failure flag can be displayed to the microcontroller during the Receive-Only mode and the failures
are indicated by a “low” signal on the NERR pin. The following local failures can be detected:
•
TxD time-out
•
TxD to RxD Short
•
RxD permanent Recessive Clamping
•
Bus Dominant Clamping
•
Over-Temperature Detection
7.2.1
TxD Time-Out Feature
The TxD time-out feature protects the CAN bus against permanent blocking in case the logical signal on the
TxD pin is continuously “low”.
In Normal Operation mode, a “low” signal on the TxD input pin for the time t > tTXD enables the TxD time-out
feature and the TLE6251-2G disables the output driver stage. In Receive-Only mode the TLE6251-2G indicates
the TxD time-out by a “low” signal on the NERR pin (see Figure 10). To release the output driver stage after the
permanent “low” signal on the TxD input pin disappears, a mode change from Receive-Only mode to Normal
Operation mode is required.
Data Sheet
19
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
TxD time–out
released
t = tTXD
Output stage
released
CANH
CANL
t
TxD time-out
TxD
t
RxD
t
EN
t
NSTB
t
NERR
Receive-Only
mode
Normal Operation mode
Figure 10
7.2.2
Normal Operation
mode
TxD Time-Out Feature
TxD to RxD Short Circuit Feature
A short between the pins TxD and RxD causes permanent blocking of the CAN bus. In the case, that the low side
driver capability of the RxD output pin is stronger as the high side driver capability of the external
microcontroller output, which is connected to the TxD pin of the TLE6251-2G, the RxD output signal overrides
the TxD signal provided by the microcontroller. In this case a continuous dominant signal blocks the CAN bus.
The TLE6251-2G detects the short between the TxD and the RxD pin, disables the output driver stage and sets
the internal local failure flag. In Receive-Only mode the TLE6251-2G indicates the TxD to RxD short by a “low”
signal on the NERR pin. The TLE6251-2G releases the failure flag and the output driver stage by an operation
mode change from Receive-Only mode to Normal Operation mode.
7.2.3
RxD Permanent Recessive Clamping
A “High” signal on the RxD pin indicates the external microcontroller, that there is no CAN message on the
CAN bus. The microcontroller can transmit a message to the CAN bus only when the bus is recessive. In case
the “high” signal on the RxD pin is caused by a failure, like a short from RxD to VIO, the RxD signal doesn’t mirror
the signal on the CAN bus. This allows the microcontroller to place a message to the CAN bus at any time and
corrupts CAN bus messages on the bus. The TLE6251-2G detects a permanent “high” signal on the RxD pin and
set the local error flag. In order to avoid any data collisions on the CAN bus the output driver stage gets
disabled. In Receive-Only mode the TLE6251-2G indicates the RxD clamping by a “low” signal on the NERR pin.
Data Sheet
20
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
The TLE6251-2G releases the failure flag and the output driver stage by an operation mode change or when
the RxD clamping failure disappears.
7.2.4
Bus Dominant Clamping
Due to a fail function on one of the CAN bus participants, the CAN bus could be permanent in dominant state.
The external microcontroller doesn’t transmit any data to the CAN bus as long as the CAN bus remains
dominant. Even if the permanent dominant state on the CAN bus is caused by a short from CANH to VCC, or
similar, the transceiver can not detect the failure, because the CAN bus failure detection works only when the
transceiver is active sending data to the bus. Therefore the TLE6251-2G has a bus dominant clamping
detection unit installed. In case the bus signal is dominant for the time t > tBus,t the TLE6251-2G detects the bus
clamping and sets the local failure flag. The output driver stage remains active. In Receive-Only mode the
TLE6251-2G indicates the bus dominant clamping by a “low” signal on the NERR pin.
7.2.5
Over-Temperature Detection
The output driver stage is protected against over temperature. Exceeding the shutdown temperature results
in deactivation of the output driver stage. To avoid any toggling after the device cools down, the output driver
stage is enabled again only after a recessive to dominant signal change on the TxD pin (see Figure 11).
An Over-Temperature event only deactivates the output driver stage, the TLE6251-2G doesn’t change its
operation mode in this failure case. The overtemperature event is indicated by a “low” signal on the NERR pin
in Receive-Only mode.
Thermal Shutdown
Hysteresis ΔTJ
Thermal Shutdown
Temp. TJSD
Output-Stage Release
Temp.
Cool Down
t
CANH
CANL
t
TxD
t
RxD
t
Normal Operation mode
Figure 11
Data Sheet
Release of the Transmission after an Over-Temperature event
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TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
7.3
Under-Voltage Detection
The TLE6251-2G provides a power supply monitoring on all three power supply pins: VCC, VIO and VS. In case of
an under - voltage event on any of this three power supplies, the TLE6251-2G changes the operation mode and
sets an internal failure flag. The internal failure flag is not indicated by the NERR output pin.
7.3.1
Under-Voltage event on VCC and VIO
An under-voltage event on the power supply VCC or the power supply VIO causes the change of the operation
mode to Sleep mode, regardless of the operation mode in which the TLE6251-2G might currently operate. The
logical signals on the digital input pins EN and NSTB are also disregarded. After the power supplies VCC and VIO
are activated again, the operation mode can be changed the usual way. From Sleep mode to Stand-By mode
by a Wake-Up event or from Sleep mode direct to Normal Operation mode, Receive-Only mode by the digital
input pins EN and NSTB.
The under-voltage monitoring on the power supply VCC and VIO is combined with an internal filter time. Only if
the voltage drop on each of these two power supplies is longer present as the time tDrop > tUV(VIO) (tDrop > tUV(VCC))
the operation mode change is activated (see Figure 12).
Under-voltage events on the power supplies VCC or VIO are not indicated by the NERR pin nor by the RxD pin.
VCC
t < tUV(VCC)
t > tUV(VCC)
VCC,UV
t
INH
t
Normal Operation mode / Receive–Only mode / Stand–By mode
or Go-To Sleep command
VIO
t < tUV(VIO)
Sleep mode
t > tUV(VIO)
VIO,UV
t
INH
t
Normal Operation mode / Receive–Only mode / Stand–By mode
or Go-To Sleep command
Figure 12
Data Sheet
Sleep mode
Under-Voltage on VIO or VCC
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TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Fail Safe Features
7.3.2
Under-Voltage Event on VS
If an under-voltage event is detected at the power supply VS, the TLE6251-2G immediately enters Stand-By
mode, regardless of the operation mode in which the TLE6251-2G operates. After the power supply VS has
been reestablished, the operation mode can be changed by applying a “high” signal to the EN pin or the NSTB
pin.
In the case the TLE6251-2G detects an under-voltage event on the VCC or VIO power supply, the TLE6251-2G
changes to Sleep mode. If the TLE6251-2G detects in Sleep mode an under-voltage event on the VS power
supply, the device enters Stand-By mode, even when the under-voltage event on the VCC or VIO power supply
is still present.
VS
VS,Pon
VS,Poff
t
any mode
Figure 13
7.4
Power Down
Stand-By mode
Under-Voltage on VS
Voltage Adaptation
The advantage of the adaptive microcontroller logic is the ratio metrical scaling of the I/O levels depending on
the input voltage at the VIO pin. Connecting the VIO input to the I/O supply of the microcontroller ensures, that
the I/O voltage of the microcontroller fits to the internal logic levels of the TLE6251-2G.
7.5
Split Circuit
The SPLIT output pin is activated during Normal Operation mode and Receive-Only mode and deactivated
(SPLIT pin high resistive) during Sleep mode and Stand-By mode. The SPLIT pin is used to stabilize the
recessive common mode signal in Normal Operation mode and Receive-Only mode. This is realized with a
stabilized voltage of 0.5 x VCC at the SPLIT pin.
Data Sheet
23
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Diagnosis-Flags at NERR and RxD
8
Diagnosis-Flags at NERR and RxD
Table 3
Truth Table
NSTB EN INH
1
1
0
1
0
0
High
High
High
Mode
Normal
Receive
Only
Stand-By
Event
No CAN bus failure
1)
Floating Sleep
1
“low”: bus
dominant,
“high”: bus
recessive
ON
“low”: bus
dominant,
“high”: bus
recessive
ON
0
0
OFF
1
1
0
0
1
1
0
Wake-up via CAN bus/no wake-up
request detected
1
Wake-up via pin WK2)
0
No VS fail detected
1
3)
VS fail detected3)
0
No TxD time-out,
Over-Temperature event,
RxD recessive clamping or
Bus dominant time out
detected4)
1
TxD time-out,
Over-Temperature event,
RxD recessive clamping or
Bus dominant time out
detected4)
0
Wake-up request detected5)6)
No Wake up request detected
0
SPLIT
CAN bus failure1)
5)
0
NERR RxD
5)
Wake-up request detected
5)
No wake-up request detected
OFF
1) Only valid after at least four recessive to dominant edges at TxD when entering the Normal Operation mode.
2) Only valid before four recessive to dominant edges at TxD when entering the Normal Operation mode.
3) Power-Up flag only available, when VCC and VIO are active. Power-Up flag will be cleared when entering Normal
Operation mode.
4) Valid after a transition from Normal Operation mode.
5) Only valid when VCC and VIO are active.
6) After first power-up or after an undervoltage event on VS, a wake-up is not signaled on the RxD and NERR output pin.
Data Sheet
24
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
General Product Characteristics
9
General Product Characteristics
9.1
Absolute Maximum Ratings
Table 4
Absolute Maximum Ratings1)
All voltages with respect to ground, positive current flowing into pin
(unless otherwise specified)
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min. Typ. Max.
Voltages
Supply voltage
VS
-0.3 –
40
V
–
P_9.1.1
Transceiver supply voltage
VCC
-0.3 –
6.0
V
–
P_9.1.2
Logic supply voltage
VIO
-0.3 –
6.0
V
–
P_9.1.3
CANH DC voltage versus GND
VCANH
-40
–
40
V
–
P_9.1.4
CANL DC voltage versus GND
VCANL
-40
–
40
V
–
P_9.1.5
Split DC voltage versus GND
VSPLIT
-40
–
40
V
–
P_9.1.6
Input voltage at WK
VWK
-27
–
40
V
–
P_9.1.7
Input voltage at INH
VINH
-0.3 –
VS + 0.3 V
–
P_9.1.8
-40
–
40
V
Max. differential voltage
between CAN and CANL
P_9.1.9
Differential voltage SPLIT to CANH VDiff,SPLIT -40
and CANL
–
40
V
Max. differential voltage
between SPLIT and CAN
P_9.1.10
–
40
V
Max. differential voltage
between WK and SPLIT,
CAN
P_9.1.11
-0.3 –
VIO
V
0 V < VIO < 6.0 V
P_9.1.12
Differential voltage CANH to CANL VDiff,CAN
Differential voltage WK to SPLIT,
CANH and CANL
VDiff,WK
Logic voltages at EN, NSTB, NERR, VLogic
TxD, RxD
-40
Currents
IINH(max) -5
–
0
mA
–
P_9.1.13
Junction Temperature
Tj
-40
–
150
°C
–
P_9.1.14
Storage Temperature
Tstg
-55
–
150
°C
–
P_9.1.15
ESD Resistivity at CANH, CANL,
SPLIT and WK versus GND
VESD
-8
–
8
kV
HBM2) (100 pF / 1.5 kΩ)
P_9.1.16
ESD Resistivity all other pins
VESD
-2
–
2
kV
HBM2) (100 pF / 1.5 kΩ)
P_9.1.17
Maximum Output Current INH
Temperatures
ESD Susceptibility
1) Not subject to production test, specified by design.
2) ESD susceptibility, HBM according to AEC-Q100-002D.
Note:
Data Sheet
Stresses above the ones listed here may cause permanent damage to the device. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
25
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
General Product Characteristics
1. Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
9.2
Functional Range
Table 5
Operating Range
Parameter
Symbol
Values
Unit Note or
Test Condition
Min. Typ. Max.
Number
VS(nom)
5.5
–
18
V
–
P_9.2.1
5.0
–
40
V
Parameter
Deviations
possible
P_9.2.2
Supply Voltages
Supply Voltage Range for
Normal Operation
Extended Supply Voltage Range for Operation VS(ext)
Transceiver Supply Voltage
VCC
4.75 –
5.25 V
–
P_9.2.3
Logic Supply Voltage
VIO
3.0
–
5.25 V
–
P_9.2.4
TJ
-40
–
150
1)
P_9.2.5
Thermal Parameters
Junction temperature
°C
1) Not subject to production test, specified by design
Note:
Within the functional range the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics
table.
9.3
Thermal Resistance
Table 6
Thermal Characteristics1)
Parameter
Symbol
Values
Unit Note or Test Condition
Number
K/W measured to pin 2
P_9.3.1
Min. Typ. Max.
Thermal Resistance
Junction to Soldering Point
RthJSP
Junction to Ambient
RthJA
–
–
–
25
130
–
K/W
2)
P_9.3.2
Thermal Shutdown Junction Temperature
Thermal shutdown temp.
TJSD
150
175
190
°C
–
P_9.3.3
Thermal shutdown hysteresis
∆T
–
10
–
K
–
P_9.3.4
1) Not subject to production test, specified by design
2) EIA/JESD 52_2, FR4, 80 × 80 × 1.5 mm; 35 µm Cu, 5 µm Sn; 300 mm2
Data Sheet
26
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
10
Electrical Characteristics
10.1
Functional Device Characteristics
Table 7
Electrical Characteristics
4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; 5.5 V < VS < 18 V; RL = 60 Ω; normal mode; -40°C < Tj < 150°C; all voltages
with respect to ground; positive current flowing into pin; unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
P_10.1.1
Min. Typ. Max.
Current Consumption
ICC+VIO
–
6
10
mA
Recessive state;
TxD = “high”
ICC+VIO
–
50
80
mA
Dominant state;
TxD = “low”
ICC+VIO
Current consumption in
Receive-Only mode on VCC and
VIO
–
6
10
mA
–
P_10.1.2
–
45
70
µA
VS = WK = 12 V
VCC = VIO = 5V
P_10.1.3
ICC+VIO
Current consumption in
Stand-By mode on VCC and VIO
–
2.5
10
µA
VS = VWK = 12 V
VCC = VIO = 5V
P_10.1.4
Current consumption in Sleep IVS
mode on VS
–
20
30
µA
VS = 12 V, Tj < 85°C,
VCC = VIO = 0 V
P_10.1.5
Current consumption in Sleep ICC+VIO
mode on VCC and VIO
–
2.5
10
µA
VS = 12 V, Tj < 85°C,
VCC = VµC = 5V
P_10.1.6
Current consumption in
Normal Operation mode on
VCC and VIO
Current consumption in
Stand-By mode on VS
IVS
Supply Resets
VCC under-voltage detection
VCC,UV
2
3
4
V
–
P_10.1.7
VIO under-voltage detection
VIO,UV
1.5
2.5
2.8
V
–
P_10.1.8
VS power ON detection level
VS,Pon
2
4
5
V
–
P_10.1.9
VS power OFF detection level
VS,Poff
2
3.5
5
V
–
P_10.1.10
“High” level output current
IRD,H
–
-4
-2
mA
VRD = 0.8 × VIO
P_10.1.11
“Low” level output current
IRD,L
2
4
–
mA
VRD = 0.2 × VIO
P_10.1.12
Receiver Output RxD
Data Sheet
27
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
Table 7
Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; 5.5 V < VS < 18 V; RL = 60 Ω; normal mode; -40°C < Tj < 150°C; all voltages
with respect to ground; positive current flowing into pin; unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min. Typ. Max.
Transmission Input TxD
“High” level input range
VTD,H
0.7 × –
VIO
VIO +
0.3 V
V
Recessive state
P_10.1.13
“Low” level input range
VTD,L
- 0.3
–
0.3
× VIO
V
Dominant state
P_10.1.14
“High” level input current
ITD
-5
0
5
µA
VTxD = VIO
P_10.1.15
TxD pull-up resistance
RTD
10
20
40
kΩ
–
P_10.1.16
Mode Control Inputs EN, NSTB
“High” level input range
VM,H
0.7 × –
VIO
VIO +
0.3 V
V
Recessive state
P_10.1.17
“Low” level input range
VM,L
- 0.3
–
0.3 ×
VIO
V
Dominant state
P_10.1.18
“Low” level input current
IMD
-5
0
5
µA
VEN and VNSTB = 0V
P_10.1.19
Pull-down resistance
RM
50
100
200
kΩ
–
P_10.1.20
“High” level output voltage
VNERR,H
0.8
–
× VIO
–
V
INERR = -100 µA
P_10.1.21
“Low” level output voltage
VNERR,L
–
0.2
× VIO
V
INERR = 1.25 mA
P_10.1.22
Split output voltage
VSPLIT
0.3
0.5
0.7
× VCC × VCC × VCC
V
Normal Operation mode;
-500 µA < ISPLIT < 500 µA
P_10.1.23
Split output voltage
no load
VSPLIT
0.45 0.5
0.55
× VCC × VCC × VCC
V
Normal Operation mode;
no load
P_10.1.24
Leakage current
ISPLIT
-5
0
5
µA
Sleep mode
VCC = VIO = 0 V
P_10.1.25
Output resistance
RSPLIT
–
600
–
Ω
RSPLIT =
(VSPLIT(500 µA) - VSPLIT(-500
µA)) / 1 mA
P_10.1.26
Diagnostic Output NERR
–
Termination Output SPLIT
Data Sheet
28
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
Table 7
Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; 5.5 V < VS < 18 V; RL = 60 Ω; normal mode; -40°C < Tj < 150°C; all voltages
with respect to ground; positive current flowing into pin; unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min. Typ. Max.
Wake Input WK
“High” Level voltage range at VWK,H
WK
VS 2V
–
VS +
3V
V
VEN = VNSTB = 0 V,
rising edge
P_10.1.27
“Low” Level voltage range at
WK
VWK,L
- 27
–
VS 4V
V
VEN = VNSTB = 0
V, falling edge
P_10.1.28
“High” level input current
IWKH
-10
-5
–
µA
VWK = Vs - 2 V
P_10.1.29
“Low” level current
IWKL
–
5
10
µA
VWK = Vs - 4 V
P_10.1.30
“High” level voltage drop
∆VH = VS - VINH
∆VH
–
0.4
0.8
V
IINH = -1 mA
P_10.1.31
–
0.8
1.6
–
1)
Leakage current
IINH,lk
–
–
5
µA
Sleep mode;
VINH = 0 V
P_10.1.32
CANL and CANH recessive
output voltage
VCANL/H
2.0
–
3.0
V
Normal Operation mode
no load
P_10.1.33
CANL and CANH recessive
output voltage
VCANL/H
-0.1
–
0.1
V
Sleep or Stand-By mode
no load
P_10.1.34
CANH to CANL recessive
output voltage difference
Vdiff
-500
–
50
mV
VTxD = VIO;
no load
P_10.1.35
CANL dominant output
voltage
VCANL
0.5
–
2.25
V
VTxD = 0 V;
–
50 Ω < RL < 65 Ω
P_10.1.36
CANH dominant output
voltage
VCANH
2.75
–
4.5
V
VTxD = 0 V;
50 Ω < RL < 65 Ω
P_10.1.37
1.5
–
3.0
V
VTxD = 0 V;
–
50 Ω< RL < 65 Ω
P_10.1.38
Inhibit Output INH
IINH = -5 mA
Bus Transmitter
CANH, CANL dominant output Vdiff
voltage difference
CANL short circuit current
ICANLsc
50
80
200
mA
VCANLshort = 18 V
P_10.1.39
CANH short circuit current
ICANHsc
-200
-80
-50
mA
VCANHshort = 0 V
P_10.1.40
Leakage current
ICANHL,lk
-5
0
5
µA
VS = VµC = VCC = 0 V;
0 V < VCANH,L < 5 V
P_10.1.41
Data Sheet
29
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
Table 7
Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; 5.5 V < VS < 18 V; RL = 60 Ω; normal mode; -40°C < Tj < 150°C; all voltages
with respect to ground; positive current flowing into pin; unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min. Typ. Max.
Bus Receiver
Differential receiver input
range - dominant
Vdiff,rdN
0.9
–
5.0
V
Normal Operation mode,
In respect to CMR
P_10.1.42
Differential receiver input
range - recessive
Vdiff,drN
-1.0
–
0.5
V
Normal Operation mode,
In respect to CMR
P_10.1.43
Differential receiver input
range - dominant
Vdiff,rdL
1.15
–
5.0
V
Sleep mode, Stand-By mode P_10.1.44
In respect to CMR
Differential receiver input
range - recessive
Vdiff,drL
-1.0
–
0.4
V
Sleep mode, Stand-By mode P_10.1.45
In respect to CMR
Common Mode Range
CMR
-12
–
12
V
VCC = 5 V
P_10.1.46
–
100
–
mV
–
P_10.1.47
Differential receiver hysteresis Vdiff,hys
CANH, CANL input resistance
Ri
10
20
30
kΩ
Recessive state
P_10.1.48
Differential input resistance
Rdiff
20
40
60
kΩ
Recessive state
P_10.1.49
Dynamic CAN-Transceiver Characteristics
td(L),TR
–
150
255
ns
CL = 100 pF;
VCC = VIO = 5 V; CRxD = 15 pF
P_10.1.50
Propagation delay
td(H),TR
TxD-to-RxD “high” (dominant
to recessive)
–
150
255
ns
CL = 100 pF;
VCC = VIO = 5 V; CRxD = 15 pF
P_10.1.51
Propagation delay
TxD-to-RxD “low” (recessive
to dominant)
Propagation delay
TxD”low” to bus dominant
td(L),T
–
50
120
ns
CL = 100 pF;
VCC = VIO = 5 V; CRxD = 15 pF
P_10.1.52
Propagation delay
TxD “high” to bus recessive
td(H),T
–
50
120
ns
CL = 100 pF;
VCC = VIO = 5 V; CRxD = 15 pF
P_10.1.53
Propagation delay
bus dominant to RxD “low”
td(L),R
–
100
135
ns
CL = 100 pF;
VCC = VIO = 5 V; CRxD = 15 pF
P_10.1.54
Propagation delay
bus recessive to RxD “high”
td(H),R
–
100
135
ns
CL = 100 pF;
VCC = VIO = 5 V; CRxD = 15 pF
P_10.1.55
Min. hold time go to sleep
command
thSLP
8
25
50
µs
–
P_10.1.56
Min. wake-up time on pin WK tWK(local) 5
10
20
µs
–
P_10.1.57
Min. dominant time for bus
wake-up
tWake
0.75
3
5
µs
–
P_10.1.58
TxD permanent dominant
disable time
tTxD
0.3
0.6
1.0
ms
–
P_10.1.59
Bus permanent time-out
tBus,t
0.3
0.6
1.0
ms
–
P_10.1.60
Data Sheet
30
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Electrical Characteristics
Table 7
Electrical Characteristics (cont’d)
4.75 V < VCC < 5.25 V; 3.0 V < VIO < 5.25 V; 5.5 V < VS < 18 V; RL = 60 Ω; normal mode; -40°C < Tj < 150°C; all voltages
with respect to ground; positive current flowing into pin; unless otherwise specified.
Parameter
Symbol
Values
Unit Note or Test Condition
Number
Min. Typ. Max.
VCC, VµC undervoltage filter
time
tUV(VIO)
tUV(VCC)
200
320
480
ms
–
P_10.1.61
Time for mode change
tMode
–
20
–
µs
1)
P_10.1.62
1) Not subject to production test, specified by design.
10.2
Diagrams
10
VS
NSTB
100 nF
EN
13
CL
CANH
TxD
RxD
RL
12
6
1
4
CRxD
CANL
VIO
9
14
WK
GND
VCC
5
3
100
nF
2
Figure 14
100
nF
= VCC
=
VIO
Test Circuit for Dynamic Characteristics
VTxD
VIO
GND
VDIFF
td(L),T
0.9 V
0.5 V
td(L),R
VRxD
VIO
t
td(H),T
t
td(H),R
td(L),TR
td(H),TR
0.8 x VIO
GND
0.2 x VIO
t
Figure 15
Data Sheet
Timing Diagrams for Dynamic Characteristics
31
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Application Information
11
Application Information
Note:
The following information is given as a hint for the implementation of the device only and shall not
be regarded as a description or warranty of a certain functionality, condition or quality of the device.
11.1
Application Example
4.7 nF 1)
60 Ω
VS
60 Ω
TLE6251-2G
10 kΩ
9
VBat
CAN
Bus
WK
EN
NSTB
NERR
51 µH
13
1)
12
11
10
CANH
RxD
CANL
TxD
SPLIT
VIO
6
14
8
4
Micro
Controller
E.g. XC22xx
1
5
100
nF
VS
100 7
INH
nF
GND
VCC
3
VQ1
INH
e.g. TLE 4476
(3.3/5 V) or
TLE 4471
TLE 4276
TLE 4271
100
nF
VI1
GND
100
nF
2
22 +
µF
100
nF
GND
VQ2
5V
+
22
µF
+
22
µF
ECU
TLE6251DS
51 µH
7
1)
6
5
CANH
STB
CANL
RxD
SPLIT
TxD
GND
VCC
8
Micro
Controller
E.g. XC22xx
4
1
3
100
nF
2
100
nF
GND
e. g. TLE 4270
60 Ω
60 Ω
4.7 nF 1)
VI
22 +
µF
100
nF
5V
VQ
GND
+
22 µF
ECU
1) Optional, according to the car manufacturer requirements
Figure 16
Data Sheet
Application Circuit Example
32
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Application Information
11.2
ESD Robustness according to IEC61000-4-2
Test for ESD robustness according to IEC61000-4-2 “Gun test” (150 pF, 330 Ω) have been performed. The
results and test conditions are available in a separate test report.
Table 8
ESD Robustness according to IEC61000-4-2
Performed Test
Result Unit Remarks
Electrostatic discharge voltage at pin VS, CANH, CANL and WK versus GND
≥9
Electrostatic discharge voltage at pin VS, CANH, CANL and WK versus GND
≤ -9
kV
1)
kV
1)
Positive pulse
Negative pulse
1) ESD susceptibility “ESD GUN” according to “Gift ICT Evaluation of CAN Transceiver “Section 4.3. (IEC 61000-4-2:
2001-12) -Tested by external test house (IBEE Zwickau, EMC Testreport Nr. 07a-04-09 referenced to the TLE6251-2G).
11.3
Voltage Drop over the INH Output
Voltage Drop on the INH output pin
1,00
Voltage Drop (V)
TJ = 150°C
TJ = 25°C
TJ = -40°C
0,00
0,00
1,00
2,00
3,00
4,00
5,00
INH Output Current (mA)
Figure 17
INH output voltage drop versus output current (typical values only!)
11.4
Mode Change to Sleep mode
Mode changes are applied either by a host command, an Wake-Up event or by an under-voltage event. To
trigger a mode change by a host command or in other words by a signal change on the digital input pins EN
and NSTB all power supplies, VS VIO and VCC need to be available.TLE6251-2G.
By setting the EN pin to “high” and the NSTB pin to “low”, the TLE6251-2G enters the Go-To-Sleep command
and after the time t = thSLP expires, the TLE6251-2G enters into the Sleep mode (see Chapter 5.5). For any mode
change, also for a mode change to Sleep mode the TLE6251-2G disregards the signal on the CAN bus.
Therefore the TLE6251-2G can enter Sleep mode and remain in Sleep mode even when there is a short circuit
on the CAN bus, for example CANH shorted to VS or VCC.
Data Sheet
33
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Application Information
dn order to recognize a remote Wake-Up, the TLE6251-2G requires a signal change from recessive to dominant
before the Wake-Up filter time starts (see Figure 6 and Figure 18).
EN
t
t = thSLP
NSTB
t
Normal
Operation mode
Go-To Sleep
command
Sleep mode
Stand-By mode
CANH
CANL
t = tWake
t = tWake
no Wake-Up
„Recessive“ to „Dominant“
change
Wake-Up
t
INH
t
RxD
t
Figure 18
Mode change to Sleep while the CANH bus is dominant
11.5
Further Application Information
•
Please contact us for information regarding the pin FMEA.
•
Existing Application Note
•
For further information you may contact http://www.infineon.com/automotive-transceiver
Data Sheet
34
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Package Outlines
12
Package Outlines
Figure 19
PG-DSO-14 (Plastic Dual Small Outline PG-DSO-14)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant
with government regulations the device is available as a green product. Green products are RoHS-Compliant
(i.e. Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
For further information on alternative packages, please visit our website:
http://www.infineon.com/packages.
Data Sheet
35
Dimensions in mm
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Revision History
13
Table 9
Revision History
Revision History
Revision
Date
Changes
1.24
2019-08-21
Added technical number Z8F50315754
1.23
2018-06-20
Update Data Sheet Rev.1.23 based on Data Sheet Rev. 1.22:
1.22
2017-04-11
•
Update package drawing
•
Update Layout style
Update Data Sheet Rev.1.22 based on Data Sheet Rev. 1.21:
•
1.21
2017-03-23
Update Data Sheet Rev.1.21 based on Data Sheet Rev. 1.2:
•
1.2
1.1
Data Sheet
2016-07-25
2011-05-23
Editorial changes
Typo corrected in Pin Assignment see Figure 2 from N.C. to SPLIT.
Update Data Sheet Rev.1.2 based on Data Sheet Rev. 1.1:
•
Data Sheet updated to new style template.
•
Added description for power-up behavior in Stand-by Mode in Chapter 5.3:
“After first power-up or after an undervoltage event on VS a wake-up is not
signaled on RxD and NERR pin”.
•
Added footnote in Table 3: “After first power-up or after an undervoltage
event on VS a wake-up is not signaled on RxD and NERR pin”.
Updated Data Sheet Rev. 1.0
•
Cover page, new Infineon logo.
•
All pages:
Spelling, grammar and format failure corrected.
•
Page 7, Figure 3: Updated.
•
Page 9, Chapter 5: Updated description.
•
Page 9, Figure 4: Updated.
•
Page 11, Chapter 5.3:
Timing Reference th(min) changed to thSLP.
•
Page 12, Chapter 5.4:
Timing Reference th(min) changed to thSLP.
•
Page 12, Chapter 5.4:
Timing Reference th(min) changed to thSLP.
•
Page 13, Chapter 5.6:
Added head line.
Timing Reference th(min) changed to thSLP.
•
Page 13, Figure 5: Updated.
•
Page 14, Figure 6: Updated.
•
Page 15, Figure 7: Updated.
•
Page 16, Chapter 6.3:
Text updated, from Sleep mode no mode change to the Go-To-Sleep
command possible.
36
Rev. 1.24
2019-08-21
TLE6251-2G
High Speed CAN Transceiver with Wake and Failure Detection
Revision History
Table 9
Revision
Revision History (cont’d)
Date
1.1
1.0
Data Sheet
2009-05-07
Changes
•
Page 16, Figure 8: Updated.
•
Page 18, Chapter 7.2.1: Updated description.
•
Page 18, Figure 10: Updated.
•
Page 20, Figure 11: Updated.
•
Page 20, Chapter 7.3.1: Updated description.
•
Page 21, Figure 12: Updated.
•
Page 22, Figure 13: Updated.
•
Page 25, table 5, pos. 9.2.1
Updated supply range, 5.5 V to 18 V
•
Page 25, table 5, pos. 9.2.2
Updated extended supply range, 5.0 V to 40 V
•
Page 26ff, table 7, headline:
Updated VS range 5.5 V to 18 V.
•
Page 30, Figure 15: Updated.
•
Page 34, Chapter 11.4: Added.
Initial Data Sheet Rev. 1.0
37
Rev. 1.24
2019-08-21
Trademarks
All referenced product or service names and trademarks are the property of their respective owners.
Edition 2019-08-21
Published by
Infineon Technologies AG
81726 Munich, Germany
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All Rights Reserved.
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