SN74ALVCH32973
16-BIT BUS TRANSCEIVER AND TRANSPARENT D-TYPE LATCH
WITH EIGHT INDEPENDENT BUFFERS
www.ti.com
SCES436C – APRIL 2003 – REVISED SEPTEMBER 2004
•
FEATURES
•
•
Member of the Texas Instruments Widebus+™
Family
Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors
•
Latch-Up Performance Exceeds 250 mA Per
JESD 17
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
DESCRIPTION/ORDERING INFORMATION
This device contains eight independent noninverting buffers and a 16-bit noninverting bus transceiver and D-type
latch designed for 1.65-V to 3.6-V VCC operation.
The SN74ALVCH32973 is particularly suitable for demultiplexing an address/data bus into a dedicated address
bus and dedicated data bus. The device is used where there is asynchronous bidirectional communication
between the A and B data bus, and the address signals are latched and buffered on the Q bus. The
control-function implementation minimizes external timing requirements.
This device can be used as one 8-bit buffer, two 8-bit transceivers, and two 8-bit latches or one 8-bit buffer, one
16-bit transceiver, and one 16-bit latch. It allows data transmission from the A bus to the B bus or from the B bus
to the A bus, depending on the logic level at the direction-control (DIR) input. The transceiver output-enable
(TOE) input can be used to disable the transceivers so that the A and B buses effectively are isolated.
When the latch-enable (LE) input is high, the Q outputs follow the data (A) inputs. When LE is taken low, the Q
outputs are latched at the levels set up at the A inputs. The latch output-enable (LOE) input can be used to place
the nine Q outputs in either a normal logic state (high or low logic level) or the high-impedance state. In the
high-impedance state, the Q outputs neither drive nor load the bus lines significantly. LOE does not affect
internal operations of the latch. Old data can be retained or new data can be entered while the Q outputs are in
the high-impedance state.
To ensure the high-impedance state during power up or power down, LOE and TOE should be tied to VCC
through pullup resistors; the minimum values of the resistors are determined by the current-sinking capability of
the drivers.
The eight independent noninverting buffers perform the Boolean function Y = D and are independent of the state
of DIR, TOE, LE, and LOE.
The A and B I/Os and D inputs have bus-hold circuitry. Active bus-hold circuitry holds unused or undriven data
inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
ORDERING INFORMATION
PACKAGE (1)
TA
-40°C to 85°C
(1)
LFBGA - GKE
LFBGA - ZKE (Pb-free)
Tape and reel
ORDERABLE PART NUMBER
SN74ALVCH32973KR
74ALVCH32973ZKER
TOP-SIDE MARKING
ACH973
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Widebus+ is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2004, Texas Instruments Incorporated
SN74ALVCH32973
16-BIT BUS TRANSCEIVER AND TRANSPARENT D-TYPE LATCH
WITH EIGHT INDEPENDENT BUFFERS
www.ti.com
SCES436C – APRIL 2003 – REVISED SEPTEMBER 2004
GKE OR ZKE PACKAGE
(TOP VIEW)
1
2
3
4
5
rt
rt
rt
6
TERMINAL ASSIGNMENTS
1
2
3
4
5
6
A
1A1
D1
1TOE
1DIR
1B1
1Q1
B
1A2
Y1
GND
GND
1B2
1Q2
C
1A3
D2
VCC
VCC
1B3
1Q3
D
1A4
Y2
GND
GND
1B4
1Q4
E
E
1A5
D3
GND
GND
1B5
1Q5
F
F
1A6
Y3
VCC
VCC
1B6
1Q6
G
G
1A7
D4
GND
GND
1B7
1Q7
H
H
1A8
Y4
1LE
1LOE
1B8
1Q8
J
J
2A1
D5
2TOE
2DIR
2B1
2Q1
K
K
2A2
Y5
GND
GND
2B2
2Q2
L
L
2A3
D6
VCC
VCC
2B3
2Q3
M
2A4
Y6
GND
GND
2B4
2Q4
N
2A5
D7
GND
GND
2B5
2Q5
P
2A6
Y7
VCC
VCC
2B6
2Q6
R
2A7
D8
GND
GND
2B7
2Q7
T
2A8
Y8
2LE
2LOE
2B8
2Q8
A
B
C
D
M
N
P
R
T
FUNCTION TABLES
INPUTS
TOE
OPERATION
DIR
L
L
B data to A bus
L
H
A data to B bus
H
X
A bus and B bus isolation
INPUTS
2
LOE
LE
A
OUTPUT
Q
L
H
H
H
L
H
L
L
L
L
X
Q0
H
X
X
Z
INPUT
D
OUTPUT
Y
L
L
H
H
SN74ALVCH32973
16-BIT BUS TRANSCEIVER AND TRANSPARENT D-TYPE LATCH
WITH EIGHT INDEPENDENT BUFFERS
www.ti.com
SCES436C – APRIL 2003 – REVISED SEPTEMBER 2004
LOGIC DIAGRAM (POSITIVE LOGIC)
1DIR
A4
A3
1LOE
1LE
1TOE
H4
H3
One of Eight Channels
C1
A6
1Q1
1D
1A1
A1
A5
1B1
To Seven Other Channels
3
SN74ALVCH32973
16-BIT BUS TRANSCEIVER AND TRANSPARENT D-TYPE LATCH
WITH EIGHT INDEPENDENT BUFFERS
www.ti.com
SCES436C – APRIL 2003 – REVISED SEPTEMBER 2004
LOGIC DIAGRAM (POSITIVE LOGIC)
2DIR J4
J3
2LOE
2LE
2TOE
T4
T3
One of Eight Channels
C1
J6
2Q1
1D
2A1
J1
J5
To Seven Other Channels
One of Eight Channels
D1
4
A2
B2
Y1
2B1
www.ti.com
SN74ALVCH32973
16-BIT BUS TRANSCEIVER AND TRANSPARENT D-TYPE LATCH
WITH EIGHT INDEPENDENT BUFFERS
SCES436C – APRIL 2003 – REVISED SEPTEMBER 2004
ABSOLUTE MAXIMUM RATINGS (1)
over operating free-air temperature range (unless otherwise noted)
VCC
Supply voltage range
MIN
MAX
-0.5
4.6
Except I/O and D input ports (2)
-0.5
4.6
I/O and D input ports (2) (3)
-0.5
VCC + 0.5
-0.5
VCC + 0.5
UNIT
V
VI
Input voltage range
VO
Output voltage range (2) (3)
IIK
Input clamp current
VI < 0
-50
mA
IOK
Output clamp current
VO < 0
-50
mA
IO
Continuous output current
±50
mA
±100
Continuous current through each VCC or GND
θJA
Package thermal impedance (4)
Tstg
Storage temperature range
(1)
(2)
(3)
(4)
GKE/ZKE package
-65
V
V
mA
40
°C/W
150
°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
This value is limited to 4.6 V maximum.
The package thermal impedance is calculated in accordance with JESD 51-7.
RECOMMENDED OPERATING CONDITIONS (1)
VCC
Supply voltage
VCC = 1.65 V to 1.95 V
VIH
High-level input voltage
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
MIN
MAX
1.65
3.6
Low-level input voltage
V
0.65 × VCC
1.7
V
2
0.35 × VCC
VCC = 1.65 V to 1.95 V
VIL
UNIT
VCC = 2.3 V to 2.7 V
0.7
VCC = 3 V to 3.6 V
0.8
V
VI
Input voltage
0
VCC
V
VO
Output voltage
0
VCC
V
IOH
High-level output current
IOL
Low-level output current
∆t/∆v
Input transition rise or fall rate
TA
Operating free-air temperature
(1)
VCC = 1.65 V
-4
VCC = 2.3 V
-12
VCC = 2.7 V
-12
VCC = 3 V
-24
VCC = 1.65 V
4
VCC = 2.3 V
12
VCC = 2.7 V
12
VCC = 3 V
24
-40
mA
mA
10
ns/V
85
°C
All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
5
SN74ALVCH32973
16-BIT BUS TRANSCEIVER AND TRANSPARENT D-TYPE LATCH
WITH EIGHT INDEPENDENT BUFFERS
www.ti.com
SCES436C – APRIL 2003 – REVISED SEPTEMBER 2004
ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
IOH = -100 µA
1.65 V to 3.6 V
IOH = -6 mA
2.3 V
2
2.3 V
1.7
2.7 V
2.2
3V
2.4
IOH = -24 mA
3V
2
IOL = 100 µA
IBHH (3)
0.2
1.65 V
0.45
IOL = 6 mA
2.3 V
0.4
2.3 V
0.7
IBHHO
(5)
1.65 V
25
2.3 V
45
VI = 0.8 V
3V
75
VI = 1.07 V
1.65 V
-25
VI = 1.7 V
2.3 V
-45
3V
-75
1.95 V
200
2.7 V
300
3.6 V
500
1.95 V
-200
2.7 V
-300
3.6 V
-500
VI = 0 to VCC
VI = 0 to VCC
VI = VCC or GND,
IO = 0
∆ICC
One input at VCC - 0.6 V,
Other inputs at VCC or GND
Cio
Co
(1)
(2)
(3)
(4)
(5)
(6)
6
A ports
B ports
Q
±5
VI = 0.7 V
ICC
D
0.55
VI = 0.57 V
VO = VCC or GND
Ci
0.4
3V
3.6 V
IOZ (6)
Control inputs
2.7 V
VI = VCC or GND
VI = 2 V
IBHLO (4)
V
1.65 V to 3.6 V
IOL = 24 mA
UNIT
1.2
IOL = 4 mA
IOL = 12 mA
IBHL (2)
MAX
VCC - 0.2
1.65 V
IOH = -12 mA
II
MIN TYP (1)
IOH = -4 mA
VOH
VOL
VCC
V
µA
µA
µA
µA
µA
±10
µA
3.6 V
60
µA
3 V to 3.6 V
750
µA
3.6 V
VI = VCC or GND
3.3 V
VO = VCC or GND
3.3 V
VO = VCC or GND
3.3 V
3
4
4.5
4.5
3
pF
pF
pF
All typical values are at VCC = 3.3 V, TA = 25°C.
The bus-hold circuit can sink at least the minimum low sustaining current at VIL max. IBHL should be measured after lowering VIN to GND
and then raising it to VIL max.
The bus-hold circuit can source at least the minimum high sustaining current at VIH min. IBHH should be measured after raising VIN
to VCC and then lowering it to VIH min.
An external driver must source at least IBHLO to switch this node from low to high.
An external driver must sink at least IBHHO to switch this node from high to low.
For I/O ports, the parameter IOZ includes the input leakage current.
SN74ALVCH32973
16-BIT BUS TRANSCEIVER AND TRANSPARENT D-TYPE LATCH
WITH EIGHT INDEPENDENT BUFFERS
www.ti.com
SCES436C – APRIL 2003 – REVISED SEPTEMBER 2004
TIMING REQUIREMENTS
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
VCC = 1.8 V
MIN
MAX
VCC = 2.5 V
± 0.2 V
MIN
MAX
VCC = 3.3 V
± 0.3 V
MIN
UNIT
MAX
tw
Pulse duration, LE high
2
2
2
ns
tsu
Setup time, data before LE↓
0.9
0.9
0.9
ns
th
Hold time, data after LE↓
0.9
0.9
0.9
ns
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1)
PARAMETER
tpd
ten
VCC = 3.3 V
± 0.3 V
TO
(OUTPUT)
VCC = 1.8 V
TYP
MIN
MAX
MIN
MAX
D
Y
2.2
0.5
3.2
0.5
3
2.2
0.5
3.2
0.5
3
2.8
0.5
3.3
0.5
3
A
LE
Q
UNIT
A or B
B or A
2.2
0.5
3.2
0.5
3
LOE
Q
2.9
0.7
4.9
0.7
4.7
3
0.7
4.6
0.7
4.4
3.4
0.7
4.9
0.7
4.7
2.8
0.5
4.3
0.5
4.1
3.2
0.5
4.3
0.5
4.1
3.4
0.5
4.9
0.5
4.7
TOE
DIR
LOE
tdis
VCC = 2.5 V
± 0.2 V
FROM
(INPUT)
TOE
DIR
A or B
Q
A or B
ns
ns
ns
7
SN74ALVCH32973
16-BIT BUS TRANSCEIVER AND TRANSPARENT D-TYPE LATCH
WITH EIGHT INDEPENDENT BUFFERS
www.ti.com
SCES436C – APRIL 2003 – REVISED SEPTEMBER 2004
OPERATING CHARACTERISTICS (1)
TA = 25°C
PARAMETER
Cpd (2)
(each output)
Cpd
(Z)
Cpd (3)
(each LE)
(1)
(2)
(3)
8
Power dissipation
capacitance
VCC = 1.8 V
VCC = 2.5 V
VCC = 3.3 V
TYP
TYP
TYP
UNIT
A outputs enabled,
Q outputs disabled,
one A output switching
One fA = 10 MHz,
One fB = 10 MHz,
TOE = GND,
LOE = VCC,
DIR = GND,
CL = 0 pF
12
14
19
B outputs enabled,
Q outputs disabled,
one B output switching
One fA = 10 MHz,
One fB = 10 MHz,
TOE = GND,
LOE = VCC,
DIR = GND,
CL = 0 pF
12
14
21
Q outputs enabled,
A and B I/Os isolated,
one Q output switching
One fA = 10 MHz,
One fLE = 20 MHz,
One fQ = 10 MHz,
TOE = VCC,
LOE = GND,
CL = 0 pF
11
13
19
One Y output switching,
A and B I/Os isolated,
Q outputs disabled
One fD = 10 MHz,
One fY = 10 MHz,
TOE = VCC,
LOE = VCC,
CL = 0 pF
7
8
12
A and B I/Os isolated,
Q outputs disabled,
one LE and one A data
input switching
One fA = 10 MHz,
One fLE = 20 MHz,
fQ not switching,
TOE = VCC,
LOE = VCC,
CL = 0 pF
4
5
11
pF
A and B I/Os isolated,
Q outputs disabled,
one LE input switching
fA not switching,
One fLE = 20 MHz,
fQ not switching,
TOE = VCC,
LOE = VCC,
CL = 0 pF
6
7
9
pF
Power dissipation
capacitance
Power dissipation
capacitance
TEST
CONDITIONS
pF
Total device Cpd for multiple (m) outputs switching and (n) LE inputs switching = [m * Cpd (each output)] + [n * Cpd (each LE)]
Cpd (each output) is the Cpd for each data bit (input and output circuitry) when it operates at 10 MHz (Note: The LE is operating at
20 MHz in this test, but its ICC component has been subtracted).
Cpd (each LE) is the Cpd for the clock circuitry only when it operates at 20 MHz.
SN74ALVCH32973
16-BIT BUS TRANSCEIVER AND TRANSPARENT D-TYPE LATCH
WITH EIGHT INDEPENDENT BUFFERS
www.ti.com
SCES436C – APRIL 2003 – REVISED SEPTEMBER 2004
PARAMETER MEASUREMENT INFORMATION
VLOAD
S1
RL
From Output
Under Test
Open
TEST
tpd
tPLZ/tPZL
tPHZ/tPZH
GND
CL
(see Note A)
RL
S1
Open
VLOAD
GND
LOAD CIRCUIT
INPUT
VCC
1.8 V
2.5 V ± 0.2 V
3.3 V ± 0.3 V
VI
tr/tf
VCC
VCC
2.7 V
≤2 ns
≤2 ns
≤2.5 ns
VM
VLOAD
CL
RL
V∆
VCC/2
VCC/2
1.5 V
2 × VCC
2 × VCC
6V
30 pF
30 pF
50 pF
1 kΩ
500 Ω
500 Ω
0.15 V
0.15 V
0.3 V
tw
VI
Timing
Input
VM
VM
VM
0V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VM
VM
0V
tPLH
Output
Control
(low-level
enabling)
tPLZ
VLOAD/2
VM
tPZH
VOH
VM
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VM
0V
Output
Waveform 1
S1 at VLOAD
(see Note B)
tPHL
VM
VI
VM
tPZL
VI
Input
VOLTAGE WAVEFORMS
PULSE DURATION
th
VI
Data
Input
VM
0V
0V
tsu
Output
VI
VM
Input
Output
Waveform 2
S1 at GND
(see Note B)
VOL + V∆
VOL
tPHZ
VOH
VM
VOH − V∆
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω.
D. The outputs are measured one at a time, with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
9
PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
Lead/Ball Finish
(2)
MSL Peak Temp
Op Temp (°C)
Top-Side Markings
(3)
(4)
74ALVCH32973ZKER
ACTIVE
LFBGA
ZKE
96
1000
Green (RoHS
& no Sb/Br)
SNAGCU
Level-3-260C-168 HR
-40 to 85
ACH973
SN74ALVCH32973KR
ACTIVE
LFBGA
GKE
96
1000
TBD
SNPB
Level-2-235C-1 YEAR
-40 to 85
ACH973
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a
continuation of the previous line and the two combined represent the entire Top-Side Marking for that device.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
Samples
PACKAGE MATERIALS INFORMATION
www.ti.com
18-Nov-2013
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
B0
(mm)
K0
(mm)
P1
(mm)
W
Pin1
(mm) Quadrant
74ALVCH32973ZKER
LFBGA
ZKE
96
1000
330.0
24.4
5.7
13.7
2.0
8.0
24.0
Q1
SN74ALVCH32973KR
LFBGA
GKE
96
1000
330.0
24.4
5.7
13.7
2.0
8.0
24.0
Q1
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
18-Nov-2013
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
74ALVCH32973ZKER
SN74ALVCH32973KR
LFBGA
ZKE
96
1000
336.6
336.6
41.3
LFBGA
GKE
96
1000
336.6
336.6
41.3
Pack Materials-Page 2
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