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SNJ54HC541FK

SNJ54HC541FK

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

  • 描述:

    54HC541 OCTAL BUFFERS AND LINE D

  • 数据手册
  • 价格&库存
SNJ54HC541FK 数据手册
SN54HC541, SN74HC541 SCLS305E – JANUARY 1996 – REVISED MAY 2022 SNx4HC541 Octal Buffers and Line Drivers With 3-State Outputs 1 Features 3 Description • • These octal buffers and line drivers feature the performance of the SNx4HC541 devices and a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly facilitates printed circuit board layout. • • • • • Wide Operating Voltage Range of 2 V to 6 V High-Current 3-State Outputs Drive Bus Lines Directly or Up to 15 LSTTL Loads Low Power Consumption, 80-µA Maximum ICC Typical tpd = 10 ns ±6-mA Output Drive at 5 V Low Input Current of 1 µA Maximum Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs) 2 Applications • • • • • LEDs Servers PCs and Notebooks Wearable Health and Wellness Devices Electronic Points of Sale The 3-state outputs are controlled by a two-input NOR gate. If either output-enable (OE1 or OE2) input is high, all eight outputs are in the high-impedance state. The SNx4HC541 devices provide true data at the outputs. Device Information PART NUMBER PACKAGE (1) BODY SIZE (NOM) SN74HC541DW SOIC (20) 12.80 mm × 7.50 mm SN74HC541DB SSOP (20) 7.20 mm × 5.30 mm SN74HC541N PDIP (20) 24.33 mm × 6.35 mm SN74HC541NS SO (20) 12.60 mm × 5.30 mm SN74HC541PW TSSOP (20) 6.50 mm × 4.40 mm SN54HC541J CDIP (20) 24.20 mm × 6.92 mm SN54HC541FK LCCC (20) 8.89 mm × 8.89 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 1 OE1 OE2 A1 19 2 18 Y1 To Seven Other Channels Copyright © 2016, Texas Instruments Incorporated Functional Block Diagram An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 Table of Contents 1 Features............................................................................1 2 Applications..................................................................... 1 3 Description.......................................................................1 4 Revision History.............................................................. 2 5 Pin Configuration and Functions...................................3 Pin Functions.................................................................... 3 6 Specifications.................................................................. 4 6.1 Absolute Maximum Ratings........................................ 4 6.2 ESD Ratings............................................................... 4 6.3 Recommended Operating Conditions.........................4 6.4 Thermal Information....................................................5 6.5 Electrical Characteristics, TA = 25°C.......................... 5 6.6 Electrical Characteristics, SN54HC541...................... 5 6.7 Electrical Characteristics, SN74HC541...................... 6 6.8 Switching Characteristics, CL = 50 pF, TA = 25°C.......6 6.9 Switching Characteristics, CL = 50 pF, SN54HC541.................................................................. 7 6.10 Switching Characteristics, CL = 50 pF, SN74HC541.................................................................. 7 6.11 Switching Characteristics, CL = 150 pF, TA = 25°C.............................................................................. 7 6.12 Switching Characteristics, CL = 150 pF, SN54HC541.................................................................. 8 6.13 Switching Characteristics, CL = 150 pF, SN74HC541.................................................................. 8 6.14 Operating Characteristics......................................... 8 6.15 Typical Characteristics.............................................. 9 7 Parameter Measurement Information.......................... 10 8 Detailed Description...................................................... 11 8.1 Overview................................................................... 11 8.2 Functional Block Diagram......................................... 11 8.3 Feature Description...................................................11 8.4 Device Functional Modes..........................................11 9 Application and Implementation.................................. 12 9.1 Application Information............................................. 12 9.2 Typical Application.................................................... 12 10 Power Supply Recommendations..............................14 11 Layout........................................................................... 14 11.1 Layout Guidelines................................................... 14 11.2 Layout Example...................................................... 14 12 Device and Documentation Support..........................15 12.1 Related Links.......................................................... 15 12.2 Receiving Notification of Documentation Updates..15 12.3 Support Resources................................................. 15 12.4 Trademarks............................................................. 15 12.5 Electrostatic Discharge Caution..............................15 12.6 Glossary..................................................................15 13 Mechanical, Packaging, and Orderable Information.................................................................... 15 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision D (September 2016) to Revision E (May 2022) Page • Updated ESD ratings table to include modern TI terminology............................................................................4 • Junction-to-ambient thermal resistance values increased. DB was 90.2 is now 122.7, DW was 77.5 is now 109.1, N was 45.2 is now 84.6, NS was 72.8 is now 113.4, PW was 98.3 is now 131.8.................................... 5 Changes from Revision C (August 2003) to Revision D (September 2016) Page • Added Applications section, Thermal Information table, ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section............................................................................................................................................. 1 • Deleted Ordering Information table, see Mechanical, Packaging, and Orderable Information at the end of the datasheet............................................................................................................................................................ 1 • Changed RθJA for DB package from 70°C/W: to 90.2°C/W................................................................................ 5 • Changed RθJA for DW package from 58°C/W: to 77.5°C/W............................................................................... 5 • Changed RθJA for N package from 69°C/W: to 45.2°C/W...................................................................................5 • Changed RθJA for NS package from 60°C/W: to 72.8°C/W................................................................................ 5 • Changed RθJA for PW package from 83°C/W: to 98.3°C/W............................................................................... 5 2 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 5 Pin Configuration and Functions FK Package 20-Pin LCCC Top View DB, DW, N, NS, J, or PW Package 20-Pin SSOP, SOIC, PDIP, SO, CDIP, or TSSOP Top View Pin Functions PIN NO. (1) NAME I/O DESCRIPTION 1 OE1 I Output enable (active low) Both OE must be low to enable outputs 2 A1 I Channel 1 input 3 A2 I Channel 2 input 4 A3 I Channel 3 input 5 A4 I Channel 4 input 6 A5 I Channel 5 input 7 A6 I Channel 6 input 8 A7 I Channel 7 input Channel 8 input 9 A8 I 10 GND — Ground 11 Y8 O Channel 8 output 12 Y7 O Channel 7 output 13 Y6 O Channel 6 output 14 Y5 O Channel 5 output 15 Y4 O Channel 4 output 16 Y3 O Channel 3 output 17 Y2 O Channel 2 output 18 Y1 O Channel 1 output 19 OE2 I Output enable (active low) both OE must be low to enable outputs 20 VCC — (1) Power pin Signal Types: I = Input, O = Output, I/O = Input or Output. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 3 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 6 Specifications 6.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)(1) VCC Supply voltage current(2) MIN MAX –0.5 7 UNIT V IIK Input clamp VI < 0 or VI > VCC ±20 mA IOK Output clamp current(2) VO < 0 or VO > VCC ±20 mA IO Continuous output current VO = 0 to VCC ±35 mA ±70 mA 150 °C Continuous current through VCC or GND Tstg (1) (2) Storage temperature –65 Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 6.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000 Charged device model (CDM), per ANSI/ESDA/JEDEC JS-002(2) ±1000 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 6.3 Recommended Operating Conditions See note(1) VCC Supply voltage VCC = 2 V VIH High-level input voltage VCC = 4.5 V VCC = 6 V MIN NOM MAX 2 5 6 Low-level input voltage VI Input voltage VO Output voltage 3.15 0.5 VCC = 4.5 V 1.35 0 TA (1) 4 VCC V VCC V 1000 VCC = 4.5 V 500 VCC = 6 V Operating free-air temperature V 1.8 0 VCC = 2 V Input transition rise and fall time V 4.2 VCC = 6 V Δt/Δv V 1.5 VCC = 2 V VIL UNIT ns 400 SN54HC541 –55 125 SN74HC541 –40 85 °C All unused inputs of the device must be held at VCC or GND to ensure proper device operation. See Implications of Slow or Floating CMOS Inputs, SCBA004. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 6.4 Thermal Information SN74HC541 DB (SSOP) DW (SOIC) N (PDIP) NS (SO) PW (TSSOP) 20 PINS 20 PINS 20 PINS 20 PINS 20 PINS UNIT THERMAL METRIC RθJA Junction-to-ambient thermal (1) resistance 122.7 109.1 84.6 113.4 131.8 °C/W RθJC (top) Junction-to-case (top) thermal resistance 81.6 76 72.5 78.6 72.2 °C/W RθJB Junction-to-board thermal resistance 77.5 77.6 65.3 78.4 82.8 °C/W ΨJT Junction-to-top characterization parameter 46.1 51.5 55.3 47.1 21.5 °C/W ΨJB Junction-to-board characterization parameter 77.1 77.1 65.2 78.1 82.4 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance N/A N/A N/A N/A N/A °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. 6.5 Electrical Characteristics, TA = 25°C over operating free-air temperature range (unless otherwise noted) PARAMETER VOH TEST CONDITIONS MIN TYP MAX 2V 1.9 1.998 IOH = –20 µA 4.5 V 4.4 4.499 6V 5.9 5.999 IOH = –6 mA 4.5 V 3.98 4.3 6V 5.48 5.8 2V 0.002 0.1 4.5 V 0.001 0.1 6V 0.001 0.1 4.5 V 0.17 0.26 6V 0.15 0.26 VI = VIH or VIL IOH = –7.8 mA IOL = 20 µA VOL VCC VI = VIH or VIL IOL = 6 mA IOL = 7.8 mA UNIT V V II VI = VCC or 0 6V ±0.1 ±100 nA IOZ VO = VCC or 0 6V ±0.01 ±0.5 µA ICC VI = VCC or 0, IO = 0 6V Ci 2 V to 6 V 8 µA 3 10 pF TYP MAX 6.6 Electrical Characteristics, SN54HC541 over operating free-air temperature range (unless otherwise noted) PARAMETER VOH TEST CONDITIONS VCC MIN 2V 1.9 IOH = –20 µA 4.5 V 4.4 6V 5.9 IOH = –6 mA 4.5 V 3.7 6V 5.2 VI = VIH or VIL IOH = –7.8 mA UNIT V Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 5 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC IOL = 20 µA VOL VI = VIH or VIL IOL = 6 mA IOL = 7.8 mA MIN TYP MAX 2V 0.1 4.5 V 0.1 6V 0.1 4.5 V 0.4 UNIT V 6V 0.4 ±1000 nA II VI = VCC or 0 6V IOZ VO = VCC or 0 6V ±10 µA ICC VI = VCC or 0, IO = 0 6V 160 µA 2 V to 6 V 10 pF Ci 6.7 Electrical Characteristics, SN74HC541 over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS IOH = –20 µA VOH VI = VIH or VIL IOH = –6 mA IOH = –7.8 mA VOL VCC MIN 2V 1.9 4.5 V 4.4 6V 5.9 4.5 V 3.84 6V 5.34 TYP MAX V 2V 0.1 IOL = 20 µA 4.5 V 0.1 6V 0.1 IOL = 6 mA 4.5 V 0.33 VI = VIH or VIL IOL = 7.8 mA UNIT V 6V 0.33 II VI = VCC or 0 6V ±1000 nA IOZ VO = VCC or 0 6V ±5 µA ICC VI = VCC or 0, IO = 0 6V 80 µA 2 V to 6 V 10 pF Ci 6.8 Switching Characteristics, CL = 50 pF, TA = 25°C over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 7-1) PARAMETER tpd ten TO (OUTPUT) VCC A Y 6V 10 20 2V 80 150 4.5 V 17 30 6V 15 26 OE tdis OE tt 6 FROM (INPUT) Y Y Y MIN TYP MAX 2V 40 115 4.5 V 12 23 2V 40 150 4.5 V 18 30 6V 17 26 2V 28 60 4.5 V 8 12 6V 6 10 Submit Document Feedback UNIT ns ns ns ns Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 6.9 Switching Characteristics, CL = 50 pF, SN54HC541 over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 7-1) PARAMETER tpd ten FROM (INPUT) TO (OUTPUT) VCC 2V 171 A Y 4.5 V 34 OE tdis OE tt Y Y Y MIN TYP MAX 6V 29 2V 224 4.5 V 45 6V 38 2V 224 4.5 V 45 6V 38 2V 90 4.5 V 18 6V 15 UNIT ns ns ns ns 6.10 Switching Characteristics, CL = 50 pF, SN74HC541 over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 7-1) PARAMETER tpd FROM (INPUT) A ten OE tdis OE tt TO (OUTPUT) Y Y Y Y VCC MIN TYP MAX 2V 144 4.5 V 29 6V 25 2V 188 4.5 V 38 6V 32 2V 188 4.5 V 38 6V 32 2V 75 4.5 V 15 6V 13 UNIT ns ns ns ns 6.11 Switching Characteristics, CL = 150 pF, TA = 25°C over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 7-1) PARAMETER tpd ten FROM (INPUT) TO (OUTPUT) VCC A Y OE tt Y Y MIN TYP MAX 2V 65 165 4.5 V 16 33 6V 14 28 2V 100 200 4.5 V 20 40 6V 17 34 2V 45 210 4.5 V 17 42 6V 13 36 UNIT ns ns ns Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 7 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 6.12 Switching Characteristics, CL = 150 pF, SN54HC541 over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 7-1) PARAMETER tpd ten FROM (INPUT) TO (OUTPUT) VCC 2V 246 A Y 4.5 V 49 OE Y tt Y MIN TYP MAX 6V 42 2V 298 4.5 V 60 6V 51 2V 315 4.5 V 63 6V 53 UNIT ns ns ns 6.13 Switching Characteristics, CL = 150 pF, SN74HC541 over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 7-1) PARAMETER tpd ten FROM (INPUT) TO (OUTPUT) VCC 2V 206 A Y 4.5 V 41 OE Y tt Y MIN TYP MAX 6V 35 2V 250 4.5 V 50 6V 43 2V 265 4.5 V 53 6V 45 UNIT ns ns ns 6.14 Operating Characteristics TA = 25°C PARAMETER Cpd 8 TEST CONDITIONS TYP UNIT No load 35 pF Power dissipation capacitance per buffer/driver Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 6.15 Typical Characteristics 100 80 tpd ten tdis tt 70 80 70 50 Time (ns) Time (ns) 60 tpd ten tt 90 40 30 60 50 40 20 30 10 20 10 0 2 2.5 3 3.5 4 4.5 Vcc (Volts) 5 5.5 6 2 2.5 3 D001 Figure 6-1. Typical Delay vs. VCC for CL = 50 pF 3.5 4 4.5 Vcc (Volts) 5 5.5 6 D001 Figure 6-2. Typical Delay vs. VCC for CL = 150 pF Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 9 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 7 Parameter Measurement Information VCC PARAMETER From Output Under Test tPZH S1 Test Point 1 kΩ t en RL CL (see Note A) RL tPZL tPHZ t dis S2 tPLZ t pd or t t 1 kΩ –– LOAD CIRCUIT CL S1 S2 50 pF or 150 pF Open Closed Closed Open Open Closed Closed Open Open Open 50 pF 50 pF or 150 pF VCC Input 50% 50% 0V tPLH In-Phase Output 50% 10% tPHL 90% VOH 50% 10% V OL tf 90% tr tPHL Out-of-Phase Output 90% tPLH 50% 10% 50% 10% 90% VOH VOL tf tr VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES Output Control (Low-Level Enabling) VCC 50% 50% 0V tPZL tPLZ Output Waveform 1 (See Note B) 10% tPZH Input 50% 10% 90% 90% tr 50% 10% 0 V tPHZ Output Waveform 2 (See Note B) 50% 90% VOH ≈0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS D. E. CL includes probe and test-fixture capacitance. 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. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns. The outputs are measured one at a time with one input transition per measurement. tPLZ and tPHZ are the same as tdis. F. G. tPZL and tPZH are the same as ten. tPLH and tPHL are the same as tpd. C. VOL tf VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES A. B. VCC ≈VCC ≈VCC 50% Figure 7-1. Load Circuit and Voltage Waveforms 10 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 8 Detailed Description 8.1 Overview The SN74HC541 device has 8 inputs and outputs where data from the A inputs go to the Y outputs. The output enables of the device control whether the information from the A inputs go to the Y outputs. These enable pins cause the device to go into high Z if either OE1 or OE2 are high. The OEs should be tied to VCC through a pull up resistor to ensure the high impedance state during power up or power down; the minimum value of the resistor is determined by the current sinking capability of the driver. 8.2 Functional Block Diagram 1 OE1 OE2 A1 19 2 18 Y1 To Seven Other Channels Copyright © 2016, Texas Instruments Incorporated Figure 8-1. Logic Diagram (Positive Logic) 8.3 Feature Description The SNx4HC541 has a wide operating voltage range of 2 V to 6 V. The device has multiple enable pins, and the device pinout enables simple board layout with outputs across from inputs. 8.4 Device Functional Modes Table 8-1 lists the functional modes of the SNx4HC541. Table 8-1. Function Table (Each Buffer/Driver) INPUTS A OUTPUT Y OE1 OE2 L L L L L L H H H X X Hi-Z X H X Hi-Z Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 11 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 9 Application and Implementation Note Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes, as well as validating and testing their design implementation to confirm system functionality. 9.1 Application Information SN74HC541 is a wide range CMOS device that can be used over large voltage ranges. The device can be used anywhere from 2 to 6 Volts. The device can drive up to 6 mA of current at 5 Volts. This makes it perfect for driving bus lines directly or up to 15 LSTTL Loads. It can be used to drive anything from micro controllers and system logic devices to LEDs. 9.2 Typical Application OE1 VCC OE2 A1 Microcontroller or System Logic A8 Y1 Y8 Microcontroller System Logic LEDs GND Copyright © 2016, Texas Instruments Incorporated Figure 9-1. Typical Application Diagram 9.2.1 Design Requirements This device uses CMOS technology and has a wide voltage range. Take care to avoid pulling too much current from the outputs as to not exceed 6 mA. Also, take care to not go over VCC voltage to avoid damage to the device. 9.2.2 Detailed Design Procedure 1. Recommended Input Conditions • Rise time and fall time specs: See (Δt/ΔV) in the Section 6.3 table. • Specified high and low levels: See (VIH and VIL) in the Section 6.3 table. • Inputs should not be pulled above VCC. 2. Recommended Output Conditions • Load currents should not exceed 6 mA for the part • Outputs should not be pulled above VCC. 12 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 9.2.3 Application Curve 1000 950 Input Transition Time (ns) 900 850 800 750 700 650 600 550 500 450 400 2 2.5 3 3.5 4 4.5 Vcc (Volts) 5 5.5 6 D001 Figure 9-2. Input Transition Time vs. VCC Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 13 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 10 Power Supply Recommendations The power supply can be any voltage between the MIN and MAX supply voltage rating located in the Section 6.3 table. Each VCC pin should have a good bypass capacitor to prevent power disturbance. For devices with a single supply, 0.1-μF is recommended; if there are multiple VCC pins, then 0.01-μF or 0.022-μF is recommended for each power pin. It is acceptable to parallel multiple bypass caps to reject different frequencies of noise. A 0.1-μF and a 1-μF are commonly used in parallel. The bypass capacitor should be installed as close to the power pin as possible for best results. 11 Layout 11.1 Layout Guidelines When using multiple bit logic devices inputs should never float. In many cases, functions or parts of functions of digital logic devices are unused, for example, when only two inputs of a triple-input AND gate are used or only 3 of the 4 buffer gates are used. Such input pins should not be left unconnected because the undefined voltages at the outside connections result in undefined operational states. The Section 6.3 section specifies the rules that must be observed under all circumstances. All unused inputs of digital logic devices must be connected to a high or low bias to prevent them from floating. The logic level that should be applied to any particular unused input depends on the function of the device. Generally they will be tied to GND or VCC whichever makes more sense or is more convenient. It is generally acceptable to float outputs, unless the part is a transceiver. If the transceiver has an output enable pin, it disables the output section of the part when asserted. This does not disable the input section of the I/Os, so they cannot float when disabled. 11.2 Layout Example Vcc Unused Input Input Output Unused Input Output Input Figure 11-1. Layout Diagram 14 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 SN54HC541, SN74HC541 www.ti.com SCLS305E – JANUARY 1996 – REVISED MAY 2022 12 Device and Documentation Support 12.1 Related Links The table below lists quick access links. Categories include technical documents, support and community resources, tools and software, and quick access to sample or buy. Table 12-1. Related Links PARTS PRODUCT FOLDER SAMPLE & BUY TECHNICAL DOCUMENTS TOOLS & SOFTWARE SUPPORT & COMMUNITY SN54HC541 Click here Click here Click here Click here Click here SN74HC541 Click here Click here Click here Click here Click here 12.2 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 12.3 Support Resources TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight from the experts. Search existing answers or ask your own question to get the quick design help you need. Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. 12.4 Trademarks TI E2E™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 12.5 Electrostatic Discharge Caution This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. 12.6 Glossary TI Glossary This glossary lists and explains terms, acronyms, and definitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: SN54HC541 SN74HC541 15 PACKAGE OPTION ADDENDUM www.ti.com 18-Nov-2023 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) JM38510/65711BRA ACTIVE CDIP J 20 20 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 JM38510/ 65711BRA Samples M38510/65711BRA ACTIVE CDIP J 20 20 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 JM38510/ 65711BRA Samples SN54HC541J ACTIVE CDIP J 20 20 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 SN54HC541J Samples SN74HC541DBR ACTIVE SSOP DB 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HC541 Samples SN74HC541DWR ACTIVE SOIC DW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HC541 Samples SN74HC541N ACTIVE PDIP N 20 20 RoHS & Green NIPDAU N / A for Pkg Type -40 to 85 SN74HC541N Samples SN74HC541NE4 ACTIVE PDIP N 20 20 RoHS & Green NIPDAU N / A for Pkg Type -40 to 85 SN74HC541N Samples SN74HC541NSR ACTIVE SO NS 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HC541 Samples SN74HC541PWR ACTIVE TSSOP PW 20 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 HC541 Samples SNJ54HC541FK ACTIVE LCCC FK 20 55 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 SNJ54HC 541FK Samples SNJ54HC541J ACTIVE CDIP J 20 20 Non-RoHS & Green SNPB N / A for Pkg Type -55 to 125 SNJ54HC541J Samples (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) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
SNJ54HC541FK 价格&库存

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SNJ54HC541FK
    •  国内价格
    • 1000+249.37000

    库存:0