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SN54LS640J - Texas Instruments

Description: Bus XCVR Single 8-CH 3-ST 20-Pin CDIP Tube

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SN54LS640J - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - j
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SN54LS640J Details

  • Manufacturer Part Number:

    SN54LS640J

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    20

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Additional Feature:

    WITH DIRECTION CONTROL

  • Control Type:

    COMMON CONTROL

  • Count Direction:

    BIDIRECTIONAL

  • Family:

    LS

  • JESD-30 Code:

    R-GDIP-T20

  • JESD-609 Code:

    e0

  • Length:

    24.195 mm

  • Load Capacitance (CL):

    45 pF

  • Logic IC Type:

    BUS TRANSCEIVER

  • Max I(ol):

    0.012 A

  • Number of Bits:

    8

  • Number of Functions:

    8

  • Number of Ports:

    2

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -55 °C

  • Output Characteristics:

    3-STATE

  • Output Polarity:

    INVERTED

  • Package Body Material:

    CERAMIC, GLASS-SEALED

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP20,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Packing Method:

    TUBE

  • Power Supply Current-Max (ICC):

    90 mA

  • Prop. Delay@Nom-Sup:

    15 ns

  • Propagation Delay (tpd):

    15 ns

  • Qualification Status:

    Not Qualified

  • Schmitt Trigger:

    NO

  • Seated Height-Max:

    5.08 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    NO

  • Technology:

    TTL

  • Temperature Grade:

    MILITARY

  • Terminal Finish:

    Tin/Lead (Sn/Pb)

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

SN54LS640J Frequently Asked Questions (FAQs)

  • The maximum clock frequency of the SN54LS640J is 25 MHz.
  • To ensure reliable operation in high-temperature environments, ensure that the device is operated within the recommended operating temperature range of 0°C to 70°C, and that the device is properly heat-sinked to prevent overheating.
  • The recommended power-on sequence for the SN54LS640J is to apply power to the VCC pin first, followed by the clock signal, and then the input signals.
  • To handle metastability issues in the SN54LS640J, ensure that the clock signal is clean and free of noise, and that the device is operated within the recommended clock frequency range. Additionally, consider using synchronizers or metastability-resistant design techniques to mitigate metastability issues.
  • The recommended layout and routing for the SN54LS640J involves keeping the clock signal traces short and shielded, and ensuring that the power and ground pins are properly decoupled. Additionally, consider using a ground plane and avoiding vias under the device to minimize noise and signal degradation.

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SN54LS640J Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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Part Image 8416101RA Texas Instruments

Bus Transceiver, LS Series, 8-Func, 8-Bit, Inverted Output, TTL, CDIP20

Part Image HD74LS640-1P Renesas Electronics Corporation

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Part Image SN74LS640NDS Motorola Semiconductor Products

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Part Image 74LS640N Signetics

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Part Image GD74LS640J Goldstar Electron Co Ltd

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For a full list of alternate parts for SN54LS640J, check out Findchips.com