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SN74ALS640BDWR - Texas Instruments

Description: Octal Bus Transceivers

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SN74ALS640BDWR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW0020A
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SN74ALS640BDWR - Texas Instruments  - 3D model - Small Outline Packages - DW0020A
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SN74ALS640BDWR Details

  • Manufacturer Part Number:

    SN74ALS640BDWR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • 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:

    ALS

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    12.8 mm

  • Load Capacitance (CL):

    50 pF

  • Logic IC Type:

    BUS TRANSCEIVER

  • Max I(ol):

    0.024 A

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    8

  • Number of Functions:

    8

  • Number of Ports:

    2

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    70 °C

  • Output Characteristics:

    3-STATE

  • Output Polarity:

    INVERTED

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP20,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    55 mA

  • Prop. Delay@Nom-Sup:

    11 ns

  • Propagation Delay (tpd):

    10 ns

  • Qualification Status:

    Not Qualified

  • Schmitt Trigger:

    NO

  • Seated Height-Max:

    2.65 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    YES

  • Technology:

    TTL

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    7.5 mm

SN74ALS640BDWR Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the SN74ALS640BDWR is 100 MHz, but it can vary depending on the system design and capacitive load.
  • To ensure signal integrity, use a low-impedance PCB design, keep signal traces short, and use termination resistors to minimize reflections. Also, consider using a signal integrity analysis tool to simulate and optimize your design.
  • Yes, the SN74ALS640BDWR is compatible with 3.3V systems, but you need to ensure that the input voltage (VCC) is within the recommended range of 4.5V to 5.5V. You may also need to use level translators or voltage dividers to interface with 3.3V logic.
  • To avoid latch-up or damage, ensure that the power supply (VCC) is applied before the input signals. Also, consider using a power sequencing controller or a reset circuit to ensure proper power-up and power-down sequences.
  • Use a symmetrical PCB layout to minimize skew and ensure that the clock and data signals are routed close together. Keep the device away from noise sources, and use a solid ground plane to reduce electromagnetic interference (EMI).

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SN74ALS640BDWR 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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