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SN74ALS640B-1DW - Texas Instruments

Description: Texas Instruments SN74ALS640B-1DW, Bus Transceiver, 8-Bit Inverting TTL, 4.75 → 5.25 V, 20-Pin SOIC

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SN74ALS640B-1DW - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW (R-PDSO-G20)
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SN74ALS640B-1DW - Texas Instruments  - 3D model - Small Outline Packages - DW (R-PDSO-G20)
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SN74ALS640B-1DW Details

  • Manufacturer Part Number:

    SN74ALS640B-1DW

  • Brand Name:

    Texas Instruments

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • 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):

    0.048 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:

    TUBE

  • 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):

    5.25 V

  • Supply Voltage-Min (Vsup):

    4.75 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

SN74ALS640B-1DW Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the SN74ALS640B-1DW is 4.5V to 5.5V.
  • The SN74ALS640B-1DW has a maximum junction temperature of 150°C. Ensure good airflow, use a heat sink if necessary, and follow proper PCB design guidelines to minimize thermal resistance.
  • The maximum frequency of operation for the SN74ALS640B-1DW is 100 MHz.
  • Use proper PCB design techniques, such as impedance matching, signal termination, and shielding, to minimize signal reflections and noise. Also, ensure that the output load is within the recommended range.
  • The SN74ALS640B-1DW is a 5V device, but it can be used with 3.3V logic with proper level shifting or voltage translation. However, this may affect the device's performance and power consumption.

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SN74ALS640B-1DW 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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