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SN74ALS646ADW - Texas Instruments

Description: Octal Registered Bus Transceivers with 3-State Outputs

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SN74ALS646ADW - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW (R-PDSO-G24)
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SN74ALS646ADW - Texas Instruments  - 3D model - Small Outline Packages - DW (R-PDSO-G24)
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SN74ALS646ADW Details

  • Manufacturer Part Number:

    SN74ALS646ADW

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    24

  • Country Of Origin:

    Taiwan

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Additional Feature:

    DIRECTION CONTROL; SELECT INPUT FOR MULTIPLEXED TRANSMISSION OF REGISTERED OR REAL TIME DATA

  • Control Type:

    INDEPENDENT CONTROL

  • Count Direction:

    BIDIRECTIONAL

  • Family:

    ALS

  • JESD-30 Code:

    R-PDSO-G24

  • JESD-609 Code:

    e4

  • Length:

    15.4 mm

  • Load Capacitance (CL):

    50 pF

  • Logic IC Type:

    REGISTERED BUS TRANSCEIVER

  • Max I(ol):

    0.024 A

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    8

  • Number of Functions:

    32

  • Number of Ports:

    2

  • Number of Terminals:

    24

  • Operating Temperature-Max:

    70 °C

  • Output Characteristics:

    3-STATE

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP24,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TUBE

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    88 mA

  • Prop. Delay@Nom-Sup:

    20 ns

  • Propagation Delay (tpd):

    17 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

  • Trigger Type:

    POSITIVE EDGE

  • Width:

    7.5 mm

SN74ALS646ADW Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the SN74ALS646ADW is 100 MHz, but it can vary depending on the specific application and operating conditions.
  • The SN74ALS646ADW has a maximum junction temperature of 150°C. To handle thermal dissipation, ensure good airflow around the device, use a heat sink if necessary, and follow proper PCB design and layout guidelines.
  • The recommended power-on sequence for the SN74ALS646ADW is to apply VCC first, followed by the input signals. This helps prevent latch-up and ensures proper device operation.
  • The SN74ALS646ADW is a 5V device, but it can be used in a 3.3V system with some limitations. The output voltage will be reduced, and the device may not meet its specified timing parameters. Consult the datasheet and application notes for more information.
  • To troubleshoot issues with the SN74ALS646ADW, start by verifying the power supply voltage, checking for proper signal termination, and ensuring that the device is properly connected to the PCB. Use oscilloscopes and logic analyzers to debug signal integrity issues.

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SN74ALS646ADW 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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