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SN74LS244DWRE4 - Texas Instruments

Description: Buffers & Line Drivers Octal Buff/Line Drvr W/3-State Otpt

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SN74LS244DWRE4 - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW0020a_2021
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SN74LS244DWRE4 - Texas Instruments  - 3D model - Small Outline Packages - DW0020a_2021
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SN74LS244DWRE4 Details

  • Manufacturer Part Number:

    SN74LS244DWRE4

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    SOIC-20

  • Pin Count:

    20

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Control Type:

    ENABLE LOW

  • Count Direction:

    UNIDIRECTIONAL

  • Family:

    LS

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    12.8 mm

  • Load Capacitance (CL):

    45 pF

  • Logic IC Type:

    BUS DRIVER

  • Max I(ol):

    0.024 A

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    4

  • Number of Functions:

    2

  • Number of Ports:

    2

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    70 °C

  • Output Characteristics:

    3-STATE

  • Output Polarity:

    TRUE

  • 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):

    50 mA

  • Prop. Delay@Nom-Sup:

    18 ns

  • Propagation Delay (tpd):

    18 ns

  • Qualification Status:

    Not Qualified

  • 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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    7.5 mm

SN74LS244DWRE4 Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the SN74LS244DWRE4 is 35 MHz, but it can vary depending on the load capacitance and the output current.
  • To ensure signal integrity, use a low-impedance PCB design, keep the signal traces short, and use termination resistors to match the impedance of the transmission line. Additionally, consider using a buffer or repeater to regenerate the signal if it needs to travel a long distance.
  • The recommended power-on sequence is to apply VCC before applying any input signals. This ensures that the internal circuitry is properly initialized and reduces the risk of latch-up or damage to the device.
  • Yes, the SN74LS244DWRE4 can operate with a supply voltage as low as 2.7V, but the output voltage will be reduced accordingly. However, the device is not 3.3V-tolerant, so the input signals should not exceed 3.3V to prevent damage to the device.
  • To handle thermal issues, ensure good airflow around the device, use a heat sink if necessary, and consider using a thermally-enhanced package such as the QFN or BGA. Additionally, reduce the power consumption by minimizing the output current and using a lower supply voltage if possible.

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SN74LS244DWRE4 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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For a full list of alternate parts for SN74LS244DWRE4, check out Findchips.com