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SN74LS244N - Texas Instruments

Description: Buffers, Drivers, Receivers, Transceivers DIP-20 RoHS

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SN74LS244N - Texas Instruments - PCB symbol
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PCB Footprints
SN74LS244N - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - N (R-PDIP-T20)
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SN74LS244N - Texas Instruments - 3D model - Dual-In-Line Packages - N (R-PDIP-T20)
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SN74LS244N Details

  • Manufacturer Part Number:

    SN74LS244N

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Control Type:

    ENABLE LOW

  • Count Direction:

    UNIDIRECTIONAL

  • Family:

    LS

  • JESD-30 Code:

    R-PDIP-T20

  • JESD-609 Code:

    e4

  • Length:

    25.4 mm

  • Load Capacitance (CL):

    45 pF

  • Logic IC Type:

    BUS DRIVER

  • Max I(ol):

    0.024 A

  • Number of Bits:

    4

  • Number of Functions:

    8

  • 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:

    DIP

  • Package Equivalence Code:

    DIP20,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Packing Method:

    TUBE

  • 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:

    5.08 mm

  • Supply Voltage-Max (Vsup):

    5.25 V

  • Supply Voltage-Min (Vsup):

    4.75 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    NO

  • Technology:

    TTL

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

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

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

SN74LS244N Frequently Asked Questions (FAQs)

  • The maximum frequency of operation for the SN74LS244N is typically around 30-40 MHz, but this can vary depending on the specific application and operating conditions.
  • To ensure reliable operation in high-temperature environments, it's essential to follow proper thermal management practices, such as providing adequate heat sinking and ensuring good airflow around the device. Additionally, consider using a thermal interface material to improve heat transfer between the device and the heat sink.
  • The recommended power-on sequence for the SN74LS244N is to apply power to the VCC pin before applying any input signals. This helps prevent unwanted output states during power-up.
  • To handle bus contention when using the SN74LS244N as a bus transceiver, use external resistors or diodes to isolate the output stages and prevent backdrive currents. Additionally, consider using a bus arbiter or other bus management circuitry to ensure proper bus access and control.
  • The maximum capacitive load that the SN74LS244N can drive is typically around 100-150 pF, but this can vary depending on the specific application and operating conditions. It's essential to consider the capacitive load when designing the system to ensure reliable operation.

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SN74LS244N 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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SN74LS244N Alternates

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Part Image SN54LS244JD Motorola Semiconductor Products

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Part Image SN74LS244N AMD

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Part Image SN54LS244J-00 Freescale Semiconductor

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Part Image SN74LS244ND Motorola Semiconductor Products

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Part Image SN54LS244J Motorola Semiconductor Products

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For a full list of alternate parts for SN74LS244N, check out Findchips.com