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MM74HCT244N - onsemi

Description: Inverting Octal 3-STATE Buffer

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MM74HCT244N - onsemi - PCB symbol
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PCB Footprints
MM74HCT244N - onsemi PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - .20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N20A-3
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3D Models
MM74HCT244N - onsemi - 3D model - Dual-In-Line Packages - .20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N20A-3
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  • Datasheet Download Datasheet
  • Stock & Prices $ Price & Stock for MM74HCT244N
  • Part Number MM74HCT244N
  • Manufacturer onsemi
  • Pin Count 20
  • Part Category Integrated Circuit
  • Package Category Dual-In-Line Packages
  • Footprint Name Dual-In-Line Packages - .20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N20A-3
  • Released Date Jan 11, 2017
  • Last Modified Date Jun 14, 2025 4:13 AM UTC
  • Pinout / Pin List Click Here (Member Only)

MM74HCT244N Details

  • Manufacturer Part Number:

    MM74HCT244N

  • Brand Name:

    ON Semiconductor

  • Pbfree Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Package Description:

    DIP-20

  • Manufacturer Package Code:

    N20A

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Control Type:

    ENABLE LOW

  • Count Direction:

    UNIDIRECTIONAL

  • Family:

    HCT

  • JESD-30 Code:

    R-PDIP-T20

  • Length:

    26.075 mm

  • Load Capacitance (CL):

    50 pF

  • Logic IC Type:

    BUS DRIVER

  • Max I(ol):

    0.006 A

  • Number of Bits:

    4

  • Number of Functions:

    2

  • Number of Ports:

    2

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °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

  • Power Supply Current-Max (ICC):

    70 mA

  • Prop. Delay@Nom-Sup:

    25 ns

  • Propagation Delay (tpd):

    35 ns

  • Seated Height-Max:

    5.08 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    NO

  • Technology:

    CMOS

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

MM74HCT244N Frequently Asked Questions (FAQs)

  • The maximum operating frequency of the MM74HCT244N is typically around 50 MHz, but it can vary depending on the specific application and operating conditions.
  • The output enable (OE) pin is active-low, meaning that the outputs are enabled when OE is low and disabled when OE is high. You should connect OE to a logic low signal to enable the outputs, and to a logic high signal to disable them.
  • To prevent latch-up and ensure proper operation, it is recommended to power up the VCC pin before applying any input signals, and to power down the VCC pin last when shutting down the device.
  • Yes, the MM74HCT244N is compatible with 5V systems, but you should ensure that the input signals are within the recommended voltage range (VCC - 0.5V to VCC + 0.5V) to prevent damage to the device.
  • To prevent latch-up, ensure that all input signals are within the recommended voltage range (VCC - 0.5V to VCC + 0.5V) and that there are no input signal transitions during power-up or power-down. You can also use input resistors or series resistors to limit the input current and prevent latch-up.

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