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MM74HC244N - onsemi

Description: Octal 3-STATE Buffer

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MM74HC244N - onsemi - PCB symbol
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PCB Footprints
MM74HC244N - onsemi PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - PDIP20
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3D Models
MM74HC244N - onsemi - 3D model - Dual-In-Line Packages - PDIP20
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MM74HC244N Details

  • Manufacturer Part Number:

    MM74HC244N

  • 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:

    HC/UH

  • 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 Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Power Supply Current-Max (ICC):

    70 mA

  • Prop. Delay@Nom-Sup:

    29 ns

  • Propagation Delay (tpd):

    208 ns

  • Seated Height-Max:

    5.08 mm

  • Supply Voltage-Max (Vsup):

    6 V

  • Supply Voltage-Min (Vsup):

    2 V

  • Supply Voltage-Nom (Vsup):

    5 V

  • Surface Mount:

    NO

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Width:

    7.62 mm

MM74HC244N Frequently Asked Questions (FAQs)

  • The maximum frequency of operation for the MM74HC244N is typically 40 MHz, but it can vary depending on the specific application and operating conditions.
  • To ensure signal integrity, use proper PCB design techniques such as using short signal traces, minimizing impedance mismatches, and using termination resistors as needed. Additionally, ensure that the power supply is clean and well-regulated.
  • Yes, the MM74HC244N is compatible with 5V systems. However, ensure that the input signals are within the recommended voltage range (VCC - 1.5V to VCC + 0.5V) to prevent damage to the device.
  • The MM74HC244N has a maximum junction temperature of 150°C. Ensure good airflow around the device, and consider using a heat sink if the device is expected to operate at high temperatures or high frequencies.
  • The MM74HC244N is a commercial-grade device and may not meet the requirements for high-reliability or aerospace applications. Consider using a radiation-hardened or high-reliability version of the device, such as the RH74HC244N, for these types of applications.

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MM74HC244N Overview

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