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CD74HC191E - Texas Instruments

Description: CD74HC191E, 4-stage Binary Counter Up/Down Counter, Bi-Directional, 2 → 6 V, 16-Pin PDIP

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CD74HC191E - Texas Instruments PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - N (R-PDIP-T16)
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CD74HC191E - Texas Instruments  - 3D model - Dual-In-Line Packages - N (R-PDIP-T16)
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CD74HC191E Details

  • Manufacturer Part Number:

    CD74HC191E

  • Brand Name:

    Texas Instruments

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    DIP

  • Pin Count:

    16

  • Country Of Origin:

    Malaysia, Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Additional Feature:

    RCO OUTPUT

  • Count Direction:

    BIDIRECTIONAL

  • Family:

    HC/UH

  • JESD-30 Code:

    R-PDIP-T16

  • JESD-609 Code:

    e4

  • Length:

    19.305 mm

  • Load Capacitance (CL):

    50 pF

  • Load/Preset Input:

    YES

  • Logic IC Type:

    BINARY COUNTER

  • Max Frequency@Nom-Sup:

    20000000 Hz

  • Max I(ol):

    0.0052 A

  • Mode of Operation:

    SYNCHRONOUS

  • Number of Bits:

    4

  • Number of Functions:

    1

  • Number of Terminals:

    16

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -55 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP16,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Packing Method:

    TUBE

  • Power Supply Current-Max (ICC):

    0.08 mA

  • Prop. Delay@Nom-Sup:

    37 ns

  • Propagation Delay (tpd):

    255 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    5.08 mm

  • Supply Voltage-Max (Vsup):

    6 V

  • Supply Voltage-Min (Vsup):

    2 V

  • Supply Voltage-Nom (Vsup):

    4.5 V

  • Surface Mount:

    NO

  • Technology:

    CMOS

  • Temperature Grade:

    MILITARY

  • Terminal Finish:

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

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Trigger Type:

    POSITIVE EDGE

  • Width:

    7.62 mm

  • fmax-Min:

    23 MHz

CD74HC191E Frequently Asked Questions (FAQs)

  • The CD74HC191E can handle clock frequencies up to 25 MHz, but it's recommended to check the specific application and operating conditions to ensure reliable operation.
  • To ensure proper reset, connect the MR (Master Reset) pin to a pull-up resistor and a capacitor to VCC, and make sure the reset pulse is at least 10 ns wide.
  • The recommended operating voltage range for the CD74HC191E is 2 V to 6 V, with a typical operating voltage of 5 V.
  • Yes, the CD74HC191E can operate at 3.3 V, but the output voltage levels may not be compatible with 3.3 V logic. Ensure that the output voltage levels meet the requirements of the receiving device.
  • To avoid unintended clearing of the counter, connect the CLR pin to VCC through a pull-up resistor or a logic gate that ensures the CLR pin is high during power-up.

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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 CD74HC191E, check out Findchips.com