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CD74HC191M - Texas Instruments

Description: Texas Instruments CD74HC191M, 4-stage, Binary Counter, Up/Down Counter, Bi-Directional, 2 → 6 V, 16-Pin SOIC

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CD74HC191M - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D (R-PDSO-G16)
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CD74HC191M - Texas Instruments  - 3D model - Small Outline Packages - D (R-PDSO-G16)
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CD74HC191M Details

  • Manufacturer Part Number:

    CD74HC191M

  • Brand Name:

    Texas Instruments

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Pin Count:

    16

  • Country Of Origin:

    Mexico

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Additional Feature:

    RCO OUTPUT

  • Count Direction:

    BIDIRECTIONAL

  • Family:

    HC/UH

  • JESD-30 Code:

    R-PDSO-G16

  • JESD-609 Code:

    e4

  • Length:

    9.9 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

  • Moisture Sensitivity Level:

    1

  • 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:

    SOP

  • Package Equivalence Code:

    SOP16,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TUBE

  • Peak Reflow Temperature (Cel):

    260

  • 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:

    1.75 mm

  • Supply Voltage-Max (Vsup):

    6 V

  • Supply Voltage-Min (Vsup):

    2 V

  • Supply Voltage-Nom (Vsup):

    4.5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    MILITARY

  • Terminal Finish:

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

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Trigger Type:

    POSITIVE EDGE

  • Width:

    3.9 mm

  • fmax-Min:

    23 MHz

CD74HC191M Frequently Asked Questions (FAQs)

  • The CD74HC191M can handle clock frequencies up to 25 MHz, but it's recommended to check the specific application and operating conditions to ensure reliable operation.
  • It's essential to provide a stable power supply with a decoupling capacitor (typically 0.1 μF) close to the VCC pin to ensure proper operation and reduce noise. Additionally, follow proper PCB layout and grounding practices.
  • Yes, the CD74HC191M is compatible with 5V systems, but it's essential to ensure that the input signals and output loads are within the recommended operating conditions to avoid damage or malfunction.
  • The CLR input should be synchronized with the clock signal to avoid metastability issues. It's recommended to use a synchronous clear or a clock-enabled clear signal to ensure reliable operation.
  • The CD74HC191M can sink or source up to 6 mA per output pin, but it's recommended to check the specific application and output loading to ensure reliable operation.

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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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