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SN74HC191DR - Texas Instruments

Description: 4-Bit Synchronous Up/Down Binary Counters

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SN74HC191DR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - D (R-PDSO-G16)
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SN74HC191DR - Texas Instruments  - 3D model - Small Outline Packages - D (R-PDSO-G16)
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SN74HC191DR Details

  • Manufacturer Part Number:

    SN74HC191DR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    16

  • Country Of Origin:

    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-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:

    17000000 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:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP16,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    0.08 mA

  • Prop. Delay@Nom-Sup:

    41 ns

  • Propagation Delay (tpd):

    240 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):

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • 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:

    19 MHz

SN74HC191DR Frequently Asked Questions (FAQs)

  • The SN74HC191DR can handle clock frequencies up to 40 MHz.
  • To ensure proper reset, the reset input (R) should be held low for at least 10 ns, and then released while the clock input (CP) is low.
  • The SN74HC191DR is a 4-bit synchronous up/down counter, so it can store a maximum count value of 15 (1111 in binary).
  • Yes, the SN74HC191DR can be used as a divide-by-n counter by connecting the Q0 output to the CP input and using the load input (LD) to load the desired count value.
  • The load input (LD) is asynchronous, meaning it can be changed at any time. The count enable inputs (ENP, ENT) are synchronous, meaning they should only be changed while the clock input (CP) is low.

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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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