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SN74HCT74DBR - Texas Instruments

Description: Dual D-Type Positive-Edge-Triggered Flip-Flops With Clear and Preset

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SN74HCT74DBR - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - SSOP-14
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SN74HCT74DBR - Texas Instruments  - 3D model - Small Outline Packages - SSOP-14
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SN74HCT74DBR Details

  • Manufacturer Part Number:

    SN74HCT74DBR

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SSOP

  • Pin Count:

    14

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Family:

    HCT

  • JESD-30 Code:

    R-PDSO-G14

  • JESD-609 Code:

    e4

  • Length:

    6.2 mm

  • Load Capacitance (CL):

    50 pF

  • Logic IC Type:

    D FLIP-FLOP

  • Max Frequency@Nom-Sup:

    22000000 Hz

  • Max I(ol):

    0.004 A

  • Moisture Sensitivity Level:

    1

  • Number of Bits:

    1

  • Number of Functions:

    2

  • Number of Terminals:

    14

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Polarity:

    COMPLEMENTARY

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SSOP

  • Package Equivalence Code:

    SSOP14,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, SHRINK PITCH

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Power Supply Current-Max (ICC):

    0.04 mA

  • Prop. Delay@Nom-Sup:

    35 ns

  • Propagation Delay (tpd):

    35 ns

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2 mm

  • Supply Voltage-Max (Vsup):

    5.5 V

  • Supply Voltage-Min (Vsup):

    4.5 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:

    0.65 mm

  • Terminal Position:

    DUAL

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

    30

  • Trigger Type:

    POSITIVE EDGE

  • Width:

    5.3 mm

  • fmax-Min:

    25 MHz

SN74HCT74DBR Frequently Asked Questions (FAQs)

  • The maximum clock frequency of the SN74HCT74DBR is 30 MHz, but it can vary depending on the operating conditions and the quality of the clock signal.
  • To ensure proper initialization, connect the preset (PRE) and clear (CLR) inputs to a valid logic level (either VCC or GND) through a pull-up or pull-down resistor. This will ensure that the flip-flops are set to a known state on power-up.
  • The recommended operating voltage range for the SN74HCT74DBR is 4.5V to 5.5V, with a typical operating voltage of 5V.
  • While the SN74HCT74DBR is specified for 5V operation, it can be used in a 3.3V system with some limitations. However, the device's performance and noise immunity may be degraded at lower voltages. It's recommended to consult the datasheet and perform thorough testing to ensure reliable operation.
  • The preset and clear inputs are asynchronous, meaning they can be asserted at any time, regardless of the clock signal. To avoid unintended behavior, ensure that these inputs are synchronized with the clock signal or use them only during power-up or reset conditions.

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SN74HCT74DBR Overview

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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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