SCLS169G december   1982  – october 2022 SN54HCT74 , SN74HCT74

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Description
  4. 3 Revision History
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 Timing Requirements
    6. 5.6 Switching Characteristics
    7. 5.7 Operating Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Power Supply Recommendations
    2. 8.2 Layout
      1. 8.2.1 Layout Guidelines
  10. 9 Device and Documentation Support
    1. 9.1 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|14
  • DB|14
  • PW|14
  • N|14
  • NS|14
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.5 Timing Requirements

overrecommended operating free-air temperature range (unless otherwise noted)
VCC TA = 25°C SN54HCT74(1) SN74HCT74 UNIT
MIN MAX MIN MAX MIN MAX
fclock Clock frequency 4.5 V 27 18 22 MHz
5.5 V 30 20 24
tw Pulse duration PRE or CLR low 4.5 V 16 24 20 ns
5.5 V 14 21 18
CLK high or low 4.5 V 18 27 23
5.5 V 16 24 21
tsu Setup time before CLK­↑ Data 4.5 V 12 18 15 ns
5.5 V 11 16 14
PRE or CLR inactive 4.5 V 0 0 0
5.5 V 0 0 0
th Hold time, data after CLK­↑ 4.5 V 0 0 0 ns
5.5 V 0 0 0
(1) SN54HCT74 is in product preview.