SCLS119E December   1982  – February 2022 SN54HC174 , SN74HC174

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 Recommended Operating Conditions (1)
    3. 6.3 Thermal Information
    4. 6.4 Electrical Characteristics
    5. 6.5 Timing Requirements
    6. 6.6 Switching Characteristics
    7. 6.7 Operating Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Device Functional Modes
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • W|16
  • J|16
  • FK|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.5 Timing Requirements

over recommended operating free-air temperature range (unless otherwise noted)
VCC (V) TA = 25°C SN54HC174 SN74HC174 UNIT
MIN MAX MIN MAX MIN MAX
fclock Clock frequency 2 6 4.2 5 MHz
4.5 31 21 25
6 36 25 29
tw Pulse duration CLR low 2 80 120 100 ns
4.5 16 24 20
6 14 20 17
CLK high or low 2 80 120 100
4.5 16 24 20
6 14 20 17
tsu Setup time before CLK­↑ Data 2 100 150 125 ns
4.5 20 30 25
6 17 25 21
CLR inactive 2 100 150 125
4.5 20 30 25
6 17 25 21
th Hold time, data after CLK­↑ 2 0 0 0 ns
4.5 0 0 0
6 0 0 0