SCAS520J August   1995  – April 2025 SN54ACT74 , SN74ACT74

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Description
  4. 3 Pin Configuration and Functions
  5. 4 Specifications
    1. 4.1 Absolute Maximum Ratings
    2. 4.2 Recommended Operating Conditions
    3. 4.3 Thermal Information
    4. 4.4 Electrical Characteristics
    5. 4.5 Timing Requirements
    6. 4.6 Switching Characteristics
    7. 4.7 Operating Characteristics
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Power Supply Recommendations
    2. 7.2 Layout
      1. 7.2.1 Layout Guidelines
      2. 7.2.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support (Analog)
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

4.6 Switching Characteristics

over recommended operating free-air temperature range (unless otherwise noted) (see Load Circuit and Voltage Waveforms)
PARAMETER FROM
(INPUT)		 TO
(OUTPUT)		 SN54ACT74 SN74ACT74 UNIT
TA = 25°C MIN MAX TA = 25°C MIN MAX
MIN TYP MAX MIN TYP MAX
fmax 145 210 85 145 210 125 MHz
tPLH PRE or CLR Q or Q 1 5.5 9.5 1 11.5 3 5.5 9.5 2.5 10.5 ns
tPHL 1 6 10 1 12.5 3 6 10 3 11.5
tPLH CLK Q or Q 1 7.5 11 1 14 4 7.5 11 4 13 ns
tPHL 1 6 10 1 12 3.5 6 10 3 11.5