SCLS087F December   1982  – June 2021 SN54HC21 , SN74HC21

PRODUCTION DATA  

1. 1 Features
2. 2 Applications
3. 3 Description
4. 4 Revision History
5. 5 Pin Configuration and Functions
   1.     Pin Functions
6. 6 Specifications
   1. 6.1 Absolute Maximum Ratings
   2. 6.2 Recommended Operating Conditions
   3. 6.3 Thermal Information
   4. 6.4 Electrical Characteristics - 74
   5. 6.5 Electrical Characteristics - 54
   6. 6.6 Switching Characteristics - 74
   7. 6.7 Switching Characteristics - 54
   8. 6.8 Operating Characteristics
   9. 6.9 Typical Characteristics
7. 7 Parameter Measurement Information
8. 8 Detailed Description
   1. 8.1 Overview
   2. 8.2 Functional Block Diagram
   3. 8.3 Feature Description
      1. 8.3.1 Balanced CMOS Push-Pull Outputs
      2. 8.3.2 Standard CMOS Inputs
      3. 8.3.3 Clamp Diode Structure
   4. 8.4 Device Functional Modes
9. 9 Application and Implementation
   1. 9.1 Application Information
   2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
         1. 9.2.1.1 Power Considerations
         2. 9.2.1.2 Input Considerations
         3. 9.2.1.3 Output Considerations
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
10. 10Power Supply Recommendations
11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
12. 12Device and Documentation Support
    1. 12.1 Documentation Support
       1. 12.1.1 Related Documentation
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
13. 13Mechanical, Packaging, and Orderable Information