SCLS113F December   1982  – February 2025 SN54HC157 , SN54HC157-SP , SN74HC157

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 Switching Characteristics
    6. 4.6 Operating Characteristics
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Standard CMOS Inputs
      2. 6.3.2 TTL-Compatible CMOS Inputs
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
        1. 7.2.1.1 Power Considerations
        2. 7.2.1.2 Input Considerations
        3. 7.2.1.3 Output Considerations
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      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

7.4.2 Layout Example

SN54HC157 SN74HC157 Example Trace Corners for Improved Signal Integrity Figure 7-3 Example Trace Corners for Improved Signal Integrity
SN54HC157 SN74HC157 Example Bypass Capacitor Placement for TSSOP and Similar PackagesFigure 7-4 Example Bypass Capacitor Placement for TSSOP and Similar Packages
SN54HC157 SN74HC157 Example Bypass Capacitor Placement for SOT, SC70 and Similar PackagesFigure 7-6 Example Bypass Capacitor Placement for SOT, SC70 and Similar Packages
SN54HC157 SN74HC157 Example Bypass Capacitor Placement for WQFN and Similar PackagesFigure 7-5 Example Bypass Capacitor Placement for WQFN and Similar Packages
SN54HC157 SN74HC157 Example Damping Resistor Placement for Improved Signal Integrity Figure 7-7 Example Damping Resistor Placement for Improved Signal Integrity