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

3 Pin Configuration and Functions

SN54HC157 SN74HC157 J, D, DB, N, NS, or PW package16-Pin CDIP, SOIC, SSOP, PDIP, SO, TSSOPTop ViewJ, D, DB, N, NS, or PW package
16-Pin CDIP, SOIC, SSOP, PDIP, SO, TSSOP
Top View
SN54HC157 SN74HC157 FK package20-Pin LCCCTop ViewFK package
20-Pin LCCC
Top View
Pin Functions
PIN TYPE(1) DESCRIPTION
SOIC or TSSOP NO. NAME
1 A/B I Address select
2 1A I Channel 1, data input A
3 1B I Channel 1, data input B
4 1Y I Channel 1, data output
5 2A O Channel 2, data input A
6 2B O Channel 2, data input B
7 2Y I Channel 2, data output
8 GND — Ground
9 3Y I Channel 3, data output
10 3B I Channel 3, data input B
11 3A I Channel 3, data input A
12 4Y I Channel 4, data output
13 4B I Channel 4, data input B
14 4A I Channel 4, data input A
15 G I Output strobe, active low
16 VCC — Positive supply
(1) I = input, O = output, P = power, FB = feedback, GND = ground, N/A = not applicable