SN74F157ANSR

Overview

The SN74F157ANSR is a quad 2-input data selector/multiplexer from the Texas Instruments 74F series. It operates on a single 4.5 V to 5.5 V supply and features four independent multiplexing circuits in a 16-pin SOIC package. The device provides high-speed performance with a propagation delay of 10 ns, suitable for demanding digital logic applications requiring rapid signal routing.

Feature Summary

• Integrates four independent 2-to-1 multiplexers within a single integrated circuit
• Delivers high-speed switching capabilities optimized for fast digital systems
• Supports standard 5 V logic operation with defined voltage ranges

Applications

• Data routing in high-speed digital communication interfaces
• Address decoding and selection in computer memory architectures
• Signal path switching in test and measurement instrumentation

Procurement Notes

Verify the specific suffix 'ANSR' against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the ordering information with official Texas Instruments documentation to validate availability and manufacturing status before finalizing procurement plans.

Selection Notes

Select this component when high-speed multiplexing is required within a standard 5 V logic environment. The 74F series offers faster propagation delays compared to standard 74LS equivalents. Consider the 16-pin SOIC package for surface-mount assembly constraints. Evaluate power consumption and thermal dissipation requirements relative to the total number of active channels in the design.

Part Context

This part belongs to the widely adopted 74F (Fast) logic family, known for superior speed-performance-power product characteristics. It serves as a direct functional replacement for older bipolar logic families while maintaining pin compatibility with other 74-series devices. The SN74F157A variant specifically addresses applications needing rapid data selection without the complexity of additional control logic.

Replacement Considerations

SN74F157AN is a documented parameter-equivalent alternative available from Texas Instruments.