SN74HC157ANSR

Overview

The SN74HC157ANSR is a quadruple 2-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features an SOIC-16 surface-mount package. The device provides four independent multiplexers, each selecting one of two data inputs based on a common select line. Key electrical specifications include a propagation delay of 14 ns and an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates four independent 2-to-1 multiplexers within a single integrated circuit
• Utilizes high-speed CMOS technology for efficient signal processing
• Supports wide power supply voltage operation for flexible system integration

Applications

• Data routing in digital logic systems
• Signal selection in microcontroller interfaces
• Address decoding circuits

Procurement Notes

Verify the specific suffix 'ANSR' corresponds to the SOIC-16 package and tape-and-reel packaging format. Confirm compliance with RoHS directives and check for any recent product change notifications that may affect pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when multiple independent 2-to-1 signal paths are required in a compact form factor. Ensure the system voltage remains within the 2 V to 6 V range. Consider the 14 ns propagation delay against system timing requirements and verify thermal management capabilities for the specified industrial temperature range.

Part Context

This part belongs to the SN74HC157A family of quadruple multiplexers. It is functionally compatible with other HC-series logic devices but offers improved speed over standard HC variants. The 'A' suffix typically denotes enhanced performance characteristics, while 'NSR' indicates the specific SOIC-16 reel packaging configuration.

Replacement Considerations

SN74HC157ADWR: Alternative SOIC-8 variant with different pinout; requires schematic review. SN74HC157N: DIP-16 through-hole version; suitable for prototyping but not direct PCB replacement without layout changes.