SN74LVC157AQPWRQ1

Overview

The SN74LVC157AQPWRQ1 is an automotive-grade quadruple 2-line to 1-line data selector and multiplexer from Texas Instruments. It belongs to the LVC logic series, supporting a supply voltage range of 2 V to 3.6 V. The device features four independent multiplexers in a single package, housed in a TSSOP-16 surface-mount package. It operates within an extended temperature range of -40°C to +125°C and includes qualified AEC-Q100 certification for automotive applications.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards
• Quadruple configuration providing four independent 2-to-1 multiplexers
• Low-voltage operation compatible with 2 V to 3.6 V power supplies

Applications

• Automotive electronic control units requiring signal routing
• Data bus switching in vehicle communication systems
• Input selection circuits in automotive infotainment modules

Procurement Notes

Verify the complete part number including the Q1 suffix to confirm automotive grade status. Ensure the TSSOP-16 package matches the target PCB footprint. Confirm that the 2 V to 3.6 V operating voltage aligns with the system power rails. Validate that the -40°C to +125°C temperature rating meets environmental requirements.

Selection Notes

Select this component when automotive reliability and low-voltage compatibility are required. The LVC series offers improved performance over standard logic families at lower voltages. The quadruple configuration reduces board space compared to using individual multiplexers. Verify pinout compatibility if replacing older logic families in existing designs.

Part Context

This device is part of the SN74LVC157A family of multiplexers. It shares functional similarities with non-automotive variants but includes specific testing and documentation for automotive use. The Q1 suffix denotes automotive qualification, distinguishing it from commercial grade parts like the SN74LVC157APW.

Replacement Considerations

Direct substitutes include other automotive-qualified 2-to-1 multiplexers from the same manufacturer. Check pinout compatibility before swapping with similar devices from different vendors. Ensure voltage levels and propagation delays meet circuit timing requirements.