SN74HCS157QWBQBRQ1

Overview

The SN74HCS157QWBQBRQ1 is an automotive quadruple 2-to-1 multiplexer from the HCS logic series. It operates within a supply voltage range of 2 V to 6 V and supports an ambient temperature range of -40°C to +125°C. The device features Schmitt-trigger inputs for noise tolerance and balanced CMOS push-pull outputs capable of ±7.8-mA drive at 6 V. It utilizes a 16-pin WQFN (WBQB) package with wettable flanks.

Feature Summary

• AEC-Q100 qualified for automotive applications
• Schmitt-trigger inputs support slow or noisy signals
• Available in wettable flank QFN (WBQB) package

Applications

• Data selection
• Multiplexing

Procurement Notes

Verify the specific WBQB package suffix against official documentation to ensure correct physical form factor. Confirm AEC-Q100 qualification requirements align with target automotive grade specifications. Review absolute maximum ratings for thermal and electrical limits during integration.

Selection Notes

Select this component when high-speed data routing requires robust noise immunity in automotive environments. The wide voltage range accommodates various power architectures. Ensure PCB layout accounts for the thermal pad connection and wettable flank soldering requirements.

Part Context

This part belongs to the SN74HCS157-Q1 family, designed specifically for automotive use. It provides four independent 2:1 multiplexers controlled by shared address and strobe inputs. The HCS series combines high speed with low power consumption and enhanced input characteristics compared to standard CMOS logic.

Replacement Considerations

SN74HCS157PW-Q1

FAQ

How do Schmitt-trigger inputs benefit this multiplexer?

They provide hysteresis, making the device tolerant to slow input transitions and noisy signals without requiring strict transition rate specifications.

What is the function of the strobe input?

A high level at the strobe terminal forces all outputs low, regardless of the state of other inputs.