SN74HCS151QPWRQ1

Overview

The SN74HCS151QPWRQ1 is an automotive-grade 8-to-1 multiplexer with Schmitt-trigger inputs. It operates within a supply voltage range of 2V to 6V and supports an ambient temperature range from -40°C to +125°C. The device features balanced CMOS push-pull outputs capable of ±7.8mA drive at 6V, with typical propagation delays ranging from 7ns to 55ns depending on voltage and temperature. It includes full binary decoding for selecting one of eight data sources, providing complementary Y and W outputs.

Feature Summary

• Schmitt-trigger inputs provide high noise immunity and tolerance for slow input transitions
• AEC-Q100 qualified for automotive applications with specified temperature grades
• Balanced CMOS push-pull outputs ensure similar sourcing and sinking current capabilities

Applications

• Data selection
• Multiplexing

Procurement Notes

Verify the specific package suffix (e.g., PW for TSSOP) matches the required footprint. Confirm AEC-Q100 qualification status if automotive reliability is mandatory. Ensure design adheres to absolute maximum ratings for voltage and current to prevent damage. Check for wettable flank availability in QFN variants if automated optical inspection is required.

Selection Notes

Select this component when noisy environments or slow signal edges are present due to Schmitt-trigger inputs. Choose based on the required operating voltage between 2V and 6V. Consider thermal resistance metrics if operating near maximum junction temperatures. Verify output drive requirements against the ±7.8mA specification at the target supply voltage.

Part Context

This part belongs to the SN74HCS151-Q1 family of automotive logic devices. It is designed for high-speed silicon gate CMOS applications requiring robust data routing. The HCS series specifically integrates Schmitt-trigger functionality to enhance signal integrity compared to standard HC logic families in electrically noisy automotive systems.

Replacement Considerations

SN74HC151QDRQ1

FAQ

How do Schmitt-trigger inputs benefit this multiplexer?

They allow for slow or noisy input signals by providing hysteresis, which prevents false triggering and ensures stable operation in electrically noisy environments.

What happens when the strobe (G) input is high?

A high level at the strobe terminal forces the W output high and the Y output low, regardless of the state of the address or data inputs.