SN74HCS151PWR

Overview

The SN74HCS151PWR is an 8-to-1 data selector/multiplexer from Texas Instruments featuring Schmitt-trigger inputs. It operates within a supply voltage range of 2V to 6V and supports an ambient temperature range of –40°C to +125°C. The device provides complementary outputs (Y and W) and includes a low-active strobe input for enabling or disabling the selected data source. It utilizes a TSSOP-16 package with dimensions of 5.00mm by 4.40mm.

Feature Summary

• Schmitt-trigger inputs provide noise rejection and tolerance for slow input signals
• Balanced CMOS push-pull outputs ensure similar sourcing and sinking capabilities
• Low power consumption with minimal static supply current
• Extended operating temperature range suitable for demanding environments

Applications

• Data selection
• Multiplexing
• Data routing

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the SN74HCS151 family includes multiple physical packages such as SOIC and QFN variants. Confirm that the component meets RoHS compliance requirements for your assembly process. Ensure the supply chain source provides valid documentation supporting the authenticity and revision level of the silicon die before integration into production designs.

Selection Notes

Select this component when noisy signal environments require the hysteresis provided by Schmitt-trigger inputs. It is appropriate for applications needing multiplexing across a wide voltage range from 2V to 6V. Consider the extended temperature rating if the system operates in harsh thermal conditions. Verify that the output drive capability aligns with the load capacitance and resistive requirements of the downstream circuitry.

Part Context

This part belongs to the SN74HCS logic family, which integrates high-speed CMOS technology with Schmitt-trigger input architectures. The HCS series is designed to offer improved noise immunity compared to standard HC logic while maintaining low power consumption. It serves as a robust solution for digital signal routing where signal integrity is critical due to environmental interference or slow transition rates.

Replacement Considerations

Direct functional substitutes include other 8-to-1 multiplexers with Schmitt-trigger inputs from the same manufacturer, such as the SN74HCS151D or SN74HCS151PWQ1. Cross-manufacturer replacements must be evaluated carefully to ensure pin compatibility and matching electrical characteristics, particularly regarding input hysteresis and output drive strength.