SN74HCS238QDRQ1

Overview

The SN74HCS238QDRQ1 is an automotive-grade 3-to-8 line decoder/demultiplexer from Texas Instruments, belonging to the HCS logic family. It features three address inputs and eight active-low outputs, housed in a 16-pin SOIC package. The device operates within a supply voltage range of 2 V to 6 V and supports a wide operating temperature range from -40°C to +125°C. It exhibits a propagation delay of 54 ns and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle environments
• High-speed CMOS technology enabling operation across a broad 2 V to 6 V supply voltage range
• Schmitt-trigger inputs on address lines to improve noise immunity and signal integrity

Applications

• Address decoding for memory and I/O mapping in automotive electronic control units
• Demultiplexing data signals in high-voltage automotive communication networks
• Control logic for peripheral selection in harsh automotive thermal environments

Procurement Notes

Verify the specific suffix 'QDRQ1' against official Texas Instruments documentation to confirm the SOIC-16 package and automotive grade status. Ensure the component meets AEC-Q100 requirements for your specific application temperature class. Cross-reference the datasheet revision date to validate electrical characteristics before integration into production designs.

Selection Notes

Select this component when automotive reliability and Schmitt-trigger input noise immunity are required. The HCS series offers higher speed than standard HC devices while maintaining compatibility with similar form factors. Verify that the 54 ns propagation delay meets system timing constraints and that the 2 V to 6 V supply range aligns with the target power architecture.

Part Context

This part belongs to the SN74HCS238 family of decoders and demultiplexers. It shares functional similarities with the SN74HCS238QBQBRQ1 but differs in packaging, utilizing an SOIC-16 footprint instead of a WQFN. It serves as a specialized variant within the broader automotive logic portfolio designed for robust performance in demanding vehicular systems.