SN74HC253QDREP

Overview

The SN74HC253QDREP is a dual 4-to-1-line data selector/multiplexer from the Texas Instruments HC logic family. It features two independent multiplexers, each selecting one of four inputs based on address lines. The device operates within a supply voltage range of 2 V to 6 V and supports surface mount installation in an SOIC-Narrow-16 package. It is qualified under AEC-Q100 standards for automotive applications, ensuring reliability across a wide operating temperature range from -40°C to +125°C with a propagation delay of 38 ns.

Feature Summary

• Dual independent 4-to-1 multiplexing capability
• Automotive qualification compliant with AEC-Q100 standards
• Wide operating temperature range suitable for harsh environments

Applications

• Automotive electronic systems requiring signal routing
• Data acquisition systems utilizing multiplexed inputs
• Industrial control circuits needing reliable signal selection

Procurement Notes

Verify the specific suffix QDREP against official Texas Instruments documentation to confirm it denotes the reel packaging format and automotive grade qualification. Ensure the ordering part number matches the exact device variant required for your design specifications before finalizing procurement orders.

Selection Notes

Select this component when dual 4-to-1 multiplexing is required in automotive or industrial environments. The HC series offers standard CMOS performance, while the AEC-Q100 qualification ensures suitability for automotive applications. Verify that the SOIC-Narrow-16 package fits your PCB layout constraints and that the 2V to 6V supply range aligns with your system power requirements.

Part Context

This device belongs to the SN74HC253 family of dual 4-line-to-1-line multiplexers. The 'Q' prefix typically indicates automotive qualification, while 'REP' often signifies tape and reel packaging. It is part of the broader 74HC logic family, providing high-speed CMOS operation compatible with standard TTL levels.

Replacement Considerations

Check for SN74HC253 variants without the automotive suffix if automotive qualification is not required. Consider SN74HC153 as a functional alternative if single-package dual mux is needed. Verify pinout compatibility before substituting.