SN74HC253DR

Overview

The SN74HC253DR 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 data 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 a SOIC-Narrow-16 package. It is designed for high-speed digital applications with a propagation delay of 38 ns and an operating temperature range from -40°C to +125°C.

Feature Summary

• Dual independent 4-to-1 multiplexer architecture
• Wide supply voltage operation capability
• High-speed signal switching performance
• Extended industrial temperature range support

Applications

• Data routing in digital communication systems
• Address decoding circuits
• Signal selection in measurement equipment
• General-purpose multiplexing in embedded controllers

Procurement Notes

Verify the specific suffix 'DR' corresponds to the SOIC-16 tape-and-reel packaging configuration. Confirm that the component meets RoHS compliance standards as indicated by the manufacturer's current product status. Ensure the ordering part number matches the exact logic family and pinout requirements for your design.

Selection Notes

Select this component when dual independent 4-to-1 multiplexing is required within a single package. It is suitable for designs needing wide voltage flexibility between 2 V and 6 V. Consider the 38 ns propagation delay for timing constraints. Verify compatibility with existing logic levels and thermal management needs for the +125°C maximum rating.

Part Context

This part belongs to the standard 74HC series of high-speed CMOS logic devices. It provides a drop-in replacement for legacy 74HC253 equivalents from other manufacturers while maintaining industry-standard pinouts. The DR suffix specifically denotes the surface-mount variant packaged in a narrow small-outline integrated circuit format.

Replacement Considerations

Compatible substitutes include SN74HC253DRE4 and SN74HC253DT. Verify pin compatibility and electrical specifications before substitution.