SN74HC253DT

Overview

The SN74HC253DT is a dual 4-to-1-line data selector/multiplexer from the Texas Instruments 74HC logic family. It features two independent multiplexers, each selecting one of four data inputs based on three address lines. The device operates within a supply voltage range of 2 V to 6 V and supports surface-mount installation in a 16-SOIC package. It exhibits a propagation delay of 38 ns and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Dual independent 4-to-1 multiplexer architecture
• Wide single-supply voltage operation capability
• High-speed signal selection with defined propagation characteristics

Applications

• Data routing in digital communication systems
• Address decoding for memory or peripheral selection
• Signal path switching in measurement equipment

Procurement Notes

Verify the specific suffix 'DT' corresponds to the 16-SOIC package and industrial temperature grade (-40°C to +85°C) as documented. Confirm RoHS compliance status and ensure the ordering part number matches the exact manufacturer designation to avoid substitution errors during procurement.

Selection Notes

Select this component when dual independent 4-to-1 multiplexing is required within the HC logic family constraints. Ensure the application voltage remains between 2 V and 6 V. Consider the 16-SOIC footprint for PCB layout compatibility and verify that the 38 ns propagation delay meets system timing requirements.

Part Context

This device belongs to the standard 74HC series of high-speed CMOS logic devices. It provides versatile data selection functionality commonly used in microprocessor-based systems. The SN74HC253 variant specifically offers two separate channels, allowing for simultaneous independent signal routing compared to single-channel alternatives.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.