CD74HCT253M

Overview

The CD74HCT253M is a dual 4-to-1 line selector/multiplexer featuring three-state outputs, manufactured by Texas Instruments. It operates within a voltage range of 2V to 6V for HC types and 4.5V to 5.5V for HCT variants. The device utilizes a 16-pin SOIC surface-mount package. Key electrical characteristics include balanced propagation delay and transition times, with significant power reduction compared to LSTTL technologies. It supports an operating temperature range from -55°C to 125°C.

Feature Summary

• Dual 4-to-1 line selection capability with independent control sections
• Three-state outputs allowing direct bus connection without additional drivers
• High-speed CMOS technology ensuring balanced propagation delays
• Significant power reduction compared to Low-power Schottky TTL equivalents

Applications

• Data routing in digital communication systems
• Address decoding in microprocessor-based designs
• Signal switching in test and measurement equipment

Procurement Notes

Verify the specific suffix (e.g., M, ME4) against the manufacturer's current ordering guide to confirm package type and environmental compliance. Ensure the input voltage levels match the HCT logic family requirements for proper interfacing with standard TTL or CMOS sources. Confirm availability status as part numbers may undergo lifecycle changes.

Selection Notes

Select this component when dual independent multiplexing functions are required in a compact surface-mount form factor. The HCT series ensures compatibility with standard 5V logic families while offering lower power consumption than older bipolar technologies. Consider the 16-pin SOIC package constraints for PCB layout and thermal management during high-temperature operation.

Part Context

This part belongs to the Texas Instruments CD74HC(T)253 family of high-speed CMOS logic devices. It serves as a functional equivalent to industry-standard 74HCT253 components, providing dual 4-input multiplexer functionality. The device is designed for applications requiring reliable signal selection with minimal power dissipation in industrial and commercial environments.

Replacement Considerations

Public confirmed substitute part numbers include CD74HCT253ME4.