CD74HCT253E

Overview

The CD74HCT253E is a high-speed CMOS quad multiplexer manufactured by Texas Instruments. It integrates four independent 2-line to 1-line data selectors within a single package, utilizing the HCT logic series for compatibility with TTL-driven systems. The device operates on a single power supply ranging from 4.5 V to 5.5 V and features three-state outputs for bus-oriented applications. Designed for through-hole mounting, it utilizes a standard 16-pin PDIP package. The component supports an extended industrial temperature range from -55°C to +125°C, ensuring reliable performance in demanding environments.

Feature Summary

• Integrates four independent 2-to-1 multiplexers for efficient signal routing
• Features three-state outputs to facilitate direct connection to system buses
• Provides HCT logic compatibility for seamless interfacing with TTL devices

Applications

• Data routing in digital communication systems
• Address decoding circuits
• Bus switching applications

Procurement Notes

Verify the specific manufacturer part number against official Texas Instruments documentation to confirm pinout and electrical specifications. Ensure the procurement channel provides valid RoHS compliance certificates. Confirm that the packaging type matches the required through-hole installation method for your PCB design.

Selection Notes

Select this component when designing circuits requiring multiple independent signal paths controlled by common select lines. The HCT series ensures voltage level compatibility with standard 5V logic families. Consider the PDIP package constraints regarding board space and thermal dissipation requirements compared to surface-mount alternatives.

Part Context

This component belongs to the CD74HCT family of high-speed CMOS logic devices produced by Texas Instruments. The family is characterized by wide operating voltage ranges and robust noise immunity. The '253' designation specifically identifies the internal architecture as a set of quad 2-input multiplexers, distinguishing it from other logic functions like decoders or gates within the same series.

Replacement Considerations

Consult official cross-reference guides for equivalent parts. Verify that any substitute maintains identical pin configurations and electrical characteristics to ensure direct interchangeability without circuit redesign.