CD74HCT157M

Overview

The CD74HCT157M is a high-speed CMOS logic multiplexer manufactured by Texas Instruments. It integrates four independent 2-input to 1-output 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 supports surface-mount installation in a 16-pin SOIC package. It functions across an extended industrial temperature range of -40 °C to 85 °C, ensuring reliable performance in demanding electronic environments.

Feature Summary

• Integrates four independent 2-to-1 data selectors for parallel signal routing
• Features HCT logic compatibility allowing direct interface with TTL-level inputs
• Supports surface-mount technology via a compact 16-pin SOIC package

Applications

• Data routing in digital communication systems
• Signal selection in microcontroller peripheral interfaces
• Address decoding in memory subsystems

Procurement Notes

Verify the specific manufacturer suffix against official datasheets to confirm pinout and electrical characteristics. Ensure the component meets RoHS compliance requirements for your assembly process. Confirm that the operating voltage range aligns with your system's power supply specifications before integration.

Selection Notes

Select this component when multiple independent signal paths require switching within a limited board space. The HCT series ensures compatibility with legacy TTL logic levels while offering CMOS noise immunity. Verify that the package type matches your PCB footprint and that the temperature rating suits the operational environment.

Part Context

This part belongs to the CD74HCT family of high-speed CMOS logic devices produced by Texas Instruments. The family provides robust performance for general-purpose digital applications, balancing speed and power consumption. The HCT designation specifically indicates compatibility with standard TTL input voltages, facilitating integration into mixed-logic designs.

Replacement Considerations

CD74HCT157M96