M74HC157RM13TR

Overview

The M74HC157RM13TR is a quad 2-input multiplexer manufactured by STMicroelectronics, belonging to the 74HCT logic series. It features four independent data selectors, each capable of selecting one of two inputs based on a common select line. The device operates on a single power supply ranging from 4.5V to 5.5V and utilizes a 16-SO surface-mount package with 16 pins. It supports true outputs and includes an active-low enable input for controlling data flow.

Feature Summary

• Contains four independent 2-to-1 multiplexing circuits within a single integrated circuit
• Features true outputs that directly reflect the selected input state without inversion
• Includes an active-low enable pin to control the operation of all four multiplexers simultaneously

Applications

• Data routing in digital signal processing systems
• Address decoding in microcontroller-based interfaces
• Signal selection in test and measurement equipment

Procurement Notes

Verify the specific suffix RM13TR against official STMicroelectronics documentation to confirm the tape-and-reel packaging configuration and lead frame material. Ensure compatibility with standard 5V logic levels, as this component belongs to the HCT series which requires strict voltage adherence for proper switching thresholds. Cross-reference the RoHS status and REACH compliance details with current regulatory requirements before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring multiple independent signal paths controlled by a common address bus. The HCT series ensures compatibility with standard TTL logic levels while offering CMOS low-power advantages. Consider the 16-SO package dimensions for PCB layout constraints and verify thermal dissipation capabilities under maximum load conditions during high-frequency operation scenarios.

Part Context

This part is part of the widely adopted 74-series logic family, specifically the High-speed CMOS Technology (HCT) subset. It serves as a fundamental building block for digital logic design, providing reliable multiplexing functionality. The M74HC157RM13TR variant represents the surface-mount version optimized for automated assembly processes in modern electronics manufacturing.

Replacement Considerations

CD74HCT157M96 from Texas Instruments is a confirmed direct substitute. Verify pinout compatibility and electrical characteristics against original datasheets before implementation.