M74HC157B1R

Overview

The M74HC157B1R is a high-speed CMOS quad 2-channel multiplexer fabricated with silicon gate C2MOS technology. It operates on a single supply voltage ranging from 2 V to 6 V. The device features four independent data selectors, each capable of routing one of two inputs to a common output based on a select input. It includes an active-low enable input to control operation. The component is housed in a 16-pin PDIP package and supports through-hole installation. It functions with non-inverting outputs and is designed for serial-to-parallel conversion applications within digital logic circuits.

Feature Summary

• Quad configuration providing four independent 2-to-1 channel multiplexing paths
• High-speed CMOS fabrication ensuring low power consumption and fast switching
• Active-low enable input for precise operational control and state management

Applications

• Data selection in microprocessor systems
• Signal routing in communication interfaces
• Parallel data acquisition from multiple sources

Procurement Notes

Verify current manufacturing status as the part may be obsolete. Confirm pin compatibility and electrical specifications against target design requirements. Check for authorized distributors offering genuine STMicroelectronics components. Ensure environmental compliance documentation is available if required by project standards.

Selection Notes

Select this component when a compact solution for multiple signal paths is needed. Consider the HC series speed and voltage range suitability for the system. Evaluate package constraints for PCB layout. Compare performance metrics with alternative multiplexers if higher channel counts or different logic families are required.

Part Context

This component belongs to the M74HC1xx series of logic integrated circuits from STMicroelectronics. It utilizes standard CMOS technology compatible with various digital logic families. The device is part of a broader portfolio of multiplexers and demultiplexers designed for general-purpose digital applications.

Replacement Considerations

Direct substitute: CD74HC157E (Texas Instruments). Verify pinout and electrical characteristics match before implementation.