CD74HC157M

Signal Switches, Multiplexers, Decoders Overview

The CD74HC157M is a high-speed CMOS quad 2-input data selector/multiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features four independent multiplexers with a common select input. The device provides true (non-inverted) outputs and includes an active-low enable input that forces all outputs low when asserted. It utilizes a 16-pin SOIC surface-mount package and is designed for applications requiring low power consumption and compatibility with LSTTL logic levels.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides four independent 2-to-1 data selection paths controlled by a single common select line
• Features active-low enable functionality to force all outputs to a low state regardless of input conditions
• Delivers non-inverted (true) data outputs for direct signal routing
• Compatible with LSTTL logic inputs while maintaining low CMOS power consumption

Signal Switches, Multiplexers, Decoders Applications

• Routing data between two register banks to a common output bus
• General-purpose digital signal switching in control systems
• Function generator circuit implementations requiring multi-channel selection

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'M' corresponds to the SOIC-16 package configuration as defined in the official datasheet. Confirm RoHS compliance status and lead-free material declarations directly from the manufacturer's current documentation, as these attributes may vary by production batch or regional regulatory requirements.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad multiplexer with common selection is required for low-voltage CMOS designs. Ensure the application supports the specified 2 V to 6 V operating range. Consider the SOIC-16 footprint constraints during PCB layout. Verify that the non-inverted output polarity meets the downstream logic requirements compared to inverted alternatives like the HC158.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Texas Instruments 74HC series of high-speed CMOS logic devices. The 74HC family is designed to be pin-compatible and functionally equivalent to the legacy Low-Power Schottky TTL (LSTTL) series, facilitating migration from older bipolar technologies to modern CMOS processes while offering significantly reduced power dissipation.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The SN74HC157N serves as a functional equivalent in the PDIP-16 through-hole package. For inverted output requirements, the SN74HC158 offers identical internal architecture but with complemented outputs. Verify package type and pinout compatibility before substitution.