MC74AC138D

Overview

The MC74AC138D is a decoder/demultiplexer from the 74AC logic family, manufactured by onsemi. It features one input line and eight output lines, packaged in a 16-pin SOIC format. The device operates within a supply voltage range of 2 V to 6 V and supports surface mount installation. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides decoding or demultiplexing functionality with inverted outputs
• Compatible with standard CMOS logic levels for broad interface integration
• Designed for industrial-grade environmental stability

Applications

• Address decoding for memory systems
• Signal routing in digital communication circuits
• Control logic for peripheral selection

Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-16 package configuration required for your design. Confirm RoHS compliance status through official datasheets prior to procurement. Ensure the operating voltage aligns with the 2V to 6V specification to prevent device malfunction.

Selection Notes

Select this component when a wide supply voltage range is necessary compared to fixed-voltage logic families. The AC series offers improved speed over HC variants while maintaining CMOS power efficiency. Verify pin compatibility if replacing older 74LS or 74HC equivalents in existing layouts.

Part Context

This part belongs to the MC74AC138 series of decoders and demultiplexers. It shares functional similarities with other members like MC74AC138DG but differs in packaging. The series is designed for general-purpose digital logic applications requiring reliable signal distribution.

Replacement Considerations

MC74AC138DG serves as a direct substitute with identical electrical characteristics but utilizes a different tape-and-reel packaging format.