MC74AC138ML1

Overview

The MC74AC138ML1 is a high-speed CMOS decoder/demultiplexer from the onsemi 74AC series. It features one input and eight outputs, housed in a 16-pin SOIC package. The device operates within a supply voltage range of 2 V to 6 V and supports surface-mount installation. It functions as a 1-of-8 decoder or demultiplexer with inverted outputs.

Feature Summary

• Provides 1-to-8 decoding or demultiplexing functionality
• Features inverted active-low outputs for signal routing
• Operates with standard CMOS logic levels

Applications

• Address decoding in microprocessor systems
• Data distribution in digital communication circuits
• Memory chip selection logic

Procurement Notes

Verify the specific suffix ML1 against the official datasheet to confirm package dimensions and tape-and-reel specifications. Ensure compatibility with existing PCB footprints and soldering profiles. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm authenticity and current production status before finalizing procurement orders.

Selection Notes

Select this component when a 1-of-8 decoding function is required within the 2 V to 6 V operating range. The SOIC-16 package suits surface-mount assembly processes. Consider the 74AC logic family characteristics regarding speed and power consumption relative to system requirements compared to HC or AC alternatives.

Part Context

This component belongs to the 74AC logic family, known for high-speed operation compatible with TTL inputs. The 138 designation indicates a 3-to-8 line decoder structure. The ML1 suffix typically denotes a specific tape-and-reel packaging configuration for automated assembly, distinct from tube-packaged variants like the DG series.

Replacement Considerations

MC74AC138DG serves as a direct functional equivalent with identical electrical characteristics but utilizes tube packaging instead of reel packaging.