MC74ACT138DG

Overview

The MC74ACT138DG is a 5V CMOS decoder/demultiplexer from the 74ACT series, manufactured by onsemi. It features one 3-to-8 line decoder with inverted outputs in a 16-SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports surface mount installation. It functions across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides 3-to-8 decoding functionality with active-low outputs for address decoding or data distribution
• Includes three enable inputs to control operation states and reduce power consumption during idle periods
• Utilizes advanced CMOS technology to ensure high noise immunity and compatibility with standard logic families

Applications

• Address decoding in microprocessor-based systems
• Data distribution networks requiring single input to multiple output routing
• Industrial control panels utilizing 5V logic interfaces

Procurement Notes

Verify the specific suffix DG indicates the SOIC-16 tube packaging configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the procurement channel provides valid traceability records for the 74ACT series component lot.

Selection Notes

Select this component when a single 3-to-8 decoder is required within the 74ACT family specifications. It serves as a direct replacement for legacy 74LS138 designs where higher speed and lower power consumption are necessary. Verify that the system voltage remains strictly within the 4.5V to 5.5V operational window.

Part Context

This part belongs to the MC74ACT138 family of decoders. It shares functional similarities with other 74ACT logic devices but is distinct in its specific 3-to-8 decoding topology. The DG suffix denotes the plastic small outline package variant suitable for automated surface mount assembly processes.

Replacement Considerations

MC74ACT138DR2G offers identical logical function in tape and reel packaging.