MC74AC138DTR2G

Overview

The MC74AC138DTR2G is a high-speed CMOS 1-of-8 decoder/demultiplexer from the 74AC logic family, manufactured by onsemi. It operates within a supply voltage range of 2 V to 6 V and features three address inputs for selecting one of eight active-low outputs. The device includes three enable inputs for cascading or system control. Packaged in a 16-pin TSSOP surface-mount case, it supports an operating temperature range from -40°C to +85°C. This component is designed for applications requiring low power consumption and high noise immunity.

Feature Summary

• Provides decoding or demultiplexing functions with one active-low output selected by three binary address inputs
• Includes three enable inputs to manage device activation and facilitate cascading configurations
• Operates across a wide supply voltage range from 2 V to 6 V for flexible system integration

Applications

• Address decoding in microprocessor-based systems
• Data distribution in digital communication circuits
• Memory chip selection in embedded controllers

Procurement Notes

Verify the specific suffix DTR2G confirms the TSSOP-16 package and reel packaging format. Ensure the order matches the 74AC logic series requirements for voltage and speed. Confirm RoHS compliance status through official manufacturer documentation before procurement. Check for any recent product change notices that may affect pinout or electrical characteristics.

Selection Notes

Select this component when a single active-low output is required from multiple input lines within the 2V to 6V range. Consider the 74AC series for faster switching speeds compared to standard 74LS logic. Evaluate the TSSOP-16 package for space-constrained printed circuit board designs. Verify that the three enable inputs align with the system's control logic requirements.

Part Context

This part belongs to the MC74AC138 series of decoders and demultiplexers produced by onsemi. It is part of the broader 74AC logic family, which offers improved performance over earlier generations. The DTR2G designation indicates the specific tape-and-reel packaging variant suitable for automated assembly processes in manufacturing environments.