MC74ACT139DR2G-Q

Overview

The MC74ACT139DR2G-Q is a high-speed, dual 1-of-4 decoder/demultiplexer from the 74ACT logic series. It contains two independent decoders, each accepting two binary weighted address inputs (A0-A1) and providing four mutually exclusive active-LOW outputs (O0-O3). Each decoder features an active-LOW enable input that can function as a data input for demultiplexing applications. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports TTL-compatible inputs. It is housed in a SOIC-16 package.

Feature Summary

• Contains two completely independent 1-of-4 decoders with active-LOW mutually exclusive outputs.
• Features TTL compatible inputs for seamless integration with standard logic families.
• Each decoder's enable input functions as a data input for 4-output demultiplexer configurations.
• Capable of generating all four minterms of two variables for function generation.

Applications

• Address decoding in microprocessor-based systems
• Data distribution via demultiplexer configurations
• Implementation of Boolean function generators using minterms

Procurement Notes

Verify the specific -Q suffix indicates automotive qualification and unique site control requirements. Confirm AEC-Q100 qualification status and PPAP capability are required for the target application environment. Ensure the ordering suffix matches the exact package type and lead-free specifications defined in the official datasheet to guarantee component authenticity and compliance.

Selection Notes

Select this component when a dual decoder or demultiplexer solution with TTL-compatible input thresholds is required. The 74ACT series offers higher speed performance compared to standard AC devices while maintaining CMOS power efficiency. Consider the SOIC-16 surface mount package for PCB space constraints. Verify that the operating temperature range and supply voltage limits align with the system design specifications.

Part Context

This part belongs to the MC74AC/ACT139 family of dual 1-of-4 decoders manufactured by onsemi. The 'ACT' designation signifies Advanced TTL-compatible CMOS technology, providing faster switching speeds than the standard AC variant. The '-Q' suffix denotes a qualified version suitable for automotive and other demanding applications requiring specific manufacturing controls and reliability standards.

Replacement Considerations

MC74ACT139DR2G