74AC139MTC

Signal Switches, Multiplexers, Decoders Overview

The Fairchild Semiconductor 74AC139MTC is a dual 1-of-4 decoder/demultiplexer integrated circuit belonging to the AC logic family. It features a 16-pin TSSOP surface-mount package and operates within a supply voltage range of 2V to 6V. The device supports an operating temperature range from -40°C to 85°C. It includes two independent decoders, each with two address inputs and four active-low outputs. The component utilizes CMOS technology for low power consumption while maintaining high-speed performance characteristics typical of the AC series.

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual independent 1-of-4 decoding functionality
• Active-low output states for precise signal selection
• CMOS construction ensuring reduced power dissipation

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in microprocessor systems
• Data routing and demultiplexing operations
• Memory chip select generation

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the manufacturer designation as Fairchild Semiconductor or its successor entity onsemi. Confirm the specific suffix 'MTC' corresponds to the 16-lead Thin Shrink Small Outline Package (TSSOP). Ensure compatibility with required voltage levels and check for RoHS compliance documentation before finalizing procurement specifications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when dual independent decoding channels are required in a compact surface-mount form factor. The AC series offers faster switching speeds compared to standard HC logic families. Verify that the 2V to 6V supply range aligns with the system's power architecture and that the TSSOP footprint fits the PCB layout constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the widely adopted 74AC logic family, known for improved speed over earlier NMOS technologies. The 74AC139 variant specifically addresses applications requiring multiple simultaneous decoding paths. Fairchild Semiconductor, now part of onsemi, established this component as a standard solution for digital logic control tasks in consumer and industrial electronics.