74AHCT139D,112

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74AHCT139D,112 is a dual decoder/demultiplexer integrated circuit belonging to the 74AHCT logic family. It operates within a supply voltage range of 4.5 V to 5.5 V and features two independent 2-to-4 line decoders in a single 16-pin SO package. The device provides active-low outputs with an output drive capability of 8 mA for both high and low states. It supports surface-mount installation and functions reliably across an extended temperature range from -40 °C to +125 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Contains two independent 2-to-4 line decoder circuits within a single package
• Features TTL-compatible input levels suitable for mixed-voltage system interfaces
• Provides active-low mutually exclusive outputs for precise signal decoding

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in microprocessor-based systems
• Memory chip select generation
• Demultiplexing data streams to multiple destinations

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify component authenticity through authorized Nexperia distributors or certified partners. Confirm that the specific part number matches the required AHCT series specifications rather than standard HC or HCT variants. Ensure packaging integrity remains intact during handling to prevent electrostatic discharge damage to the CMOS inputs.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-level compatibility is required alongside high-speed performance characteristics typical of the AHCT family. The dual-decoder configuration reduces board space compared to using separate single-decoder ICs. Verify that the 16-SOIC package dimensions align with the target PCB footprint constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the widely adopted 74-series logic family, specifically the Advanced High-CMOS Technology (AHCT) subset. The 74AHCT139 variant serves as a functional equivalent to other industry-standard dual decoders but offers improved switching speeds and lower power consumption compared to legacy HCT counterparts while maintaining pin compatibility.