SN74AHCT139PW

Signal Switches, Multiplexers, Decoders Overview

The SN74AHCT139PW is a dual 2-to-4-line decoder and demultiplexer manufactured by Texas Instruments. It belongs to the AHCT logic series, designed for CMOS technology with TTL-compatible inputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and features a TSSOP-16 surface-mount package. Key electrical specifications include a propagation delay of 8.5 ns and an operating temperature range from -40°C to +85°C. The component integrates two independent decoding circuits in a single compact form factor.

Signal Switches, Multiplexers, Decoders Feature Summary

• Supports dual independent 2-to-4-line decoding functions
• Features TTL-compatible input levels for system integration
• Utilizes low-power CMOS technology

Signal Switches, Multiplexers, Decoders Applications

• Address decoding for memory and I/O mapping
• Demultiplexing data streams in digital systems
• Control signal distribution in industrial equipment

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the exact suffix against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure the ordering part number matches the required RoHS compliance status and moisture sensitivity level. Cross-reference the specific revision code to guarantee compatibility with existing PCB footprints and assembly processes.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-compatible logic levels are required alongside CMOS performance characteristics. The AHCT series provides a bridge between older TTL designs and modern low-voltage CMOS systems. Consider the 8.5 ns propagation delay for timing-critical applications within the specified voltage and temperature constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part is a member of the SN74AHCT family, which combines the benefits of high-speed CMOS operation with standard TTL input compatibility. It serves as a direct replacement for legacy HCT devices where lower power consumption is desired. The TSSOP-16 package offers a space-saving solution for dense circuit board layouts compared to traditional DIP packages.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHCT139PWRE4 is a verified equivalent variant from Texas Instruments with identical functional specifications.