SN74S139AD

Signal Switches, Multiplexers, Decoders Overview

The SN74S139AD is a high-speed Schottky logic device manufactured by Texas Instruments. It integrates two independent 2-line to 4-line decoders or demultiplexers within a single 16-pin package. The component operates on a single power supply with a voltage range of 4.75V to 5.25V. It features Schottky clamping for high performance and standard input regulation. The device supports surface-mount installation in a SOIC-16 package, measuring 9.9mm in length, 3.91mm in width, and 1.58mm in height. It functions within an operating temperature range of 0°C to 70°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Integrates two independent 2-to-4 line decoding circuits
• Utilizes Schottky clamping technology for enhanced speed
• Supports dual functionality as decoder or demultiplexer

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in microprocessor systems
• Data routing in digital communication interfaces
• Memory chip selection logic

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm pinout compatibility and electrical characteristics. Ensure the procurement channel provides valid RoHS compliance certificates. Confirm that the package dimensions match the required PCB footprint specifications before finalizing orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when high switching speeds are required compared to standard TTL logic families. Verify that the system power supply strictly adheres to the 4.75V to 5.25V range to prevent malfunction. Consider the thermal dissipation capabilities of the SOIC package if multiple units are placed in close proximity on the board.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Texas Instruments 74S series, which represents the high-speed Schottky variant of the standard 7400 logic family. The 139 designation specifically identifies the dual 2-line to 4-line decoder/demultiplexer function within this hierarchy. It serves as a faster alternative to the LS series while maintaining compatible logic levels.