DM54S139J/883

Overview

The DM54S139J/883 is a high-speed Schottky TTL decoder/driver manufactured by National Semiconductor. It features a single 2-to-4 line decoder configuration housed in a 16-pin ceramic dual in-line package (CDIP). The device operates asynchronously with open-collector outputs, allowing for flexible interfacing and wired-logic capabilities. Designed for military-grade reliability, it supports a wide operating temperature range from -55°C to 125°C and functions at a standard 5V supply voltage.

Feature Summary

• High-speed Schottky TTL logic family implementation
• Single 2-to-4 line decoding architecture
• Open-collector output structure for versatile load driving
• Military-grade ceramic packaging for harsh environment resilience

Applications

• Address decoding in military computing systems
• Signal routing and demultiplexing in avionics
• Control logic interfaces requiring open-drain compatibility
• High-reliability data path selection circuits

Procurement Notes

Verify the authenticity of the National Semiconductor or Texas Instruments marking on the ceramic package. Confirm the presence of the J/883 suffix indicating compliance with MIL-STD-883 standards. Check for physical damage to the ceramic body and lead integrity. Ensure the component matches the specific S-TTL series designation rather than generic variants.

Selection Notes

Select this component when a ruggedized, high-speed 2-to-4 decoder is required for aerospace or defense applications. The open-collector outputs necessitate external pull-up resistors tailored to the system voltage levels. Consider the thermal management requirements associated with the 125°C maximum junction temperature limit in enclosed military enclosures.

Part Context

This part belongs to the DM54S series, representing National Semiconductor's high-performance Schottky TTL line. The J/883 suffix denotes a hermetically sealed ceramic package qualified under MIL-STD-883, distinguishing it from commercial plastic-packaged equivalents. It serves as a critical interface element in legacy and specialized military electronic architectures.

Replacement Considerations

Direct replacements include other MIL-qualified 2-to-4 decoders from the same manufacturer's military catalog. Verify pinout compatibility before substituting with equivalent parts from other vendors offering MIL-STD-883 certified Schottky TTL devices.