DM54S257J-MIL

Overview

The DM54S257J-MIL is a quad 2-input data selector/multiplexer manufactured by National Semiconductor. It operates on a single 5 V supply with a range of 4.5 V to 5.5 V. The device features a 16-pin ceramic dual in-line package (CDIP) designed for military specifications. It supports an operating temperature range from -55°C to 125°C and utilizes TTL logic levels.

Feature Summary

• Quad 2:1 multiplexing capability
• Military-grade ceramic packaging
• Extended temperature operation

Applications

• Military avionics signal routing
• Harsh environment data selection
• High-reliability industrial control systems

Procurement Notes

Verify the MIL-STD-883 Class B screening status and ceramic package integrity upon receipt. Confirm the part number suffix matches the specific military qualification requirements. Ensure storage conditions maintain the specified temperature limits to prevent degradation of the glass-sealed ceramic structure before installation.

Selection Notes

Select this component when high reliability and radiation hardness are required in extreme thermal environments. The CDIP package provides superior hermetic sealing compared to plastic alternatives. Verify that the system voltage aligns with the 4.5 V to 5.5 V operational range and that the TTL input thresholds are compatible with the driving circuitry.

Part Context

This part belongs to the National Semiconductor S-Series TTL logic family, specifically designed for military applications. It serves as a robust alternative to commercial-grade multiplexers, offering enhanced durability and performance stability under severe mechanical and thermal stress conditions typical in defense and aerospace sectors.

Replacement Considerations

DM54S257J