DM9321J/883

Overview

The DM9321J/883 is a BCD-to-decimal decoder and driver manufactured by National Semiconductor. It operates on a standard TTL logic family with a nominal supply voltage of 5 V. The device is housed in a 16-pin ceramic dual in-line package (DIP). It supports an operating temperature range from -55 °C to 125 °C. Maximum power supply current is 44 mA, with a propagation delay of 30 ns at nominal supply. The unit is screened to MIL-STD-883B standards.

Feature Summary

• Provides one decimal decoding function for BCD inputs.
• Utilizes a ceramic DIP housing for durability.
• Supports extended industrial temperature ranges.

Applications

• Military electronic systems requiring high reliability
• Aerospace control units
• Industrial instrumentation

Procurement Notes

Verify the specific screening level required for your application, as this component is available under various military qualification standards such as 38535Q/M or 38534H. Confirm that the ceramic package and lead finish meet your assembly specifications. Ensure compatibility with existing TTL logic levels in your circuit design before procurement.

Selection Notes

Select this component when a robust, hermetically sealed BCD-to-decimal decoder is needed for harsh environments. The ceramic package offers superior thermal and mechanical stability compared to plastic alternatives. Consider the 5V TTL interface requirements and the specific screening grade necessary for your mission profile.

Part Context

This part belongs to the 93 series of standard TTL logic devices produced by National Semiconductor. The 'J' suffix indicates a military-grade version, while '/883' denotes compliance with MIL-STD-883 testing standards. These components are designed for high-reliability applications where performance consistency is critical.

Replacement Considerations

Check for direct equivalents within the 93 series logic family. Verify pinout compatibility and electrical parameters such as propagation delay and supply current. Ensure any substitute meets the same MIL-STD-883 screening requirements if used in qualified systems.