DM54S253W/883

Overview

The DM54S253W/883 is a high-speed Schottky dual 4-input multiplexer/demultiplexer manufactured by National Semiconductor. It features a wide-voltage operating range and robust noise immunity typical of the 54S series. The device supports both multiplexing and demultiplexing functions with independent selection controls for each channel.

Feature Summary

• Dual independent 4-to-1 multiplexer architecture
• High-speed Schottky TTL logic family performance
• Wide supply voltage tolerance for military specifications

Applications

• Military communication systems requiring radiation-hardened components
• Data routing in aerospace telemetry equipment
• High-reliability industrial control signal switching

Procurement Notes

Verify the authenticity of the /883 suffix, which indicates compliance with MIL-PRF-38534 standards. Confirm that the W package designation matches the required ceramic flatpack configuration. Ensure the manufacturer source is authorized to prevent counterfeit components in critical applications.

Selection Notes

Select this component when military-grade reliability and wide temperature operation are mandatory. Compare propagation delays against standard 54S variants if speed is critical. Verify pin compatibility with existing PCB layouts designed for ceramic flatpack packages.

Part Context

This part belongs to the National Semiconductor 54S series, designed for military and aerospace environments. It offers improved speed over standard TTL while maintaining compatibility with existing digital logic families. The /883 suffix denotes specific quality and screening requirements.

Replacement Considerations

Direct substitutes include other 54S253 variants from qualified manufacturers meeting MIL-PRF-38534 standards. Verify pinout and electrical characteristics before substitution. Generic commercial equivalents may not meet the required environmental or reliability specifications.