JM54AC257SFA-RH

Overview

The JM54AC257SFA-RH is a quad 2-input multiplexer manufactured by National Semiconductor. It features TRI-STATE outputs for bus-oriented systems. The device operates within the standard AC logic family specifications, providing high-speed switching capabilities. It is housed in a 16-CFlatpack package, suitable for military and aerospace applications requiring radiation hardness.

Feature Summary

• Quad configuration with two inputs per multiplexer channel
• TRI-STATE output capability for efficient bus sharing
• Radiation-hardened design for reliable operation in harsh environments

Applications

• Military communication systems
• Aerospace data routing
• High-reliability industrial control interfaces

Procurement Notes

Verify the manufacturer date code and lot traceability to ensure compliance with specific project requirements. Confirm that the 16-CFlatpack package matches the PCB footprint exactly. Request the full datasheet to validate electrical characteristics against system constraints before finalizing the purchase order.

Selection Notes

Select this component when a quad multiplexer with TRI-STATE outputs is required for radiation-tolerant applications. Ensure the input voltage levels align with the AC logic family standards. Consider the 16-CFlatpack form factor for space-constrained military or aerospace board designs.

Part Context

This part belongs to the 54AC series of logic devices, which are designed for high-speed digital applications. The 'JM' prefix typically indicates a military-grade variant, while 'RH' often denotes radiation hardening. It serves as a signal routing solution in critical infrastructure where standard commercial parts may fail due to environmental stressors.

Replacement Considerations

Direct substitutes include other radiation-hardened quad 2-input multiplexers from the same manufacturer family. Verify pin compatibility and electrical parameters before swapping. Generic AC logic equivalents lack the necessary radiation tolerance for this specific application context.