JM54AC377SRA-RH

Overview

The JM54AC377SRA-RH is a radiation-hardened octal D-type flip-flop belonging to the 54AC series. It features positive edge triggering and true outputs, manufactured using CMOS technology. The component is housed in a hermetic surface-mount package (5962R9098501SRA) designed for high-reliability aerospace applications. Key electrical parameters include an operating voltage range of 2V to 6V, a maximum operating frequency of 75MHz at nominal supply, and a propagation delay of approximately 16ns. It supports a load capacitance of 50pF and operates within a temperature range of -55°C to +125°C.

Feature Summary

• Radiation hardened against total ionizing dose and single event effects
• Hermetic ceramic packaging for extreme environmental stability
• High-speed CMOS logic with positive edge triggering

Applications

• Aerospace satellite data processing systems
• Spacecraft command and control logic
• Military avionics memory registers

Procurement Notes

Verify the specific manufacturer source, as National Semiconductor is now part of Texas Instruments. Confirm that the 'RH' suffix denotes the required radiation-hardened qualification level. Ensure the hermetic seal integrity meets military specifications. Check for availability of updated datasheets from TI or authorized distributors. Validate compliance with SMD specifications if required by the procurement contract.

Selection Notes

Select this component when radiation hardness is mandatory for space or high-altitude operations. The hermetic package provides superior protection against moisture and contaminants compared to standard plastic packages. Consider the 2V to 6V operating range for flexibility in power supply design. Evaluate the 75MHz speed limit against system clock requirements. Compare against other 54AC series parts for pin compatibility if upgrading existing designs.

Part Context

This part belongs to the 54AC family of high-speed CMOS logic functions. The 54AC series is known for wide voltage operation and low power consumption. The JM prefix typically indicates a military/radiation-hardened variant. The 54AC377 specifically implements octal D-flip-flops with transparent latch behavior on the clock edge. This family is widely used in digital signal processing and memory interfaces where reliability is critical.

Replacement Considerations

JM54AC377SRA-RH

FAQ

What is the radiation tolerance of this component?

It is radiation hardened, designed to withstand total ionizing dose and single event upset effects typical in space environments.

Does it have 3-state outputs?

No, the 54AC377 provides true outputs without 3-state capability; the 54AC374 is the 3-state variant.