JM54AC240SRA-RH

Overview

The JM54AC240SRA-RH is a radiation-hardened octal bus buffer and inverter from the 54AC series, manufactured by National Semiconductor. It features high-speed CMOS technology designed for aerospace applications requiring resistance to total ionizing dose (TID), single event latch-up (SEL), and single event upset (SEU). The device operates within a voltage range of 2V to 6V and supports temperatures from -55°C to +125°C. It is housed in a ceramic hermetic package and holds QML-V qualification.

Feature Summary

• High radiation hardness against total ionizing dose, single event latch-up, and single event upset
• Ceramic hermetic packaging suitable for harsh environments
• QML-V qualified for demanding space conditions

Applications

• Aerospace systems requiring radiation tolerance
• Harsh environmental electronic circuits
• Spacecraft data bus interfaces

Procurement Notes

Verify that the specific suffix 'RHA' or 'RH' denotes the required radiation hardness level and QML-V qualification status as specified in the official datasheet. Confirm the package type matches the ceramic hermetic requirement for your application environment. Ensure the operating voltage and temperature ranges align with system specifications before procurement.

Selection Notes

Select this component when radiation hardness is critical for mission reliability. Compare against standard commercial 54AC240 variants if radiation tolerance is not required. Verify compatibility with existing bus protocols and ensure the ceramic package fits the mechanical constraints of the assembly.

Part Context

This part belongs to the 54AC/54ACT series of high-speed CMOS logic functions. These components are specifically engineered to meet stringent radiation requirements for the aerospace industry, offering robust performance in environments where standard commercial parts would fail due to ionizing radiation effects.

Replacement Considerations

Direct replacements must also be QML-V qualified and radiation-hardened. Standard commercial 54AC240 devices are not suitable substitutes due to lack of radiation tolerance. Consult the DLA website for approved alternatives within the same radiation-hardened family.