JM54AC157SFA-RH

Overview

The JM54AC157SFA-RH is a high-speed CMOS quad 2-input multiplexer manufactured by National Semiconductor. It operates within a voltage range of 2 V to 6 V and supports data rates up to 80 MHz. The device features low power consumption, immunity from single-event latch-up (SEL) and single-event upset (SEU), and radiation hardness of 300 krad (Si). It is housed in a hermetic ceramic flatpack package suitable for extreme environmental conditions.

Feature Summary

• Radiation-hardened design with 300 krad (Si) total ionizing dose tolerance
• Immunity to single-event latch-up and single-event upset
• Hermetic ceramic packaging for harsh environment reliability

Applications

• Aerospace satellite communication systems
• Military avionics signal routing
• Spacecraft telemetry data selection

Procurement Notes

Verify the specific suffix 'R-H' indicates the required radiation hardening qualification level. Confirm that the hermetic ceramic flatpack package meets the mechanical constraints of the target assembly. Ensure the operating voltage range aligns with the system's power supply specifications.

Selection Notes

Select this component when radiation tolerance and SEL immunity are critical requirements. Compare against standard commercial AC series parts if environmental conditions do not require hermetic sealing or radiation hardness. Verify pinout compatibility with existing PCB layouts designed for similar multiplexer families.

Part Context

This part belongs to the 54ACxxxx series of high-speed CMOS functions designed for aerospace applications. It provides quad 2-channel multiplexing capabilities within a robust hermetic package. The series includes various logic functions tailored for difficult environmental conditions requiring high reliability.

Replacement Considerations

Direct replacements include other National Semiconductor or Texas Instruments radiation-hardened 54AC157 variants with matching hermetic packages. Verify equivalent radiation hardness ratings and SEL immunity levels before substitution.