100336W-QMLV

Overview

The LM139AxLQMLV is an ELDRS-free quad comparator from National Semiconductor, designed for radiation-hardened applications. It exhibits Single Event Transient (SET) response characteristics validated through heavy ion testing with Linear Energy Transfer (LET) values ranging from 11.5 to 84 MeV-cm2/mg. Experimental data confirms that SET pulsewidths measured at low LETs align closely with previous localized beam measurements, ensuring reliable transient performance in high-radiation environments.

Feature Summary

• ELDRS-free design ensures stable operation under radiation exposure without enhanced low-dose rate sensitivity effects.

Applications

• Radiation-hardened electronic systems requiring single event transient immunity.

Procurement Notes

Verify the specific part marking and datasheet revision against National Semiconductor or Texas Instruments official documentation to confirm ELDRS-free status and radiation test results. Ensure the component matches the LM139AxLQMLV designation for verified SET performance data.

Selection Notes

Select this component when radiation hardness and single event transient immunity are critical requirements. The ELDRS-free characteristic distinguishes it from standard comparators in nuclear or space environments where dose-rate effects may compromise functionality.

Part Context

This component belongs to the LM139 family of quad comparators. The LQMLV suffix indicates a qualified military/lead-free variant with specific radiation hardening features, including ELDRS mitigation, as documented in IEEE Radiation Effects Data Workshop publications.

Replacement Considerations

Substitutes must also be ELDRS-free and possess verified SET response data. Standard LM139 variants lack radiation hardening and are not suitable replacements for this specific application context.