100355W-QMLV

Overview

The LM139AxLQMLV is a quad comparator manufactured by National Semiconductor, designed for high-reliability applications. It is characterized as ELDRS-free, ensuring robust performance in radiation environments. The component undergoes Single Event Transient (SET) testing using heavy ions 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, validating its transient response stability.

Feature Summary

• ELDRS-free construction for enhanced radiation hardness
• Validated Single Event Transient (SET) response characteristics
• Quad comparator architecture

Applications

• Radiation-hardened electronic systems
• Spacecraft instrumentation
• High-reliability signal processing

Procurement Notes

Verify the specific revision and qualification status of the LM139AxLQMLV against current National Semiconductor or onsemi documentation. Confirm that the ELDRS-free designation and SET performance data match the required environmental specifications for the target application. Ensure compatibility with existing system interfaces and power requirements before integration.

Selection Notes

Select this component when radiation hardness and single-event transient immunity are critical design constraints. The ELDRS-free feature eliminates the need for additional mitigation strategies for latch-up in certain environments. Evaluate the quad comparator configuration against system channel requirements to ensure optimal board space utilization and signal integrity.

Part Context

This part belongs to the LM139 family of quad comparators. The LQMLV suffix indicates a specific qualification level, likely related to military or aerospace standards. National Semiconductor's comparator line is known for precision and reliability, with this variant specifically engineered to withstand harsh radiation conditions without degradation in performance.

Replacement Considerations

Consult official substitution guides for equivalent ELDRS-free quad comparators. Verify pinout compatibility and electrical parameter alignment with potential replacements. Ensure any substitute maintains the same radiation hardness level and SET response characteristics.