LM111WLQMLV

Overview

The LM111WLQMLV is a radiation-hardened voltage comparator from the LM111QML-SP series, manufactured by Texas Instruments. It features a single element with open-collector output and operates on a single supply of 5V to 30V or dual supplies of ±2.5V to ±15V. The device ensures high dose rate tolerance up to 50 krad(Si) and maintains an input bias current of 200 nA maximum. It offers a propagation delay of 40ns and functions within a temperature range of -55°C to 125°C.

Feature Summary

• Radiation hardened design ensuring reliability in high-dose environments
• High speed-to-power combination optimized for efficient operation
• Open-collector output configuration for flexible interfacing

Applications

• Spacecraft avionics systems requiring radiation tolerance
• Military electronic equipment operating in harsh environments
• High-reliability industrial control comparators

Procurement Notes

Verify the specific suffix WLQMLV against the official LM111QML-SP datasheet to confirm radiation hardening specifications and package type. Ensure the procurement channel provides traceability documentation required for qualified components. Confirm that the delivered units match the exact part number designation to avoid substitution errors in critical applications.

Selection Notes

Select this component when radiation hardness is mandatory for the application environment. It is suitable for designs requiring low input bias current and fast response times under extreme temperature conditions. Consider the open-collector output requirement for interface compatibility with downstream logic circuits before finalizing the design.

Part Context

This part belongs to the LM111QML-SP family, which consists of radiation-hardened analog comparators. These devices are designed for space and military applications where standard commercial parts would fail due to ionizing radiation exposure. The LM111WLQMLV variant specifically meets the stringent qualification standards defined by the QML program.

Replacement Considerations

Direct replacements must be from the LM111QML-SP family with identical radiation qualification. Verify pinout compatibility and electrical parameters such as propagation delay and supply voltage range. Non-QML equivalents lack the necessary radiation tolerance and should not be used in verified replacement scenarios.