8601401IA

Overview

The Texas Instruments LM119QML (8601401IA) is a high-speed dual comparator designed for radiation-tolerant environments. It operates from a single 5V logic supply or dual supplies up to ±15V, featuring an uncommitted open-collector output stage capable of driving loads up to 25mA. The device ensures performance under radiation exposure with a total dose rating of 100 krad(Si), ELDRS-free characteristics, and MIL-STD-883 Group 5 conformance. Key electrical parameters include a typical response time of 80ns at ±15V, input bias current of 0.47µA, and input offset voltage of ±3.8mV.

Feature Summary

• Radiation hardened design ensuring operation in high-dose rate environments up to 100 krad(Si) without enhanced low dose rate sensitivity.
• High-speed dual comparator architecture providing fast response times suitable for demanding signal processing applications.
• Versatile power supply compatibility allowing operation from single 5V logic levels to dual ±15V configurations.
• Open-collector output stage enables flexible interfacing with various logic families and direct drive capability for relays.

Applications

• Relay driver circuits requiring high-speed switching and isolation.
• Window detector configurations for monitoring signal levels within defined thresholds.
• Military and defense systems necessitating radiation tolerance and reliability.

Procurement Notes

Verify the specific ordering suffix and package variant against the required radiation qualification level. Confirm that the component meets MIL-STD-883 Group 5 requirements if specified for critical applications. Ensure proper handling procedures are followed due to limited built-in ESD protection mechanisms inherent to the device structure.

Selection Notes

Select this component when radiation hardness is mandatory alongside high-speed comparison capabilities. Consider the open-collector output limitations regarding pull-up requirements and voltage levels. Evaluate thermal dissipation constraints given the power dissipation limits in ceramic packages compared to standard plastic counterparts.

Part Context

This part belongs to the LM119QML family, which includes variants like 8601401CA and 8601401HA. These devices share the same monolithic chip fabrication but differ in packaging options such as CDIP, LCCC, and TO-100. The QML designation indicates qualification for military and space applications, distinguishing it from commercial grade equivalents.

Replacement Considerations

Direct replacements include other LM119QML variants with different package codes such as 8601401CA or 8601401HA, provided the pinout and radiation specifications match the system requirements.