LM119WGRLQMLV

Overview

The LM119WGRLQMLV is a high-speed dual comparator manufactured by Texas Instruments, designed for precision applications in harsh environments. It operates from a single 5V logic supply or dual supplies up to ±15V. The device features radiation tolerance of 100 krad(Si) with ELDRS-free characteristics. It includes two independent comparators on a monolithic chip, offering higher gain and lower input currents than older devices like the LM710. The uncommitted collector output stage allows compatibility with RTL, DTL, and TTL logic families.

Feature Summary

• Radiation tolerant design ensuring operation in high-dose rate environments up to 100 krad(Si) without enhanced low dose rate sensitivity
• High-speed performance with typically 80 ns response time at ±15V supply voltage
• Wide operating voltage range supporting single 5V logic supplies or dual supplies up to ±15V
• Uncommitted collector output capable of driving lamps and relays directly

Applications

• Relay driver circuits requiring direct load driving capability
• Window detector configurations for voltage monitoring
• Digital logic power supply supervision systems
• Harsh environment instrumentation utilizing radiation-hardened components

Procurement Notes

Verify that the specific ordering suffix matches the required radiation qualification (ELDRS-free vs. High Dose Rate). Confirm the package type corresponds to the CFP variant indicated by the model designation. Ensure procurement channels provide documentation confirming QML certification status for military or space-grade compliance requirements.

Selection Notes

Select this component when radiation hardness is mandatory for the application environment. Compare against standard commercial comparators if environmental constraints allow, as this device offers superior speed over legacy parts like the LM111. Consider the thermal resistance characteristics of the ceramic package during PCB layout planning to ensure junction temperature limits are not exceeded under maximum power dissipation conditions.

Part Context

This part belongs to the LM119QML family of high-speed dual comparators produced by Texas Instruments. It is specifically qualified under Military standards for defense and aerospace applications. The device represents an evolution of the classic LM119 architecture, retaining the core functional benefits while adding robust radiation hardening capabilities suitable for satellite and military avionics systems.

Replacement Considerations

LM119WGRQMLV serves as a verified substitute within the same product family.