LM193AH

Overview

The LM193AH/NOPB is a dual low-power voltage comparator manufactured by Texas Instruments. It features two independent comparators designed for single or split supply operation within a wide voltage range of 2 V to 36 V. The device utilizes an 8-pin TO-99 metal can package and offers CMOS/TTL compatible outputs with a typical response time of 1.3 µs. Key electrical specifications include a maximum input offset voltage of 2 mV, an input bias current of 100 nA, and a supply current of 500 µA. It operates reliably across an extended temperature range from -55°C to 125°C.

Feature Summary

• Dual independent comparator architecture optimized for low power consumption
• Wide single-supply voltage range supporting operation from 2 V to 36 V
• CMOS and TTL logic compatible open-collector output configuration
• Extended industrial temperature rating suitable for harsh environments

Applications

• Precision threshold detection circuits
• Low voltage monitoring systems
• Industrial sensor signal conditioning

Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free compliance and RoHS adherence when sourcing. Confirm the 'H' designation corresponds to the military-grade temperature range (-55°C to 125°C) rather than commercial variants. Ensure the TO-99-8 through-hole package matches the target PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when high input impedance and low offset voltage are critical for accuracy in differential measurements. The TO-99 package provides superior thermal stability compared to plastic packages. Consider the 1.3 µs propagation delay against system timing requirements. Verify that the open-collector output interface aligns with the downstream logic family voltage levels.

Part Context

This part belongs to the LMx93 series of dual comparators, which includes the LM193, LM293, and LM393. These devices share a common functional core but differ in performance grades and environmental ratings. The LM193 variant specifically targets applications requiring extended temperature ranges and higher precision compared to standard commercial equivalents.

Replacement Considerations

LM193H: Functional equivalent without lead-free certification. LM293AH: Commercial grade version with limited temperature range. LM393AH: Standard commercial grade alternative.