LM193AH/NOPB

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 power supply operation, with a wide voltage range of 2 V to 36 V. The device utilizes an 8-pin TO-99 metal can package and supports through-hole mounting. Key electrical specifications include a maximum input offset voltage of 2 mV, an input bias current of 100 nA, and a response time of 1.3 µs. It operates within a temperature range of -55°C to 125°C and draws a typical supply current of 500 µA.

Feature Summary

• Dual independent comparator architecture optimized for low power consumption
• Wide single-supply or dual-supply voltage compatibility
• Input common-mode voltage range includes ground potential
• Compatible with TTL, DTL, ECL, MOS, and CMOS logic families

Applications

• General purpose analog signal comparison circuits
• Temperature sensing and monitoring systems
• Over-voltage and under-voltage protection circuits
• Logic level shifting and interface applications

Procurement Notes

Verify the specific suffix 'AH' indicates the military-grade or high-reliability variant when sourcing. Confirm the 'NOPB' designation ensures lead-free compliance and RoHS adherence as per manufacturer standards. Ensure the procurement channel provides authentic Texas Instruments components to avoid counterfeit risks associated with specialized military-grade packages.

Selection Notes

Select this component when a hermetically sealed metal can package is required for harsh environments. The LM193AH/NOPB is suitable for designs needing low input offset voltage and ground-referenced input capabilities. Consider the TO-99-8 footprint constraints during PCB layout. Verify that the 1.3 µs propagation delay meets the system timing requirements compared to faster modern alternatives.

Part Context

This part belongs to the LM193/LM293/LM393 family of dual comparators. While many variants use plastic packages like SOIC or DIP, the LM193AH/NOPB specifically utilizes the TO-99-8 metal can package. This packaging style is typically reserved for aerospace, military, or high-reliability industrial applications requiring superior environmental sealing and thermal performance compared to standard plastic encapsulated devices.

Replacement Considerations

Direct pin-compatible replacements may include other LM193 variants in TO-99 packages, such as the LM193H. However, verify if the 'AH' suffix denotes specific military screening or extended temperature ranges not present in commercial equivalents. Plastic package versions like the LM393 require adapter solutions or redesign.