LMC7221AIM5X

Overview

The LMC7221AIM5X is a micropower CMOS analog comparator from Texas Instruments, housed in a space-saving 5-pin SOT-23 package. It features rail-to-rail input capability and an open-drain output configuration. The device operates on a single supply voltage ranging from 2.7 V to 15 V. Key electrical specifications include a maximum propagation delay of 4 µs, a quiescent supply current of 14 µA, and an input offset voltage of 5 mV. It supports a common-mode rejection ratio (CMRR) of 75 dB and a power supply rejection ratio (PSRR) of 80 dB. The component functions within a temperature range of -40°C to +85°C.

Feature Summary

• Rail-to-rail input stage enables accurate signal comparison across the full supply voltage range.
• Open-drain output allows flexible interfacing with various logic families and voltage levels.
• Micropower design ensures low static current consumption for battery-operated applications.

Applications

• General-purpose analog signal comparison
• Threshold detection circuits
• Voltage monitoring systems

Procurement Notes

Verify the specific suffix 'X' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation. Check current lifecycle status as components may be subject to end-of-life notices. Ensure the open-drain output requirement matches the target circuit design before procurement.

Selection Notes

Select this component when rail-to-rail input compatibility is required in a compact SOT-23 footprint. The open-drain output necessitates an external pull-up resistor; ensure the selected resistor value aligns with the desired switching speed and load requirements. Verify that the 4 µs propagation delay meets the timing constraints of the application.

Part Context

This part belongs to the LMC7221 series of tiny CMOS comparators. It shares functional similarities with the LMC7221AIM5 but differs in packaging format, with the 'X' suffix denoting reel-based distribution. It serves as a low-power alternative to bipolar comparators in portable electronics.

Replacement Considerations

The LMC7221AIM5/NOPB is a pin-compatible variant available in cut-tape or tube formats. Verify if the packaging difference impacts assembly processes. No direct functional substitutes are listed in the provided data.