LMC7221BIM5X

Overview

The LMC7221BIM5X is a single-channel analog comparator manufactured by Texas Instruments, housed in a SOT-23-5 surface-mount package. It operates on a supply voltage range of 2V to 8V with a typical quiescent current of 1µA. Key electrical specifications include an input offset voltage of 8mV, an input bias current of 0.05pA, and a common-mode rejection ratio of 80dB. The device features rail-to-rail inputs and an open-drain output, functioning within a temperature range of -40°C to +85°C.

Feature Summary

• Rail-to-rail input capability allows operation with input signals extending to the supply rails.
• Open-drain output configuration provides flexibility for interfacing with various logic families.
• Ultra-low power consumption enables extended battery life in portable applications.

Applications

• Battery-powered monitoring systems
• Threshold detection circuits
• Low-voltage signal conditioning

Procurement Notes

Verify the specific suffix 'BIM5X' against the official Texas Instruments datasheet to confirm pinout and electrical tolerances. Ensure the open-drain output requirement matches the system design, as this variant lacks a push-pull driver. Confirm RoHS compliance status through the manufacturer's current product change notices before finalizing procurement orders.

Selection Notes

Select this component when low supply voltage operation below 3V is required alongside minimal static current draw. The open-drain output necessitates an external pull-up resistor; ensure the selection accounts for this circuit topology. Compare input bias current specifications against other CMOS comparers if ultra-high impedance sensing is critical for the application.

Part Context

This part belongs to the LMC7221 family of tiny CMOS comparers from Texas Instruments. It shares functional similarities with the LMC7211 but differs in output stage architecture, utilizing an open-drain design instead of push-pull. The series is designed for general-purpose comparison tasks where space and power efficiency are primary constraints.

Replacement Considerations

Direct substitutes may include the LMC7221AIM5X/NOPB or LMC7221IM5X/NOPB, provided the open-drain output specification remains compatible with the target circuit design. Verify package compatibility and electrical parameter limits before substitution.