LMC7221BIMX/NOPB

Overview

The LMC7221BIMX/NOPB is a single-channel analog comparator manufactured by Texas Instruments, housed in an SOIC-8 surface-mount package. It operates within a supply voltage range of 2.7 V to 15 V and consumes 14 µA of quiescent current. The device features rail-to-rail input capability with an input bias current of 0.4 pA and an input offset voltage of 5 mV. It provides an open-drain output type and exhibits a response time of 4 µs. Common-mode rejection ratio is specified at 75 dB, while power supply rejection ratio reaches 80 dB. The component functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Low-power operation with minimal quiescent current consumption suitable for battery-powered applications
• Rail-to-rail input stage allowing signal processing near supply rails
• Open-drain output configuration providing flexibility in interfacing with various logic families

Applications

• General-purpose voltage threshold detection circuits
• Battery monitoring systems requiring low standby current
• Industrial sensor interface modules

Procurement Notes

Verify the specific suffix designation against official Texas Instruments documentation to confirm pinout compatibility and electrical characteristics. Ensure the ordering part number matches the required package style and temperature grade. Cross-reference manufacturer datasheets for any recent product change notices affecting mechanical dimensions or material composition before finalizing procurement specifications.

Selection Notes

Select this component when a single comparator with rail-to-rail inputs and low power consumption is required. The open-drain output necessitates an external pull-up resistor for proper logic level generation. Consider the 4 µs propagation delay for timing-sensitive applications. Verify that the 15 V maximum supply voltage aligns with the system power architecture.

Part Context

This device belongs to the LMC7221 series of low-power high-voltage comparators. It serves as a single-channel variant within the family, distinct from dual-channel counterparts like the LMC6772. The series emphasizes low current draw while maintaining high voltage tolerance, making it suitable for general-purpose comparison tasks in industrial and consumer electronics.

Replacement Considerations

Consult official substitution guides for equivalent parts. Verify functional compatibility regarding output type and input specifications.