LMC6772AIMX-NS

Overview

The LMC6772AIMX-NS is a dual micro-power rail-to-rail input CMOS comparator manufactured by National Semiconductor. It features an ultra-low power consumption profile with a maximum supply current of 10 µA per comparator. The device operates over a wide voltage range, supporting single supplies from 3V to 30V or dual supplies from ±1.5V to ±15V. It includes open-drain outputs and offers high-speed performance with a typical propagation delay of 400 ns at 5V.

Feature Summary

• Ultra-low power consumption with maximum 10 µA supply current per channel
• Rail-to-rail input capability allowing operation near ground and positive supply rails
• Open-drain output configuration for flexible interfacing
• Wide single-supply voltage range from 3V to 30V

Applications

• Battery-powered portable equipment requiring minimal quiescent current
• Threshold detection circuits in low-voltage systems
• Signal conditioning for microprocessor reset lines
• Window comparator applications in industrial monitoring

Procurement Notes

Verify the exact suffix (NS vs NOPB) against the manufacturer's current datasheet, as suffixes may indicate packaging or compliance variations that do not alter electrical function. Confirm RoHS status and lead-free availability through official Texas Instruments documentation, as National Semiconductor assets are now managed by TI. Ensure the order matches the specific package type (SOIC-8) required for your PCB layout.

Selection Notes

Select this component when system design demands extremely low standby current in battery-operated devices. The rail-to-rail input stage simplifies biasing requirements compared to standard comparators. Consider the open-drain output limitation if push-pull drive is necessary, requiring external pull-up resistors. Verify that the 400 ns propagation delay meets the timing constraints of the target application.

Part Context

This part belongs to the LMC6772 family of dual comparators designed for low-power analog signal processing. It serves as a bridge between analog sensors and digital logic interfaces in resource-constrained environments. The device leverages CMOS technology to achieve performance levels previously associated with higher-power bipolar comparators, making it suitable for modern miniaturized electronics.

Replacement Considerations

The LMC6772AIMX/NOPB is a confirmed equivalent part number from Texas Instruments, representing the same functional device with updated manufacturing standards. Verify pin compatibility and electrical specifications before substitution. Other dual comparators with similar low-power specs may require circuit redesign due to differences in input offset voltage or output drive capability.