MAX971CUA+

Comparators Overview

The MAX971CUA+ is a single-channel, ultra-low-power analog comparator housed in an 8-pin µMAX package. It operates from a single supply voltage ranging from 2.5V to 11V or dual supplies of ±1.25V to ±5.5V. The device features an internal 1.182V precision voltage reference with ±1% accuracy and includes programmable hysteresis via the HYST pin. It draws a maximum quiescent current of 4µA over temperature and provides open-drain outputs capable of wire-OR configurations. The input common-mode range extends from the negative rail to within 1.3V of the positive rail, supporting level translation and threshold detection applications.

Comparators Feature Summary

• Ultra-low power consumption with maximum quiescent current of 4µA
• Integrated 1.182V precision bandgap voltage reference
• Programmable hysteresis using external resistors on the HYST pin
• Open-drain output stage suitable for wire-ORed logic configurations

Comparators Applications

• Battery-powered systems requiring minimal standby current
• Threshold detectors and window comparators
• Level translators between different voltage domains
• Oscillator circuits utilizing precise timing references

Comparators Procurement Notes

Verify the specific suffix 'CUA+' corresponds to the commercial temperature range (0°C to +70°C) and the µMAX package type as documented in the official Analog Devices ordering information. Confirm RoHS compliance status through the manufacturer's latest certification documents before integration into production designs.

Comparators Selection Notes

Select this component when designing low-voltage single-supply systems where power conservation is critical. Ensure the application requires an open-drain output interface compatible with the specified pull-up requirements. Verify that the required hysteresis levels can be achieved using the available REF pin current sourcing capabilities and external resistor networks.

Comparators Part Context

This part belongs to the MAX971–MAX974 family of micropower comparators manufactured by Analog Devices Inc./Maxim Integrated. The family shares architectural similarities including low supply current and internal references, but varies in channel count and package options. The MAX971 specifically denotes the single-channel variant within this series.

Comparators Replacement Considerations

Publicly confirmed substitute part numbers are not identified in the provided documentation.