MAX973ESA+T

Comparators Overview

The MAX973ESA+T is a dual low-voltage comparator from the Analog Devices/MAXIM family, housed in an 8-pin SOIC package. It features an internal 1.182V ±1% precision voltage reference and programmable hysteresis via the HYST pin. Operating on single supplies from 2.5V to 11V or dual supplies of ±1.25V to ±5.5V, it draws less than 4µA supply current. The device provides open-drain outputs with a separate GND pin for level translation, ensuring compatibility with CMOS and TTL logic levels.

Comparators Feature Summary

• Integrates an internal 1.182V bandgap voltage reference with ±1% accuracy
• Features dedicated HYST pin for simple programmable hysteresis implementation without external feedback equations
• Open-drain outputs include a separate ground pin to facilitate bipolar-to-single-ended conversion and level shifting
• Ultra-low quiescent current consumption suitable for battery-powered applications

Comparators Applications

• Window detectors for undervoltage/overvoltage monitoring
• Battery switchover circuits replacing diode-based solutions
• Level shifters converting bipolar inputs to single-ended outputs
• Threshold detectors in portable electronic devices

Comparators Procurement Notes

Verify the specific suffix 'ESA' corresponds to the -40°C to +85°C extended temperature range and SOIC-8 package configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design accounts for the open-drain output requirement for pull-up resistors when interfacing with downstream logic circuits.

Comparators Selection Notes

Select this component when ultra-low power consumption is critical alongside precise threshold detection capabilities. The integrated reference eliminates the need for external voltage sources, simplifying board layout. Consider the dual-channel architecture if multiple independent comparison functions are required within a compact footprint compared to single-channel alternatives.

Comparators Part Context

This part belongs to the MAX971–MAX974 series of micropower comparators designed for low-voltage operation. The MAX973 specifically offers two comparators with an internal reference and hysteresis control. It complements the MAX971 (single channel) and MAX974 (quad channel) variants, providing a balanced solution for applications requiring moderate channel density with high precision reference features.

Comparators Replacement Considerations

The MAX983ESA serves as a direct functional substitute within the same package, differing only in the internal reference tolerance specification.