MAX933CPA+

Comparators Overview

The MAX933CPA+ is a dual micropower, low-voltage analog comparator housed in an 8-pin Plastic DIP package. It operates from a single +2.5V to +11V supply or a ±1.25V to ±5.5V dual supply. The device features two comparators with TTL/CMOS outputs that sink and source current, including a continuous source capability of up to 40mA. It integrates an internal 1.182V ±2% bandgap voltage reference and offers programmable hysteresis via the HYST pin. Typical propagation delay is 12µs at 10mV overdrive, with a maximum quiescent supply current of 6µA.

Comparators Feature Summary

• Integrates an internal 1.182V ±2% accurate bandgap voltage reference for simplified circuit design.
• Features a unique output stage capable of continuously sourcing up to 40mA while eliminating crowbar switching currents during transitions.
• Provides simple programmable hysteresis implementation using the dedicated HYST pin and external resistors without complex feedback equations.
• Delivers TTL- and CMOS-compatible outputs that swing from the positive supply rail to the negative supply rail.

Comparators Applications

• Window Comparators
• Threshold Detectors
• Battery-Powered Systems

Comparators Procurement Notes

Verify the specific suffix 'CPA+' indicates the commercial temperature range (0°C to +70°C) and PDIP-8 packaging. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check for obsolescence notices or product change notifications as this component belongs to a legacy Maxim Integrated family now under Analog Devices.

Comparators Selection Notes

Select the MAX933CPA+ when dual comparator functionality with an integrated reference is required for low-power applications. Ensure the input signal range stays within V- to (V+ - 1.3V). Verify that the 40mA source current meets load requirements. Consider the MAX932EPA if extended temperature operation (-40°C to +85°C) is necessary instead of the commercial grade CPA variant.

Comparators Part Context

The MAX933CPA+ belongs to the MAX931-MAX934 family of ultra-low-power comparators. This series is designed for battery-powered systems requiring minimal quiescent current. The MAX933 specifically provides two comparators per package, distinguishing it from the single-channel MAX931 and quad-channel MAX934. It shares pinouts with the higher-precision MAX92x series but utilizes a 2% reference.

Comparators Replacement Considerations

The MAX933EPA serves as the extended temperature range equivalent. The MAX923CPA+ is a pin-compatible alternative offering 1% reference precision. Cross-reference datasheets to verify electrical parameter compatibility before substitution.