MAX942MSA/PR-T

Comparators Overview

The MAX942MSA/PR-T is a dual high-speed comparator optimized for single-supply operation from 2.7V to 5.5V. It features rail-to-rail input voltage range extending beyond supply rails and outputs that pull within 0.4V of either rail without external pullup circuitry. The device offers an 80ns propagation delay at 5mV overdrive, low 350µA supply current per comparator, and internal hysteresis for clean switching. It operates in the -55°C to +125°C temperature range and is housed in an 8-pin SO package.

Comparators Feature Summary

• Rail-to-rail input voltage range extending beyond power-supply rails
• Internal hysteresis ensures clean output switching with slow-moving signals
• Outputs swing within 0.4V of power rails without external pullup circuitry
• CMOS and TTL logic compatible outputs

Comparators Applications

• Threshold detectors and discriminators
• Line receivers
• Zero-crossing detectors
• Sampling circuits

Comparators Procurement Notes

Verify the specific suffix PR-T corresponds to tape and reel packaging as indicated by the T designation in official documentation. Confirm the extended industrial temperature range (-55°C to +125°C) matches the MSA variant requirements. Ensure compatibility with existing board layouts for the 8-pin SO package footprint.

Comparators Selection Notes

Select this component when dual comparators are required in a compact surface-mount form factor. It is suitable for applications demanding rail-to-rail input capability and fast response times under low-voltage single-supply conditions. Consider the internal hysteresis feature if external noise filtering components are undesirable.

Comparators Part Context

This part belongs to the MAX94x family of high-speed, low-power comparators manufactured by Maxim Integrated (now Analog Devices Inc.). The family includes single (MAX941), dual (MAX942), and quad (MAX944) variants designed for portable equipment and battery-powered systems requiring efficient power consumption and wide input voltage ranges.

Comparators Replacement Considerations

Direct substitutes within the same series include MAX942CPA, MAX942CSA, MAX942EPA, and MAX942ESA, which share the dual comparator functionality but differ in operating temperature ranges.