MAX942AUA+

Comparators Overview

The MAX942AUA+ is a dual high-speed comparator from the MAX941/MAX942/MAX944 family, optimized for 3V and 5V single-supply systems. It features rail-to-rail inputs extending beyond supply rails and outputs that pull within 0.4V of either rail without external components. The device operates with a supply voltage range of 2.7V to 5.5V and an extended temperature range of -40°C to +125°C. Key electrical parameters include a propagation delay of 80ns (max), input offset voltage of 1mV (typical at 25°C), and supply current of 350µA per comparator.

Comparators Feature Summary

• Rail-to-rail input voltage range extending beyond both power-supply rails
• Internal hysteresis ensures clean output switching without external resistors
• CMOS and TTL-compatible outputs capable of pulling close to supply rails
• Continuous short-circuit fault tolerance on all input and output pins

Comparators Applications

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

Comparators Procurement Notes

Verify the specific suffix 'AUA+' indicates the -40°C to +125°C industrial/extended temperature grade and µMAX package. Confirm RoHS compliance status as indicated by the '+' suffix in official documentation. Ensure ordering specifications match the required tape-and-reel packaging format denoted by the 'T' suffix if applicable to the specific procurement variant.

Comparators Selection Notes

Select this component for applications requiring low-power operation in portable equipment powered by 3V or 5V supplies. The dual configuration is suitable where two independent comparison channels are needed in a compact footprint. Consider the internal hysteresis feature for noise immunity in slow-moving signal environments without adding external circuitry complexity.

Comparators Part Context

The MAX942AUA+ belongs to the MAX94x series of high-speed, low-power comparators manufactured by Analog Devices Inc./Maxim Integrated. This series includes single (MAX941), dual (MAX942), and quad (MAX944) variants sharing similar electrical characteristics but differing in channel count and pin configurations. The AUA+ designation specifically refers to the extended temperature version housed in the µMAX package.

Comparators Replacement Considerations

Direct substitutes within the same family include MAX942EUA-T for the -40°C to +85°C temperature range. Other variants like MAX942ESA offer the same electrical performance in an SO package.