MAX6344SUT+T

Overview

The MAX6344SUT+T is a single-channel microprocessor supervisory circuit in a 6-pin SOT-23 package. It monitors one input with an active-low, open-drain reset output and features a manual reset input. The device operates within a supply voltage range of +1V to +5.5V, with a specific reset threshold of 2.93V and a power-fail comparator threshold of 1.25V. It provides a fixed reset delay time of 100ms and consumes 3.3µA of quiescent current. The component supports operation across an extended temperature range from -40°C to +125°C.

Feature Summary

• Integrates a power-fail comparator for low-battery detection or secondary supply monitoring alongside primary voltage supervision.
• Includes a manual reset input pin allowing external control over the reset state generation.
• Delivers system reliability through factory-trimmed reset threshold voltages without requiring external components.

Applications

• Digital systems requiring critical power supply monitoring
• Low-battery detection circuits
• Secondary power supply supervision

Procurement Notes

Verify the exact suffix configuration against the manufacturer's official datasheet to ensure correct threshold voltage and package type. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region. Ensure the ordering part number matches the required electrical specifications before procurement.

Selection Notes

Select this component when a single monitored rail with manual reset capability is required. The integrated power-fail comparator makes it suitable for applications needing early warning of voltage drops below 1.25V. Verify that the 2.93V threshold aligns with the target supply voltage and that the open-drain output interface is compatible with the downstream logic levels.

Part Context

This device belongs to the MAX6342–MAX6345 family of µP supervisory circuits designed to improve system reliability compared to discrete solutions. These ICs provide factory-trimmed thresholds ranging from 2.33V to 4.63V. The MAX6344 variant specifically includes a manual reset input and an active-low push-pull or open-drain reset output depending on the suffix, operating between +1V and +5.5V.

Replacement Considerations

Check the MAX6344MUT+T for similar functionality in a 6-pin SOT-23 package. Verify if the MAX6344LUT+T offers the same threshold but with different output drive characteristics. Ensure any substitute maintains the 100ms reset delay and manual reset input requirement.