MAX6344MUT+T

Overview

The MAX6344MUT+T is a microprocessor supervisory circuit in a 6-pin SOT-23 package. It monitors power supplies with a factory-trimmed reset threshold voltage of 4.38V and operates within a supply range of +1V to +5.5V. The device features an active-low push-pull reset output and includes a +1.25V threshold detector for power-fail warnings or low-battery detection. It functions across an extended temperature range from -40°C to +125°C.

Feature Summary

• Provides system reliability through accurate monitoring of digital system power supplies
• Integrates a dedicated power-fail comparator for detecting voltage anomalies
• Delivers a deterministic active-low push-pull reset signal upon power-up

Applications

• Microprocessor power supply supervision
• Low-battery detection circuits
• Power-fail warning generation

Procurement Notes

Verify the specific suffix 'MUT' against the manufacturer's current datasheet to confirm pinout and electrical characteristics. Ensure compliance with RoHS directives if required, as legacy documentation may indicate leaded variants. Confirm availability status directly with Analog Devices or authorized distributors due to potential lifecycle changes.

Selection Notes

Select this component when a fixed 4.38V reset threshold is required for systems operating between 1V and 5.5V. The integrated power-fail comparator distinguishes it from basic reset generators. Consider the SOT-23-6 package size for space-constrained designs requiring both reset and power-fail functionality without external components.

Part Context

This part belongs to the MAX6342–MAX6345 family of µP supervisory circuits designed to improve system accuracy compared to discrete solutions. These devices offer factory-trimmed thresholds ranging from 2.33V to 4.63V. The MAX6344 specifically provides the 4.38V threshold variant within this lineup.

Replacement Considerations

Cross-reference with MAX6344MUT for non-RoHS versions or other family members like MAX6343 if manual reset inputs are needed. Verify that substitute parts maintain the same 4.38V threshold and SOT-23-6 footprint.