MAX6366HKA44+T

Overview

The MAX6366HKA44+T is a voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of up to 5.5 V and features an adjustable overvoltage threshold of 4.38 V with a fixed reset threshold of 4.38 V. The device provides an active low, open-drain output and includes a manual reset input. It incorporates a watchdog timer and battery backup switch functionality. The reset delay time is specified at 150 ms minimum. Operating current is 15 uA, and it functions reliably across a temperature range from -40°C to +85°C in an SOT-23-8 package.

Feature Summary

• Integrates a watchdog timer for system reliability monitoring
• Includes a manual reset input for controlled system recovery
• Supports battery backup switching for continuous operation during power transitions

Applications

• Microprocessor reset circuits requiring watchdog functionality
• Battery-powered systems needing backup switching support
• Industrial control systems operating in extended temperature ranges

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels due to potential availability constraints. Confirm package integrity and pin configuration match SOT-23-8 specifications before integration. Check for obsolescence status as this part may be discontinued or subject to limited supply conditions. Ensure compliance with RoHS directives if required for your specific application environment.

Selection Notes

Select this component when both overvoltage detection and standard reset supervision are required simultaneously. The adjustable overvoltage threshold allows customization for specific rail protection needs. Consider the open-drain output compatibility with downstream logic levels. Verify that the 150 ms reset delay meets system timing requirements during power-up sequences.

Part Context

This part belongs to the MAX6366 series of microprocessor supervisors designed for low-power applications. It combines multiple supervisory functions into a single compact package. The series is known for high accuracy and low quiescent current consumption. It serves as a critical component in ensuring system stability in embedded designs where power integrity is paramount.

Replacement Considerations

Public confirmed substitute part numbers: None identified.