MAX6363HUT46

Overview

The MAX6363HUT46 is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 1.2V to 5.5V and features a fixed reset threshold voltage of 4.63V with ±2.5% accuracy. The device provides an active-low, push-pull RESET output that remains valid down to VCC = 1.2V. It includes a manual reset input (MR) for system control and supports battery backup switching. The circuit draws only 15µA of quiescent current and is available in a compact SOT-23-6 package, suitable for space-constrained applications.

Feature Summary

• Integrates a windowed watchdog timer to monitor processor activity and detect software failures.
• Includes a manual reset input allowing external assertion of the reset signal for system initialization.
• Features a battery backup switch to seamlessly transition between main power and backup sources.
• Provides a guaranteed active-low push-pull reset output valid from 1.2V up to the supply voltage.

Applications

• Microprocessor power supply monitoring in embedded systems
• Battery-powered devices requiring seamless backup power switching
• Industrial control systems needing watchdog timer functionality
• Portable electronics with strict space and power constraints

Procurement Notes

Verify the exact suffix configuration against the official datasheet to ensure correct threshold voltage and package type. Confirm RoHS compliance status as indicated in the manufacturer's documentation. Check availability status through authorized distributors, as lead times may vary. Ensure the ordering part number matches the specific variant required for your application design.

Selection Notes

Select this component when a fixed 4.63V threshold is required for high-voltage rail monitoring. Consider the push-pull output capability if driving loads directly without additional pull-up resistors. Evaluate the 15µA quiescent current against system power budgets. Verify compatibility with the system's manual reset logic and battery backup requirements before integration.

Part Context

This part belongs to the MAX6363 series of low-power µP supervisory circuits. It is designed for digital systems requiring reliable power management and processor oversight. The series offers various threshold options and output configurations to suit different application needs while maintaining a small footprint and low power consumption profile.

Replacement Considerations

Consult the official cross-reference list for direct replacements. Ensure substitute parts match the SOT-23-6 package, 4.63V threshold, and push-pull output characteristics. Verify equivalent watchdog and manual reset functionality before substitution.