MAX6359RVUT

Overview

The MAX6359RVUT is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors two independent power-supply voltages and asserts an active-low, push-pull reset output when either input drops below its preset threshold. The device features a manual reset input and a watchdog timer with a 46.4s startup timeout and a 2.9s timeout period. It operates within a supply voltage range of 1.0V to 5.5V, consumes 20µA of supply current, and offers 1.5% accuracy. The component is housed in a SOT-23-6 package and functions over an extended temperature range of -40°C to +85°C.

Feature Summary

• Monitors two independent power-supply voltages with precision factory-set thresholds
• Includes a watchdog timer with specified startup and operating timeout periods
• Features an active-low, debounced manual reset input compatible with TTL/CMOS logic

Applications

• Microprocessor system power monitoring
• Battery-powered equipment supervision
• Portable instrumentation voltage tracking

Procurement Notes

Verify the specific suffix RVUT against official datasheets to confirm exact threshold voltages and package variations. Confirm availability status as distribution channels may list limited stock or end-of-life conditions for specific Maxim Integrated part numbers. Ensure compatibility with existing PCB footprints and thermal requirements before procurement.

Selection Notes

Select this component when dual-rail supervision is required within a compact SOT-23-6 footprint. Consider the 20µA quiescent current for battery-sensitive designs. Verify that the internal watchdog timeout periods align with system software response times. Ensure the monitored voltage levels fall within the device's operational range and threshold capabilities.

Part Context

The MAX6359 belongs to the MAX635x series of dual/triple-voltage supervisory circuits designed to improve system reliability. These devices replace discrete components by integrating multiple reset functions into a single IC. The series is characterized by high accuracy and low power consumption, making it suitable for space-constrained embedded applications requiring robust power management.

FAQ

What are the watchdog timer timeout specifications?

The MAX6359 includes a watchdog timer with a 46.4-second startup timeout period and a 2.9-second operating timeout period.

How does the manual reset input function?

The device features a debounced manual reset input that is compatible with TTL and CMOS logic levels, allowing external assertion of the reset state.