MAX6359RVUT+T

Overview

The MAX6359RVUT+T is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors two input supply voltages with factory-set thresholds of 3.08 V and 4.63 V. The device features an active-low, push-pull reset output referenced to VCC1 and includes a manual reset input. It incorporates a watchdog timer with a 46.4 s startup timeout and a 2.9 s normal timeout. Operating from 1.2 V to 5.5 V, it draws 20 µA of supply current and provides a minimum 100 ms power-on reset pulse width. The component operates within an extended temperature range of -40°C to +85°C.

Feature Summary

• Monitors multiple power-supply voltages with precision factory-set reset thresholds
• Includes a watchdog timer with defined startup and normal timeout periods
• Features a debounced manual reset input compatible with TTL/CMOS logic

Applications

• Embedded systems requiring multi-rail power supervision
• Industrial control units needing reliable voltage monitoring
• Communication equipment utilizing multiple voltage domains

Procurement Notes

Verify the specific suffix RVUT against the manufacturer's official datasheet to confirm pinout compatibility and threshold levels. Ensure the package type matches the target PCB footprint. Confirm RoHS compliance status through authorized distributors. Check for obsolescence notices or lifecycle changes directly from Analog Devices documentation before finalizing procurement plans.

Selection Notes

Select this component when precise monitoring of two distinct voltage rails is required without external resistors. The integrated watchdog timer simplifies firmware design for system stability. Consider the SOT-23-6 package constraints for space-limited designs. Verify that the 3.08 V and 4.63 V thresholds align with the specific power rails in the application design.

Part Context

This part belongs to the MAX6351–MAX6360 series of dual/triple-voltage microprocessor supervisors. These devices improve system reliability compared to discrete solutions by integrating multiple reset functions into a single IC. The series offers various threshold combinations and package options to accommodate different multi-voltage system architectures.

Replacement Considerations

Cross-reference with other MAX6359 variants having identical electrical specifications and pinouts. Verify that any substitute maintains the same SOT-23-6 package and threshold values.