MAX6358TYUT

Overview

The MAX6358TYUT is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices/Maxim Integrated. It monitors two separate voltage supplies with factory-set thresholds of 3.08V for VCC1 and 2.19V for VCC2. The device features an active-low, open-drain reset output referenced to VCC1. It includes a debounced manual reset input and a watchdog timer with a 46.4s startup timeout and a 2.9s normal timeout period. The IC operates within an extended temperature range of -40°C to +85°C and is housed in a SOT-23-6 package.

Feature Summary

• Dual-channel power supply monitoring with precise factory-set thresholds
• Integrated watchdog timer with defined startup and normal timeout periods
• Debounced manual reset input compatible with TTL/CMOS logic levels

Applications

• Microprocessor system power supervision
• Multi-voltage embedded controller reset management
• Watchdog timer implementation in industrial control units

Procurement Notes

Verify the specific suffix TYUT against the official datasheet to confirm threshold voltages and package type. Confirm availability status as distribution channels may list obsolete or discontinued variants. Ensure the sourcing document explicitly references Analog Devices or Maxim Integrated specifications rather than generic distributor descriptions.

Selection Notes

Select this component when dual independent voltage rails require simultaneous supervision. The open-drain output suits systems needing wired-OR configurations. Verify that the 3.08V and 2.19V thresholds align with the target supply rails. Ensure the application requires the specific watchdog timing characteristics provided by this variant.

Part Context

This part belongs to the MAX6351–MAX6360 series of microprocessor supervisors designed to improve system reliability. Unlike discrete solutions, these ICs integrate multiple reset functions into a compact footprint. The series supports various threshold combinations and package options to accommodate diverse multi-rail power architectures.

Replacement Considerations

Check the MAX6358LTUT+T for similar dual-voltage supervision capabilities. Verify pin compatibility and electrical parameters before substitution. Ensure the alternative maintains the required watchdog functionality and threshold accuracy.