MAX6358LSUT-T

Overview

The MAX6358LSUT-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 2.93V and 4.63V. The device features an active-low, open-drain reset output referenced to VCC1 and includes a manual reset input. It incorporates a watchdog timer with a 46.4s startup timeout and a 2.9s timeout period. Operating over an extended temperature range of -40°C to +85°C, it draws only 20µA of supply current and provides a minimum power-on reset pulse width of 100ms.

Feature Summary

• Monitors two distinct voltage rails using precision factory-set thresholds for reliable system supervision.
• Integrates a watchdog timer with defined startup and operating timeout periods to detect software hangs.
• Features an active-low, open-drain reset output compatible with standard logic families.

Applications

• Embedded systems requiring simultaneous monitoring of multiple power supplies
• Microprocessor-based designs needing watchdog functionality for fault recovery
• Portable electronics where low standby current consumption is critical

Procurement Notes

Verify the specific suffix against official documentation to confirm pinout and electrical characteristics. Ensure the component matches the required package type and thermal specifications for your design. Cross-reference the manufacturer's latest datasheet for any revisions or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when dual-voltage supervision with integrated watchdog timing is required in a compact footprint. Consider the open-drain output configuration for compatibility with your system's pull-up requirements. Verify that the fixed threshold voltages align with your specific power rail specifications.

Part Context

This part belongs to the MAX635x series of microprocessor supervisors designed to improve system reliability. These devices replace discrete components by integrating multiple reset functions into a single IC. The series offers various threshold combinations and package options to suit different application needs while maintaining low power consumption.

Replacement Considerations

Check for direct substitutes within the MAX635x family that offer identical threshold voltages and package dimensions. Verify functional equivalence regarding watchdog timer behavior and reset output polarity before substitution.