MAX6352SVUK+T

Overview

The MAX6352SVUK+T is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors two independent power supply inputs, VCC5 and VCC3, asserting a system reset if either voltage drops below its respective factory-set threshold. The device features a debounced manual-reset input and a watchdog timer with a 46.4-second start-up timeout and a 2.9-second normal timeout. It operates within a supply range of +1.0V to +5.5V, consumes only 20µA of supply current, and is housed in a compact 6-pin SOT-23 package suitable for space-constrained portable applications.

Feature Summary

• Dual-input monitoring capability for simultaneous supervision of distinct power rails
• Integrated watchdog timer providing extended start-up timeout and rapid normal operation timeout
• Debounced manual-reset input compatible with TTL and CMOS logic levels
• High immunity to power-supply transients ensuring stable system operation

Applications

• Portable battery-powered equipment requiring multi-rail supervision
• Personal computer systems monitoring both 5V and 3.3V supplies
• Intelligent instruments and controllers needing reliable reset generation
• Multivoltage embedded systems demanding low standby current

Procurement Notes

Verify the specific suffix 'SV' against the official Maxim Integrated datasheet to confirm the exact reset thresholds for VCC5 and VCC3. Ensure the component matches the 6-pin SOT-23 package dimensions and lead-free RoHS compliance requirements specified in the manufacturer's documentation before integration into the design.

Selection Notes

Select this component when dual-voltage supervision is required within a minimal footprint. The 20µA supply current makes it ideal for battery-operated devices where standby power consumption is critical. Consider the watchdog timer functionality if system stability against software hangs is a priority, and verify that the available reset thresholds align with the target power rail voltages.

Part Context

This part belongs to the MAX635x series of microprocessor supervisors designed for multiple-voltage systems. Unlike single-channel supervisors, these devices integrate monitoring for two inputs into a small package, reducing board space and component count. The series is optimized for industrial and consumer electronics requiring robust power management without external components.

Replacement Considerations

Compatible substitutes include other MAX635x variants such as MAX6350 or MAX6351, provided they support dual-input monitoring and match the required reset thresholds. Verify pinout compatibility and package type (SOT-23) to ensure direct replacement without PCB redesign.