MAX6359LSUT

Overview

The MAX6359LSUT is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors two input supply voltages with precision factory-set thresholds of 3.08V and 4.63V, with overvoltage detection at 3.14V and 4.72V. The device features an active-low push-pull reset output referenced to VCC1 and includes a manual reset input. It operates within a supply voltage range up to 5.5V and supports a watchdog timer with a 180ms reset delay. The component is housed in a surface-mount SOT-23-6 package and functions reliably across an extended temperature range of -40°C to +85°C.

Feature Summary

• Monitors multiple power-supply voltages with precision factory-set thresholds to ensure system reliability
• Integrates a watchdog timer with startup timeout for enhanced fault protection
• Features a debounced manual-reset input compatible with TTL/CMOS logic levels

Applications

• Microprocessor (µP) supervisory circuits
• Dual/triple-voltage power monitoring systems
• Embedded systems requiring voltage supervision

Procurement Notes

Verify the specific suffix 'L' against the manufacturer's official part numbering guide to confirm threshold accuracy and pinout compatibility. Ensure the ordering code matches the required SOT-23-6 packaging format. Cross-reference the datasheet revision date to validate electrical characteristics before integration into production designs.

Selection Notes

Select this component when precise monitoring of two distinct voltage rails is required alongside watchdog functionality. The push-pull output configuration offers stronger drive capability compared to open-drain alternatives. Verify that the fixed threshold values align with the target supply voltages of the application design.

Part Context

This device belongs to the MAX635x series of microprocessor supervisors designed to improve system accuracy compared to discrete components. The series provides various threshold options and package configurations to suit different embedded applications while maintaining low supply current consumption.

Replacement Considerations

Check the MAX6358LTUT+T for similar dual-voltage supervision with open-drain outputs. The MAX6359MSUT+T offers comparable performance with potential manufacturing lot variations. Confirm pinout and threshold compatibility before substitution.