MAX6351TZUT+T

Overview

The MAX6351TZUT+T is a dual microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1.0V to 5.5V and monitors two independent voltage inputs. The device features active-low open-drain reset outputs with a fixed reset delay time of 180ms. It includes a manual reset input for system control and lacks a watchdog timer or battery backup switch. The circuit provides high accuracy with a threshold tolerance of 1.5% and consumes a low operating supply current of 20µA. It is housed in a compact SOT-23-6 surface-mount package and supports an industrial temperature range from -40°C to +85°C.

Feature Summary

• Dual-channel voltage monitoring with configurable thresholds
• Manual reset input capability for system control
• Low power consumption suitable for battery-operated systems
• Compact SOT-23-6 surface-mount packaging

Applications

• Portable electronic devices requiring power supervision
• Embedded systems needing dual voltage rail monitoring
• Industrial control units with strict power integrity requirements
• Consumer electronics utilizing low-voltage logic circuits

Procurement Notes

Verify the specific suffix 'TZ' against the manufacturer's official part numbering guide to confirm exact threshold voltages, as these vary across the MAX6351 family. Ensure the component meets RoHS compliance standards required for your assembly process. Confirm availability status through authorized distributors, as lead times may fluctuate based on production schedules. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this component when dual independent voltage rails require simultaneous supervision without watchdog functionality. The fixed 180ms reset delay suits applications where power-up sequencing allows for extended stabilization periods. The manual reset feature enables external intervention during fault conditions. Consider the SOT-23-6 footprint constraints and verify that the 20µA quiescent current aligns with the system's power budget limitations.

Part Context

This part belongs to the MAX6351 series of dual/triple-voltage microprocessor supervisory circuits. It shares functional similarities with other members like MAX6351UVUT+T but differs in specific threshold configurations defined by the suffix. The series is designed for general-purpose power management in embedded environments, offering reliable reset generation for complex digital systems.

Replacement Considerations

Direct substitutes include other variants within the MAX6351 family such as MAX6351UVUT+T or MAX6351TWUT+T, provided the threshold voltages match the application requirements. Verify pinout compatibility and package dimensions before substitution. Alternative parts from other manufacturers may require schematic adjustments due to differing electrical characteristics.