MAX6352TYUK-T

Overview

The MAX6352TYUK-T is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors two independent power-supply voltages, with available threshold options including 1.8V, 2.5V, 3V, 3.3V, and 5V. The device features an active-low open-drain reset output that asserts when any monitored supply drops below its preset threshold. It operates within a supply voltage range up to 5.5V and maintains valid reset states as long as either input remains above +1.0V. Key electrical parameters include a 20µA supply current, a 280ms reset delay time, and operation over an extended temperature range of -40°C to +85°C.

Feature Summary

• Dual-input monitoring capability for simultaneous supervision of multiple power rails
• Active-low open-drain reset output ensures system reliability during voltage faults
• Low-power design suitable for battery-operated applications with minimal quiescent current
• Debounced manual reset input compatible with TTL and CMOS logic levels

Applications

• Portable and battery-powered equipment requiring multi-rail power management
• Computers and intelligent instruments needing precise voltage supervision
• Controllers in multivoltage systems ensuring synchronized reset behavior

Procurement Notes

Verify the specific suffix 'TY' against official Analog Devices documentation to confirm the exact threshold voltage configuration, as this variant determines the monitored voltage levels. Confirm package integrity for the SOT-23-5 form factor. Check current availability status, as distribution channels may indicate limited stock or end-of-life conditions for specific suffixes. Ensure compliance with RoHS directives if required for your assembly process.

Selection Notes

Select this component when designing systems that require independent monitoring of two distinct voltage supplies without external components. It is appropriate for applications demanding low standby current and guaranteed reset validity down to 1.0V on either rail. Consider the SOT-23-5 package size constraints and the need for a debounced manual reset input. Evaluate if the fixed threshold options meet the specific power rail requirements of the target application.

Part Context

The MAX6352 belongs to the MAX6351–MAX6360 family of microprocessor supervisors designed to improve system reliability compared to discrete solutions. These devices integrate precision factory-set thresholds and transient immunity into small packages. The series supports various voltage combinations and includes watchdog timer variants in higher-numbered models, offering a scalable solution for complex power management needs in industrial and consumer electronics.

Replacement Considerations

Direct substitutes within the same family include the MAX6351, MAX6353, and MAX6354, which offer similar dual-voltage monitoring but may differ in output type (push-pull vs. open-drain) or pinout configurations. Verify compatibility regarding reset output polarity and threshold voltage accuracy before substitution.