MAX6353SVUK

Overview

The MAX6353SVUK is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors two independent supply rails, asserting active-low push-pull reset outputs when voltages drop below preset thresholds of 2.32V and 2.93V. The device features a debounced manual reset input and operates within an extended temperature range of -40°C to +85°C. It utilizes a compact SOT-753 (SC-74A) surface-mount package and draws only 20µA of supply current.

Feature Summary

• Simultaneous monitoring of two distinct power-supply voltages with precision factory-set thresholds
• Active-low push-pull reset outputs referenced to specific supply rails for reliable system control
• Debounced manual-reset input compatible with TTL and CMOS logic levels

Applications

• Battery-powered systems requiring precise monitoring of critical supply rails
• Industrial control systems needing multi-voltage supervision
• Embedded applications utilizing multiple voltage domains

Procurement Notes

Verify the exact suffix against official datasheets, as variations like SZUK or UVUK indicate different threshold voltages or packages. Confirm availability status, as some variants are discontinued or limited. Ensure the SC-74A package matches your PCB footprint requirements. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when simultaneous supervision of two voltage rails is required in a small form factor. Compare threshold voltages against your specific supply rails to ensure accurate reset triggering. Consider the 20µA quiescent current for battery-sensitive designs. Verify that the active-low output polarity meets your microprocessor reset interface requirements.

Part Context

This device belongs to the MAX6351–MAX6360 family of dual/triple-voltage supervisory circuits designed to improve system reliability. These ICs replace discrete components by integrating multiple reset functions into a single chip. The series offers various threshold options and package types, including SOT-23 and SOT-753, catering to diverse embedded design constraints.

Replacement Considerations

Check for other MAX635x variants with matching threshold voltages if the SVUK suffix is unavailable. Verify pin compatibility with alternative dual-supervisor ICs from other manufacturers before substitution.