MAX6353RVUK-T

Overview

The MAX6353RVUK-T is a dual-channel microprocessor supervisory circuit manufactured by Analog Devices/Maxim Integrated. It monitors two independent voltage inputs with factory-set thresholds of 2.32V and 2.93V. The device features active-low, push-pull reset outputs referenced to VCC1 and provides a debounced manual reset input. It operates within an extended temperature range of -40°C to +85°C and consumes only 20µA of supply current. The IC offers a minimum power-on reset pulse width of 100ms and a reset delay time of 180ms. It is housed in a compact SOT-23-5 surface-mount package.

Feature Summary

• Dual-channel monitoring for multiple power-supply voltages
• Precision factory-set power-supply reset thresholds
• Debounced TTL/CMOS-compatible manual-reset input
• Low 20µA supply current consumption

Applications

• Multi-voltage embedded systems requiring simultaneous supervision
• Portable battery-powered devices due to low quiescent current
• Industrial control units operating in extended temperature environments
• Communication equipment needing reliable power-fail detection

Procurement Notes

Verify the exact suffix configuration when ordering, as variations such as RVUK+T or SZUK+T indicate specific threshold voltages and packaging options. Confirm availability status directly with authorized distributors, as lead times may vary. Ensure the selected part number matches the required voltage thresholds and package type for your specific design implementation.

Selection Notes

Select this component when dual independent voltage monitoring is required without external resistors. The fixed thresholds eliminate calibration needs. Consider the SOT-23-5 package size for space-constrained layouts. Verify that the active-low output polarity and push-pull drive capability meet the downstream logic requirements of the target microprocessor or system controller.

Part Context

This part belongs to the MAX6351–MAX6360 family of dual/triple-voltage microprocessor supervisors. These devices improve system reliability by replacing discrete components with integrated solutions. The series offers various threshold combinations and package options, including 5-pin and 6-pin SOT-23 variants, designed for broad compatibility across different voltage rails.

Replacement Considerations

Check datasheets for other MAX635x variants (e.g., MAX6353SZUK+T) for identical pinouts but different voltage thresholds. Ensure substitute parts maintain the same SOT-23-5 footprint and electrical characteristics, specifically the 2.32V and 2.93V thresholds if those are critical to the original design.