MAX6351SVUT+

Overview

The MAX6351SVUT+ is a dual-voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.2V to 5.5V and features two independent voltage monitoring channels with factory-set thresholds, specifically 2.19V and 2.93V for this suffix variant. The device provides low-level active push-pull reset outputs referenced to VCC1 and VCC2, ensuring system stability during power transitions. It includes a manual reset input with TTL/CMOS compatibility and debounce functionality. The component supports an extended operating temperature range from -40°C to +85°C and consumes a typical quiescent current of 20µA.

Feature Summary

• Dual-channel voltage supervision with independent threshold settings
• Low-power operation with minimal quiescent current consumption
• Manual reset input with noise immunity and debouncing
• Push-pull output drivers for robust signal integrity

Applications

• Multi-rail embedded systems requiring simultaneous power monitoring
• Industrial control units with strict voltage tolerance requirements
• Portable electronic devices utilizing multiple internal voltage domains

Procurement Notes

Verify the specific voltage threshold suffix (SV) against design requirements before procurement. Confirm package availability as surface-mount SOT-23-6 variants may have limited distribution channels. Ensure compatibility with existing PCB footprints and verify RoHS compliance status through official manufacturer documentation prior to finalizing purchase orders.

Selection Notes

Select this component when precise monitoring of two distinct voltage rails is required without external resistor networks. The fixed threshold configuration simplifies board layout compared to adjustable supervisors. Consider the push-pull output capability if driving loads directly, and ensure the operating voltage range aligns with the lowest monitored rail in the target application architecture.

Part Context

This part belongs to the MAX635x series of microprocessor supervisory circuits designed for high reliability. The series offers various combinations of dual and triple voltage monitoring capabilities in compact packages. The MAX6351 specifically addresses applications needing two independent reset signals derived from separate power supplies, enhancing system fault detection and recovery mechanisms.

Replacement Considerations

Cross-reference with other MAX6351 variants differing only in threshold voltages or packaging options. Verify pinout compatibility with alternative manufacturers' dual-supervisor ICs if sourcing substitutes. Ensure functional equivalence regarding reset timing and output drive strength when evaluating potential replacement components.