MAX6346XR44+

Overview

The MAX6346XR44+T is a voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 1.2 V to 5.5 V and features a fixed threshold voltage of 4.4 V with an accuracy of 2.5%. The device provides a single monitored input and delivers an active low, push-pull reset output. It consumes 1 uA of operating supply current and includes no manual reset or watchdog timer functions. The component supports surface mount installation in SC-70-3L packages and functions reliably across temperatures from -40 C to +85 C.

Feature Summary

• Ultra-low-power operation with 1 uA supply current consumption
• Active low push-pull reset output for direct logic interfacing
• Fixed threshold voltage monitoring without external components
• Compact SC-70-3L package suitable for space-constrained designs

Applications

• Portable battery-powered equipment requiring low quiescent current
• Microprocessor power supply supervision systems
• Consumer electronics with strict size limitations
• Industrial control units needing reliable voltage monitoring

Procurement Notes

Verify the exact suffix against official documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status through manufacturer datasheets. Check availability constraints as distribution channels may report limited stock. Ensure the ordering part number matches the specific threshold voltage variant required for the design.

Selection Notes

Select this component when a fixed 4.4 V threshold is appropriate for the target power rail. Consider the 2.5% accuracy tolerance against system requirements. Evaluate the SC-70-3L footprint against PCB layout constraints. Compare the 1 uA current draw against other supervisory options if lower power is critical.

Part Context

This part belongs to the MAX6346 series of ultra-low-power reset circuits. It shares functional similarities with other devices in the family but differs in threshold voltage and package type. The series is designed for applications requiring minimal standby current and simple integration into microprocessor systems.

Replacement Considerations

Consult official substitution guides for compatible parts with matching thresholds. Verify package compatibility before replacing the component. Ensure electrical parameters align with existing design specifications.