MAX6348UR44

Overview

The MAX6348UR44+T is a single-channel voltage supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of up to 5.5 V and features an active-low, open-drain output. The device monitors one input with a threshold voltage of 4.37 V and provides a reset delay time of 100 ms minimum. It consumes 500 nA of operating current and functions across a temperature range of -40°C to +85°C. The component is housed in a SOT-23-3 package.

Feature Summary

• Ultra-low power consumption suitable for battery-operated applications
• Active-low open-drain reset output for direct microprocessor interfacing
• Compact surface-mount packaging for space-constrained designs

Applications

• Microprocessor system power monitoring
• Battery-powered portable electronics
• Consumer electronic devices requiring voltage supervision

Procurement Notes

Verify the exact suffix (+T) against official datasheets to confirm tape-and-reel packaging and lead-free status. Confirm that the UR44 designation corresponds to the specific 4.37 V threshold required for your design. Check manufacturer lifecycle status as some variants may be discontinued or subject to limited availability constraints.

Selection Notes

Select this component when a low-power, single-supervisor with an open-drain output is required. Ensure the 4.37 V threshold aligns with the monitored rail. Consider the SOT-23-3 package size and the 100 ms reset timeout duration relative to system startup requirements. Verify compatibility with the target microprocessor's reset input logic levels.

Part Context

The MAX6348 belongs to Maxim’s uPower Reset Circuit family, designed for low-voltage, low-current monitoring. It complements other series like MAX6346 and MAX6347, which offer different output types or thresholds. This specific variant focuses on ultra-low quiescent current while maintaining precise voltage supervision for critical system resets.

FAQ

Does the MAX6348UR44 include a manual reset input?

No, the MAX6348UR44 does not feature a manual reset input; it relies solely on automatic power-on reset functionality.

What is the reset output type of the MAX6348UR44?

The device provides an active-low, open-drain reset output.