MAX6346UR34+T

Overview

The MAX6346UR34+T is a 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 a threshold voltage of 3.4 V. The device provides an active low, open-drain output with a reset delay time of 280 ms. It consumes a working power current of 500 nA and includes overvoltage detection at 3.451 V. The component supports a maximum power dissipation of 320 mW and functions reliably across a temperature range from -40 C to +85 C.

Feature Summary

• Ultra-low-power consumption suitable for battery-operated systems
• Active low open-drain reset output for flexible interfacing
• Integrated overvoltage detection capability

Applications

• Portable electronic devices requiring extended battery life
• Embedded systems needing reliable power supervision
• Industrial control circuits operating in varying temperatures

Procurement Notes

Verify the specific suffix UR34 to confirm the 3.4 V threshold voltage, as the MAX6346 series offers multiple threshold options. Ensure the open-drain output configuration aligns with your system's pull-up requirements. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement decisions.

Selection Notes

Select this component when a low quiescent current of 500 nA is critical for power efficiency. The open-drain output requires an external pull-up resistor, which must be sized appropriately for your logic levels. Consider the 280 ms reset delay to ensure it meets your system's startup timing constraints without causing false resets during power transitions.

Part Context

This part belongs to the MAX6346 family of micropower reset circuits designed for monitoring single voltage rails. It serves as a cost-effective solution for basic power supervision tasks where high precision or manual reset inputs are not required. The SOT-23-3 package allows for compact PCB layouts in space-constrained applications.

Replacement Considerations

The ADM6346 series may serve as a functional replacement, though pinouts and electrical characteristics should be compared carefully. Verify that the replacement part supports the same 3.4 V threshold and open-drain output configuration to maintain circuit compatibility.