MAX6328UR31-T

Overview

The MAX6328UR31-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 threshold voltage of 3.08 V. The device provides an active-low, open-drain output with a reset delay time of 185 ms. Packaged in a SOT-23-3 surface-mount case, it monitors one input channel without manual reset or watchdog timer capabilities. The component functions reliably across a temperature range of -40°C to +85°C with an accuracy of 1.5%.

Feature Summary

• Ultra-low-power operation suitable for battery-supplied systems
• Active-low open-drain reset output for flexible logic interfacing
• Compact three-pin SC70/SOT-23 package design

Applications

• Portable electronic devices requiring power monitoring
• Battery-operated instrumentation systems
• Microprocessor reset circuits in embedded applications

Procurement Notes

Verify availability status carefully as this specific part number may be obsolete or subject to limited supply constraints. Confirm that the manufacturer has officially discontinued production before finalizing procurement plans. Check authorized distributors for potential substitute models within the same series if direct sourcing is unavailable. Ensure compliance with RoHS standards and verify the exact package type matches your PCB footprint requirements.

Selection Notes

Select this component when a fixed 3.08 V threshold is required for system supervision. Consider the 185 ms delay duration to ensure compatibility with target microcontroller startup times. Evaluate the ultra-low quiescent current against total system power budgets. Verify that the single-channel monitoring capability meets the application's voltage sensing needs without requiring additional external components.

Part Context

This device belongs to the MAX6328U series of supervisory circuits designed for low-power applications. It shares functional similarities with other variants in the family but differs in specific threshold voltages and packaging options. The series is characterized by its ability to provide reliable reset signals in compact form factors, making it suitable for space-constrained consumer and industrial electronics.

Replacement Considerations

Public confirmed substitutes include MAX6328UR31+T and MAX6328UR31. These variants offer identical electrical specifications and pinout configurations. Verify that any replacement part maintains the same SOT-23-3 package dimensions and thermal characteristics to ensure mechanical compatibility.