MAX6346UR33+T

Overview

The MAX6346UR33+T is a voltage supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1.2V to 5.5V and features an adjustable threshold voltage with a specific setting of 3.3V for this variant. The device provides a single monitored input and delivers an active low, push-pull output signal. It includes a reset delay time of 200ms and maintains high accuracy of 1.5%. Designed for surface mount installation in SOT-23-3 packages, it functions reliably across a temperature range of -40°C to +85°C while consuming a maximum operating current of 500nA.

Feature Summary

• Ultra-low power consumption suitable for battery-operated applications
• Adjustable reset threshold voltage for flexible system monitoring
• Active low push-pull output configuration for direct logic interfacing

Applications

• Portable electronic devices requiring extended battery life
• Embedded systems needing reliable power failure detection
• Microprocessor reset circuits in industrial control units

Procurement Notes

Verify the exact threshold voltage specification against the datasheet, as suffixes indicate specific trip points. Confirm package availability and lead times through authorized distributors. Ensure compliance with RoHS directives and check for any regional distribution restrictions prior to ordering. Cross-reference the manufacturer part number with official component databases to avoid counterfeit risks.

Selection Notes

Select this component when a low-power supervisor with an adjustable threshold is required. Compare the 3.3V threshold setting against system voltage rails to ensure proper triggering. Evaluate the 200ms reset delay against processor startup requirements. Consider the SOT-23-3 footprint constraints during PCB layout design.

Part Context

This part belongs to the MAX6346 series of ultra-low-power reset circuits. It shares the family's core architecture but differs in threshold settings and package options. Related variants include different voltage thresholds and manual reset capabilities. The series is designed for compact designs where power efficiency and space are critical constraints.

Replacement Considerations

Direct substitutes may include other Maxim integrated voltage supervisors with similar threshold voltages and package types. Verify pin compatibility and electrical characteristics before substitution. Alternative manufacturers offer comparable low-power reset ICs, but interface timing and accuracy must be validated.