MAX6346XR44

Overview

The MAX6346XR44+T is a voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1.2 V to 5.5 V and consumes ultra-low power, drawing only 1 µA of supply current. The device features a fixed reset threshold voltage of 4.4 V with an accuracy of 2.5%. It provides a push-pull active-low reset output with a minimum reset timeout delay of 100 ms. The component is available in a compact SC-70-3L surface-mount package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Ultra-low power consumption of 1 µA for extended battery life
• Fixed 4.4 V reset threshold with 2.5% accuracy
• Push-pull active-low reset output driver
• Compact SC-70-3L surface-mount packaging

Applications

• Portable electronic devices requiring low standby current
• Battery-powered systems needing voltage supervision
• Microprocessor reset circuits in consumer electronics

Procurement Notes

Verify the exact suffix (+T) against official datasheets to confirm package type and tape/reel specifications. Ensure the manufacturer designation matches Analog Devices or Maxim Integrated as sources may vary. Confirm RoHS compliance status directly from the supplier documentation before procurement.

Selection Notes

Select this component when a fixed 4.4 V threshold is required for system monitoring. The 1 µA quiescent current makes it suitable for energy-constrained applications. Verify that the SC-70-3L footprint fits the design constraints and that the 100 ms timeout meets the microprocessor startup requirements.

Part Context

This part belongs to the MAX6346 series of microprocessor supervisory circuits. These devices are designed to monitor power-supply voltages and assert a reset signal when the supply falls below a specific threshold. The series offers various threshold options and packages to accommodate different system designs.

Replacement Considerations

MAX6346UR44+T: Verified alternative with identical electrical characteristics but in SOT-23-3 packaging.