MAX6802UR31D3+T

Supervisors Overview

The MAX6802UR31D3+T is a single-channel voltage supervisory circuit from the MAX6802 series, manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of up to 5.5 V and features a fixed threshold voltage of 2.85 V to 5 V, with a specific overvoltage threshold of 4.886 V for this variant. The device provides an active-low, open-drain reset output with a reset delay time of 2 ms. It consumes a low operating supply current of 5 uA and is housed in a SOT-23-3 surface-mount package. The component supports an extended industrial temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Provides precise power supply monitoring with factory-preset thresholds to eliminate external component adjustments.
• Features an active-low, open-drain reset output suitable for interfacing with various digital logic families.
• Designed for ultra-low power consumption, making it ideal for battery-operated or energy-efficient systems.

Supervisors Applications

• Microprocessor (µP) and digital system power supply supervision
• Battery-powered portable electronic devices requiring low quiescent current
• Industrial control systems operating in extended temperature environments

Supervisors Procurement Notes

Verify the exact suffix UR31D3+T against the manufacturer's official datasheet to confirm the specific threshold voltage and output configuration. Confirm RoHS compliance status and check for obsolescence notices, as availability may be limited. Ensure the SOT-23-3 footprint matches your PCB design constraints before finalizing procurement.

Supervisors Selection Notes

Select this component when an active-low, open-drain reset signal is required for systems powered between 2.85 V and 5.5 V. It is appropriate for designs needing minimal standby current and a compact 3-pin package. Compare against the MAX6801 if a push-pull output is preferred instead of open-drain.

Supervisors Part Context

This part belongs to the MAX680x family of microprocessor supervisory circuits, which are designed to monitor power supplies in digital systems. The family includes variants with different output types and thresholds, all sharing the goal of increasing circuit reliability by asserting a reset signal when supply voltage drops below a preset level.

Supervisors Replacement Considerations

The MAX6801UR31D3+T is a functional substitute with identical electrical parameters but features a push-pull output instead of open-drain. Verify that the open-drain nature of the MAX6802 is compatible with the downstream circuitry before substituting.