MAX6334UR16D2-T

Overview

The MAX6334UR16D2-T is a microprocessor supervisory circuit designed for 1.8V to 3.3V digital systems. It monitors the VCC supply voltage and asserts an active-low, open-drain reset signal when the voltage declines below a preset threshold of 1.6V. The device maintains this reset state for a minimum timeout period of 100ms after VCC rises above the threshold. It operates with a low supply current of 3.3µA at 1.8V and functions within a temperature range of -40°C to +125°C in a 3-pin SOT-23 package.

Feature Summary

• Monitors power supply voltages to ensure system reliability by asserting reset signals during undervoltage conditions
• Features an active-low, open-drain output suitable for interfacing with various logic families
• Includes a built-in reset timeout delay to prevent premature deassertion during power-up transients

Applications

• Microprocessor (µP) power supply monitoring in embedded systems
• Digital system voltage supervision for portable devices
• Battery-powered equipment requiring low quiescent current

Procurement Notes

Verify the exact suffix 'T' against official Analog Devices documentation to confirm reel packaging specifications. Confirm that the UR16 designation corresponds to the specific 1.6V threshold variant. Check current availability status as distribution channels may list obsolete or limited-stock items. Ensure RoHS compliance data matches the specific manufacturing batch requirements for your assembly process.

Selection Notes

Select this component when an open-drain output is required for wired-OR configurations or level shifting. The 1.6V threshold is appropriate for systems where the supply rail drops slightly below nominal levels before triggering a reset. Consider the 100ms minimum timeout to accommodate slow power-ramp characteristics. Verify that the SOT-23-3 package fits the spatial constraints of the design.

Part Context

This part belongs to the MAX6332/MAX6333/MAX6334 family of ultra-low-voltage, low-power µP reset circuits. While the MAX6332 offers an active-high push-pull output and the MAX6333 provides an active-low push-pull output, the MAX6334 specifically features an active-low open-drain output. All variants share similar monitoring capabilities and low power consumption characteristics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.