MAX6334UR22D3+T

Overview

The MAX6334UR22D3+T is a microprocessor supervisory circuit from the MAX6334 series, manufactured by Analog Devices Inc. (Maxim Integrated). It monitors a single voltage input and asserts an active-low reset signal when the supply voltage drops below a preset threshold of 2.2V. The device features an open-drain output and a typical reset timeout period of 100ms. It operates within a supply voltage range up to 5.5V and supports a wide operating temperature range from -40°C to +125°C. Packaged in a compact SOT-23-3 surface-mount case, it consumes low quiescent current.

Feature Summary

• Monitors power supply voltage and asserts reset when falling below threshold
• Provides active-low open-drain reset output for flexible interfacing
• Operates over extended industrial temperature range

Applications

• Microprocessor system power supervision
• Digital logic circuit monitoring
• Battery-powered device voltage tracking

Procurement Notes

Verify exact availability status with authorized distributors as lead times may vary. Confirm RoHS compliance and package marking details against official datasheets before procurement. Ensure ordering suffix matches required threshold and package specifications.

Selection Notes

Select this component for applications requiring a simple, low-power voltage supervisor with an open-drain output. Verify that the 2.2V threshold aligns with the monitored rail's minimum operating voltage. Consider the 100ms timeout duration relative to system startup requirements.

Part Context

Part of the MAX633x family of ultra-low-voltage, low-power reset circuits. Designed to replace discrete components in 1.8V to 3.3V systems, enhancing reliability while reducing board space and cost. The 'U' suffix indicates the specific 2.2V threshold variant within the series.

Replacement Considerations

MAX6334UR22D2+T offers identical electrical characteristics but with a push-pull output instead of open-drain. MAX6334UR22D3+ is the non-tape-and-reel version of the same part.