MAX6334UR23D3+T

Overview

The MAX6334UR23D3+T is a microprocessor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors a single voltage input and asserts an active-low, open-drain reset signal when the supply voltage drops below a preset threshold of 2.3V. The device features a minimum reset timeout period of 100ms to ensure stable power-up sequencing. Operating within a supply voltage range up to 5.5V, it consumes only 3.3µA of quiescent current. The component is housed in a compact SOT-23-3 surface-mount package and supports an extended industrial temperature range from -40°C to +125°C.

Feature Summary

• Monitors system power supply voltage and asserts reset output upon undervoltage conditions
• Provides reliable power-up reset with a guaranteed minimum timeout duration
• Features ultra-low quiescent current consumption for battery-powered applications
• Utilizes a small three-pin surface-mount package to minimize board space

Applications

• Microprocessor (µP) and digital system power supply monitoring
• Battery-operated electronic devices requiring low standby current
• Portable consumer electronics with limited power budgets
• Industrial control systems operating in extreme temperature environments

Procurement Notes

Verify the specific suffix D3 against official manufacturer documentation to confirm the exact reset timeout characteristics, as variations exist within the MAX6334 series. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer, as availability may be subject to allocation or discontinuation notices. Ensure the sourcing channel provides genuine components with traceable manufacturing history.

Selection Notes

Select this component when a simple, low-power supervisor is required for a single voltage rail without manual reset functionality. The open-drain output allows for flexible interfacing with various logic families. Consider alternative packages or thresholds if higher accuracy or different timeout periods are needed. Verify that the 2.3V threshold aligns with the target system's minimum operating voltage requirements.

Part Context

This part belongs to the MAX6334 series of 3-pin, ultra-low-voltage, low-power µP reset circuits. These devices are designed to increase circuit reliability by eliminating external components and adjustments. The series includes variants with different output types and thresholds, all sharing the core function of asserting a reset signal when VCC declines below a preset level.

Replacement Considerations

MAX6334UR23D2+T: Offers identical electrical specifications but utilizes a D2 suffix indicating a different packaging or tape configuration; verify mechanical compatibility.