MAX6334UR24D1-T

Overview

The MAX6334UR24D1-T is a 3-pin, ultra-low-voltage microprocessor supervisory circuit from the MAX6333 family. It monitors a single voltage input with an overvoltage threshold of 2.44 V and an undervoltage threshold of 2.36 V. The device features an active-low, open-drain RESET output with a typical power-on reset delay of 2 ms. Operating on a supply voltage range of 1 V to 5.5 V, it consumes only 3.3 µA of quiescent current. The component is housed in a SOT-23-3 package and operates within a temperature range of -40°C to +125°C.

Feature Summary

• Provides reliable system supervision by asserting a reset signal when supply voltage drops below or rises above preset thresholds
• Features an active-low open-drain output suitable for interfacing with various logic families
• Ultra-low power consumption design minimizes energy usage during standby and operation

Applications

• Monitoring power supplies in 1.8V to 3.3V microprocessor systems
• Digital system voltage supervision to prevent erratic behavior
• Battery-powered devices requiring low quiescent current monitoring

Procurement Notes

Verify the specific suffix D1-T confirms the open-drain output configuration and 2.4V threshold variant. Confirm RoHS compliance status as indicated in official documentation. Check for obsolescence notices from Analog Devices, as some variants may be discontinued. Ensure the SOT-23-3 package matches your PCB footprint requirements before finalizing procurement decisions.

Selection Notes

Select this part when an open-drain output is required rather than push-pull. Choose the UR24 suffix specifically for the 2.4V nominal threshold application. Consider the MAX6333UR24D2+T if a push-pull output is needed instead. Evaluate the 2 ms reset delay against system startup timing requirements. Verify that the 1 V minimum operating voltage meets the lowest expected supply rail conditions.

Part Context

This component belongs to the MAX6332/MAX6333/MAX6334 series of 3-pin, ultra-low-voltage, low-power microprocessor reset circuits. These devices are designed to monitor power supplies in 1.8V to 3.3V systems. The primary distinction between the series members lies in their output polarity and type: MAX6332 offers active-high push-pull, MAX6333 provides active-low push-pull, and MAX6334 delivers active-low open-drain outputs.

Replacement Considerations

MAX6333UR24D2+T offers identical electrical specifications but features a push-pull output instead of open-drain. MAX6334UR24D1+T is the non-tape-and-reel version of the same functional device. Verify pinout compatibility and output drive requirements when substituting.