MAX6334UR24D1

Overview

The MAX6334UR24D1+T is a microprocessor supervisory circuit from the MAX6334 series, designed for monitoring power supplies in 1.8V to 3.3V systems. It features an active-low open-drain reset output and operates within a supply voltage range up to 5.5V. The device asserts a reset signal when VCC drops below a preset threshold of approximately 2.44V, maintaining it for a 40ms timeout period after rising above the threshold. It consumes only 3.3µA of supply current and functions reliably between -40°C and +125°C.

Feature Summary

• Monitors supply voltage and asserts reset when falling below a factory-trimmed threshold
• Provides active-low open-drain output suitable for wired-OR configurations
• Includes a fixed 40ms reset timeout to ensure stable power-up sequencing

Applications

• Microprocessor (µP) power supply supervision
• Digital system voltage monitoring
• Battery-powered equipment reset control

Procurement Notes

Verify the exact suffix D1 against official datasheets to confirm the specific threshold voltage, as standard variants often use D2 or D3. Confirm availability status with authorized distributors, as this component may be subject to limited supply or discontinuation by Analog Devices/Maxim Integrated. Ensure RoHS compliance documentation matches the specific manufacturing batch.

Selection Notes

Select this part when an open-drain output is required for interfacing with multiple loads or different logic levels. Compare against MAX6333 if a push-pull output is preferred for stronger drive capability. Verify that the 2.44V threshold aligns with the target system's minimum operating voltage requirements.

Part Context

Part of the MAX6332/MAX6333/MAX6334 family of ultra-low-voltage, low-power µP reset circuits. These devices eliminate external components by integrating precision comparators and timers. The MAX6334 variant specifically offers an open-drain output, distinguishing it from the push-pull outputs of the MAX6332 and MAX6333.

Replacement Considerations

MAX6334UR23D2+T: Similar open-drain output but with a 2.3V threshold. MAX6333UR24D2+T: Push-pull output instead of open-drain.