MAX6347UR44-T

Overview

The MAX6347UR44-T is a microprocessor supervisory circuit from the MAX6347 series, manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single voltage input with a fixed threshold of 4.38V and an accuracy of 1.5%. The device features an active-high push-pull reset output and operates within a supply voltage range up to 5.5V. It draws a maximum supply current of 1µA and ensures a minimum power-on reset pulse width of 100ms. The component functions reliably down to 1V supply voltage and is rated for operation between -40°C and +85°C in a SOT-23-3 package.

Feature Summary

• Provides active-high push-pull reset signal generation
• Monitors single voltage input with factory-trimmed precision
• Ensures reliable operation down to 1V supply voltage
• Ignores fast transients on the monitored supply

Applications

• Microprocessor system power supply monitoring
• Digital system voltage supervision
• Portable equipment power management

Procurement Notes

Verify the exact suffix against official documentation, as standard listings often use '+T' for lead-free tape-and-reel packaging. Confirm availability status directly with authorized distributors, as supply constraints may apply. Ensure the specific threshold voltage matches the design requirements before procurement.

Selection Notes

Select this part when an active-high reset output is required for systems powered by 2.5V, 3V, 3.3V, or 5V rails. The 4.38V threshold suits applications needing supervision near the 5V nominal level. Consider the open-drain variant if wired-OR logic compatibility is necessary instead.

Part Context

This component belongs to the MAX634x family of ultra-low-power supervisory circuits. It shares core functionality with the MAX6346 and MAX6348 but differs in output configuration. The MAX6347 specifically provides an active-high push-pull output, distinguishing it from the active-low variants in the same series.

Replacement Considerations

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