MAX6339JUT+T

Overview

The MAX6339JUT+T is a precision quad voltage monitor with microprocessor supervisory reset timing, manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors up to four system supply voltages simultaneously. The device operates within a power supply range of 1V to 5.5V and features an active-low open-drain output. It includes a fixed reset timeout period of 200ms. The component is housed in a compact SOT-23-6 surface-mount package and supports an adjustable threshold voltage alongside fixed options such as 1.58V, 2.78V, and 4.63V. It functions without manual reset or watchdog timer capabilities.

Feature Summary

• Monitors up to four independent system supply voltages for comprehensive power supervision
• Provides active-low reset signal assertion when monitored voltages fall below preset thresholds
• Features open-drain output configuration suitable for interfacing with various logic families
• Includes fixed reset timeout delay to ensure stable power-up sequencing

Applications

• Microprocessor (µP) supervisory circuits requiring multi-voltage monitoring
• Digital systems needing precise power supply validation
• Embedded designs utilizing multiple voltage rails for core and peripheral logic

Procurement Notes

Verify the specific suffix 'J' indicates the correct threshold voltage combination for your design requirements. Confirm the SOT-23-6 package compatibility with your PCB footprint. Ensure the operating temperature range meets your environmental specifications. Check current availability status as distribution may vary. Validate RoHS compliance documentation if required for your manufacturing standards.

Selection Notes

Select this component when simultaneous monitoring of four distinct voltage rails is necessary. Choose the MAX6339JUT+T variant specifically for its defined threshold profile compared to other MAX6339 subtypes. Consider the low quiescent current for battery-operated applications. Evaluate the open-drain output against pull-up resistor requirements in your circuit design. Compare reset timeout characteristics against system startup timing constraints.

Part Context

This part belongs to the MAX6339 series of quad voltage supervisors from Maxim Integrated. It is designed to replace discrete monitoring solutions, reducing board space and component count. The series offers various threshold combinations to accommodate different standard voltage levels. It serves as a critical reliability component in digital systems by preventing erratic behavior during power fluctuations.

Replacement Considerations

Direct substitutes include other MAX6339 variants with compatible packages and electrical characteristics, such as MAX6339PUT+T or MAX6339CUT+T, provided their specific threshold voltages match the application needs. Verify pinout compatibility before substitution.