MAX6339JUT+

Overview

The MAX6339JUT+ is a quad voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated, designed for monitoring multiple power rails in digital systems. It operates within a supply voltage range of 1V to 5.5V and consumes low quiescent current. The device features four independent open-drain reset outputs with active-low polarity, providing system protection against undervoltage conditions. It includes a minimum reset timeout period of 140ms to ensure stable power-up sequences. The component is housed in a compact SOT-23-6 surface-mount package and supports an operating temperature range from -40°C to +85°C, making it suitable for industrial and commercial applications requiring reliable multi-voltage supervision.

Feature Summary

• Monitors four distinct power supply voltages simultaneously using dedicated threshold channels
• Provides active-low open-drain reset signals with a guaranteed minimum timeout duration
• Operates across a wide input voltage range with low power consumption characteristics
• Available in a small footprint SOT-23-6 package for space-constrained designs

Applications

• Multi-rail power supply supervision in embedded systems
• Microprocessor and FPGA board-level voltage monitoring
• Industrial control unit power integrity verification
• Communication equipment voltage status tracking

Procurement Notes

Verify the specific suffix 'J' corresponds to the required threshold voltage combinations before procurement, as variations exist within the MAX6339 family. Confirm RoHS compliance status through official documentation, as lead-free designations may vary by production batch. Ensure the SOT-23-6 package outline matches your PCB footprint requirements. Check availability status directly with authorized distributors, as stock levels fluctuate. Validate that the active-low output configuration aligns with your downstream logic interface requirements.

Selection Notes

Select this component when simultaneous monitoring of four separate voltage rails is required without external comparator circuits. Choose the MAX6339JUT+ variant specifically if its factory-set thresholds match your critical power rail levels. Consider the 140ms minimum reset timeout for systems requiring extended stabilization periods during power-up. Evaluate the SOT-23-6 package size against available board real estate constraints. Verify that the open-drain output type is compatible with your system's pull-up resistor network and logic voltage levels.

Part Context

The MAX6339 series belongs to Maxim Integrated's portfolio of microprocessor supervisory circuits designed for robust power management. This family provides integrated solutions for detecting undervoltage conditions across multiple power domains. The JUT+ designation indicates a specific threshold configuration within the broader MAX6339 product line, tailored for applications requiring precise voltage monitoring in compact form factors.

Replacement Considerations

Direct substitutes include other MAX6339 variants with different threshold configurations such as MAX6339CUT+ or MAX6339PUT+, provided the voltage thresholds meet application requirements. Cross-reference pinout compatibility to ensure interchangeability without PCB redesign. Verify that alternative parts maintain the same SOT-23-6 package dimensions and electrical characteristics.