MAX6339JUT

Overview

The MAX6339JUT is a quad voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors four independent power supply inputs within an SOT-23-6 surface-mount package. The device features active-low open-drain reset outputs with a standard 200 ms timeout delay. Operating from a single supply up to 5.5 V, it consumes low quiescent current of 55 uA. The circuit provides precise threshold detection with 5% accuracy and operates reliably across the industrial temperature range of -40°C to +85°C.

Feature Summary

• Monitors four distinct voltage rails simultaneously
• Provides active-low open-drain reset signals
• Ensures reliable system startup with fixed timeout delay
• Optimized for low-power applications

Applications

• Embedded systems requiring multi-rail power supervision
• Industrial control units with multiple voltage domains
• Portable electronic devices with limited power budgets
• Communication equipment monitoring logic and analog supplies

Procurement Notes

Verify the specific suffix JUT against official datasheets to confirm factory-set threshold voltages. Confirm RoHS compliance status and lead-free availability through authorized distributors. Ensure the SOT-23-6 footprint matches the target PCB design. Check for obsolescence notices or lifecycle status updates from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when simultaneous monitoring of four separate voltage lines is required in a compact form factor. The fixed 200 ms reset delay suits applications needing consistent startup sequencing without external timing components. Consider the 55 uA supply current for battery-operated designs where standby power consumption is critical. Verify that the available factory-set thresholds align with the monitored rail voltages.

Part Context

This part belongs to the MAX6339P series of microprocessor supervisory circuits designed for low-voltage digital systems. It complements other single and dual channel supervisors by offering quad-channel capability in a minimal footprint. The series supports various industrial and commercial temperature ranges, providing flexibility for diverse environmental operating conditions.

Replacement Considerations

Cross-reference with ADM6339 variants for similar quad-channel functionality. Verify pin compatibility and threshold voltage alignment when substituting with other quad supervisors. Ensure equivalent reset timeout characteristics and output drive capabilities are maintained.