MAX6339GUT

Overview

The MAX6339GUT is a precision quad voltage monitor featuring microprocessor supervisory reset timing. It monitors up to four system supply voltages with thresholds of 1.58V, 2.63V, 4.38V, and an adjustable channel. The device operates within a supply range of 1V to 5.5V and draws 55µA. It provides an active-low open-drain output with a fixed 200ms reset delay. Accuracy is specified at 5%, and it functions between -40°C and +85°C in a SOT-23-6 package.

Feature Summary

• Monitors four independent system supply voltages simultaneously
• Provides precise supervisory reset signals with fixed timing delays
• Features low-power operation suitable for battery-backed systems
• Offers flexible threshold selection including one adjustable channel

Applications

• Microprocessor power supply supervision
• Portable equipment voltage monitoring
• Battery-operated system protection
• Industrial control board power integrity checks

Procurement Notes

Verify the specific suffix (e.g., GUT vs PUT) against the datasheet to confirm threshold configurations. Confirm RoHS compliance status as indicated by the '+' suffix if required. Check current availability as distribution channels may list this component as obsolete or limited stock. Ensure the SOT-23-6 footprint matches the PCB design requirements before ordering.

Selection Notes

Select this component when simultaneous monitoring of four distinct voltage rails is required. The adjustable threshold allows customization for non-standard supply levels. Consider the 5% accuracy and 200ms delay for timing-sensitive applications. Verify that the open-drain output interface is compatible with the downstream logic levels of the monitored microprocessor or controller.

Part Context

The MAX6339 belongs to Maxim Integrated's family of quad voltage supervisors designed for robust system management. It integrates precision comparators and timer circuits into a compact surface-mount package. This series supports various threshold combinations to accommodate different power rail architectures in embedded systems.

Replacement Considerations

Cross-reference with MAX6339PUT+T for similar quad monitoring capabilities. Verify pinout compatibility and threshold voltage alignment before substitution. Check for updated lead-free manufacturing processes if environmental compliance is mandatory.