MAX6339NUT

Overview

The MAX6339NUT is a precision quad voltage monitor featuring microprocessor supervisory reset timing. It monitors up to four system supply voltages within a 1V to 5.5V range. The device utilizes BICMOS technology and operates between -40°C and +85°C. It provides an active-low open-drain or open-collector reset output with a minimum timeout of 140ms. Thresholds include fixed options like 2.78V and 4.63V, plus adjustable settings. Packaged in a SOT-23-6 surface-mount case.

Feature Summary

• Monitors up to four independent system supply voltages simultaneously
• Provides precise supervisory reset timing for microprocessor systems
• Features open-drain or open-collector active-low reset output

Applications

• Microprocessor power supply monitoring
• Multi-voltage digital system supervision
• Battery-powered equipment power management

Procurement Notes

Verify the specific suffix (e.g., NUT vs CUT) against official Analog Devices documentation to confirm exact threshold configurations and package variations. Confirm RoHS compliance status as legacy Maxim Integrated parts may have varying environmental certifications. Ensure the open-drain/reset polarity matches the target circuit design requirements before procurement.

Selection Notes

Select this component when simultaneous monitoring of multiple voltage rails is required in space-constrained designs. The SOT-23-6 package offers a compact footprint suitable for portable electronics. Verify that the available fixed thresholds or adjustable range align with the specific supply voltages being monitored in the application.

Part Context

Part of the MAX633x series of ultra-low-power supervisors from Maxim Integrated, now under Analog Devices. This family focuses on providing reliable reset signals for embedded systems without requiring external components. The quad-channel variant distinguishes itself by handling multiple voltage domains within a single small package.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX633x family, such as the MAX6339HUT, which may offer different threshold options. Verify that any substitute maintains the same SOT-23-6 package and open-drain output characteristics to ensure circuit compatibility.