MAX6339CUT

Overview

The MAX6339CUT is a quad voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors four independent power supply rails within a SOT-23-6 surface-mount package. The device features open-drain or open-collector active-low reset outputs with a minimum reset timeout of 140ms. It operates on a single supply voltage ranging from 1V to 5.5V, consuming low quiescent current. Threshold voltages include fixed options such as 2.63V and 4.38V, alongside adjustable settings. The component supports an operating temperature range of -40°C to +85°C and utilizes BICMOS technology for reliable performance in multi-voltage systems.

Feature Summary

• Monitors four independent voltage inputs simultaneously
• Provides active-low reset signals via open-drain/open-collector outputs
• Supports adjustable and fixed threshold voltage configurations
• Operates within a wide supply voltage range up to 5.5V

Applications

• Multi-rail power supply supervision in embedded systems
• Microprocessor reset management in industrial controllers
• Voltage monitoring in portable electronic devices
• System integrity verification in communication equipment

Procurement Notes

Verify the specific suffix and manufacturer designation when ordering, as variants exist under Maxim Integrated and Rochester Electronics. Confirm RoHS compliance status and lead time requirements directly with authorized distributors, as availability may vary by region. Ensure the selected part number matches the required threshold voltage configuration and package type for your design.

Selection Notes

Select this component when simultaneous monitoring of four distinct voltage rails is required in a compact footprint. Consider the adjustable threshold option if standard fixed values do not match your system's nominal voltages. Verify that the open-drain output capability aligns with your microcontroller's input logic levels. Ensure the operating temperature range meets the environmental conditions of the target application.

Part Context

The MAX6339 belongs to the MAX6339P series of quad voltage supervisors. It is designed to replace older discrete monitoring solutions by integrating four comparators and reset logic into a single small outline package. This integration reduces board space and simplifies design complexity compared to using individual supervisor ICs for each rail.

Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided documentation. Users should consult official cross-reference guides or contact Analog Devices support for verified alternatives.