MAX6338GUB

Overview

The MAX6338GUB is a quad voltage monitor manufactured by Analog Devices Inc./Maxim Integrated. It monitors four supply voltages without external components, featuring factory-trimmed thresholds of 1.8V, 3V, 5V, and adjustable settings. The device operates within a +2.5V to +5.5V supply range and consumes low power with a typical supply current of 35µA. It provides four independent open-drain active-low outputs and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Monitors up to four distinct supply voltages simultaneously without requiring external components
• Offers flexible threshold configurations including fixed nominal levels and user-adjustable inputs
• Provides four independent open-drain active-low reset outputs for system supervision

Applications

• Telecommunications systems
• High-end printers
• Desktop and notebook computers
• Data storage equipment
• Industrial equipment

Procurement Notes

Verify component authenticity through authorized channels due to potential availability constraints. Confirm specific suffix designations match required threshold voltages and package variants. Check RoHS compliance status and lead-free certification requirements against project specifications. Ensure the selected variant aligns with the intended operating temperature range and supply voltage parameters.

Selection Notes

Select this component when simultaneous monitoring of multiple power rails is required in space-constrained designs. The integrated nature eliminates external resistor networks, reducing bill of materials complexity. Consider the open-drain output configuration for compatibility with various logic levels. Evaluate the adjustable input option if standard fixed thresholds do not meet specific application voltage requirements.

Part Context

The MAX6338 belongs to Maxim Integrated's microprocessor supervisory circuit family designed for reliable power management. This series emphasizes compact packaging and low power consumption suitable for portable and industrial applications. The quad monitor variant specifically addresses systems requiring comprehensive multi-rail supervision within a minimal footprint.

Replacement Considerations

Direct substitutes include other MAX6338 variants with different suffixes indicating specific threshold combinations or package types. Cross-reference part numbers based on exact voltage threshold requirements and physical package dimensions.