MAX6338IUB+

Overview

The MAX6338IUB+ is a quad voltage monitor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors four distinct power supply rails simultaneously within a compact 10-pin uMAX package. The device features factory-trimmed threshold voltages of 1.8 V, 2.5 V, 3.3 V, and 5 V for precise overvoltage and undervoltage detection. It operates with a maximum supply voltage of 5.5 V and draws only 35 µA of quiescent current. The circuit provides active-low open-drain outputs and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Monitors up to four independent power supply inputs without requiring external components
• Provides active-low open-drain reset outputs for direct interface with digital logic
• Factory-trimmed threshold options eliminate the need for external resistor networks
• Low quiescent current consumption supports battery-powered applications

Applications

• Portable electronic devices requiring multi-rail power supervision
• Industrial control systems monitoring multiple voltage domains
• Embedded computing platforms ensuring stable power delivery
• Telecommunications equipment requiring reliable voltage tracking

Procurement Notes

Verify the specific suffix IUB against the official datasheet to confirm the exact threshold configuration. Confirm RoHS compliance status as indicated in the manufacturer documentation. Check for limited availability or obsolescence notices directly from Analog Devices. Ensure the uMAX-10 package dimensions match your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when simultaneous monitoring of four fixed voltage levels is required. The 1.8 V, 2.5 V, 3.3 V, and 5 V thresholds cover common logic and analog supply rails. Consider the 35 µA operating current for low-power designs. Verify that the active-low open-drain output polarity aligns with the target system's reset input requirements.

Part Context

This part belongs to the MAX6338 series of quad voltage monitors designed for space-constrained applications. The uMAX package offers a small form factor suitable for dense PCB layouts. The series provides various threshold combinations to accommodate different power architectures without custom design efforts.

Replacement Considerations

Check for other MAX6338 variants with matching threshold voltages if pin compatibility is critical. Verify functional equivalence with other quad supervisors offering similar output types and package styles.