MAX6338OUB

Overview

The MAX6338OUB+ is a quad voltage monitor from the Maxim Integrated family, housed in a 10-pin uMAX package. It monitors four supply rails with factory-trimmed thresholds of -5V, 3.3V, 5V, and an adjustable input. Operating on a single supply from 2.5V to 5.5V, it draws 35µA. Outputs are active-low open-drain with less than 1ms reset timeout. Accuracy is 2.5%, and it functions within -40°C to +85°C.

Feature Summary

• Monitors up to four independent voltage supplies without external components
• Provides four active-low open-drain outputs for system reset signaling
• Includes a high-input impedance comparator option for adjustable monitoring

Applications

• Telecommunications equipment power supervision
• Desktop and notebook computer voltage monitoring
• Data storage equipment power integrity checks
• Industrial control system voltage regulation

Procurement Notes

Verify the suffix 'OUB' corresponds to the specific threshold configuration (-5V, 3.3V, 5V, Adjustable) required by the design. Confirm the package type is 10-uMAX/uSOP. Ensure compatibility with the 2.5V to 5.5V operating range and -40°C to +85°C temperature specifications before integration.

Selection Notes

Select this component when simultaneous monitoring of four distinct voltage rails is necessary in a compact footprint. The adjustable channel allows flexibility for non-standard voltages. Verify that the open-drain output structure aligns with the pull-up requirements of the target microcontroller or logic interface.

Part Context

Part of the MAX6338 series designed for multi-supervisory applications. The OUB variant specifically targets systems requiring negative voltage monitoring alongside standard positive rails. It replaces discrete comparator solutions, reducing board space and component count in portable and industrial electronics.

Replacement Considerations

Direct substitutes include other MAX6338 variants with different threshold combinations, such as MAX6338CUB+, MAX6338JUB+, MAX6338MUB+, and MAX6338PUB+. These share the same package and electrical characteristics but differ in fixed threshold values.

FAQ

Does the MAX6338OUB+ include a manual reset input?

No, the MAX6338OUB+ does not feature a manual reset input; it relies solely on automatic voltage monitoring.

What is the maximum supply voltage for the MAX6338OUB+?

The maximum supply voltage is 5.5V, with a minimum operating voltage of 2.5V.