MAX6338MUB

Overview

The MAX6338MUB+ is a quad voltage monitor manufactured by Analog Devices Inc. under the Maxim Integrated brand, housed in a 10-uMAX/uSOP surface-mount package. It monitors up to four supply voltages without external components, featuring factory-trimmed thresholds for +5.0V, +3.3V, +3.0V, +2.5V, +1.8V, and -5.0V, plus an adjustable comparator option. The device operates within a +2.5V to +5.5V supply range, drawing only 25µA of supply current. It provides four independent, open-drain, active-low outputs with reset timeouts less than 1ms. The component is rated for operation from -40°C to +85°C.

Feature Summary

• Monitors up to four distinct voltage supplies simultaneously without requiring external monitoring components.
• Offers flexible threshold configurations including factory-programmed nominal voltages and a high-impedance adjustable input for general-purpose comparison.
• Provides four independent open-drain active-low output signals for system reset or status indication.

Applications

• Telecommunications equipment power supervision
• Desktop and notebook computer voltage monitoring
• Data storage equipment power integrity checks
• Networking equipment supervisor circuits

Procurement Notes

Verify the complete part number suffix, as variations such as MUB indicate specific package types like 10-uMAX. Confirm that the ordering suffix does not alter functional characteristics unless explicitly stated in official documentation. Ensure compatibility with the required threshold voltages and output configuration for the target application design.

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 typically needed for discrete supervisors. Consider the open-drain output requirement for pull-up resistor implementation and verify that the 25µA quiescent current aligns with low-power system requirements.

Part Context

The MAX6338 belongs to the Maxim Integrated family of microprocessor supervisory circuits designed for reliable power management. As a quad monitor, it consolidates functions that would otherwise require multiple discrete ICs, reducing board space and complexity. The uMAX package supports dense surface-mount layouts common in portable and industrial electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data. Verify pinout and electrical specifications against any potential alternative devices before substitution.