MAX6338NUB+

Overview

The MAX6338NUB+ is a quad voltage monitor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors up to four power supplies without external components, featuring factory-trimmed thresholds for +5.0V, +3.3V, +3.0V, +2.5V, +1.8V, and -5.0V inputs. The device operates within a +2.5V to +5.5V supply range with a low 25µA supply current. It provides four independent open-drain active-low outputs and guarantees operation from -40°C to +85°C in a compact 10-pin µMAX package.

Feature Summary

• Monitors four distinct voltage rails simultaneously using factory-programmed or user-adjustable threshold settings
• Delivers four independent open-drain active-low reset outputs for flexible system integration
• Operates with minimal supply current consumption of 25µA to optimize power efficiency
• Requires no external components for basic supervision functions

Applications

• Telecommunications equipment power monitoring
• Desktop and notebook computer system supervision
• Data storage equipment voltage tracking
• Networking infrastructure power management
• Industrial equipment control systems

Procurement Notes

Verify the specific suffix code against official datasheets to confirm exact threshold voltages and tolerance levels. Confirm package availability as distribution status varies. Ensure compatibility with target supply voltage ranges before procurement. Cross-reference manufacturer part numbers to avoid counterfeit components.

Selection Notes

Select this component when simultaneous monitoring of multiple fixed voltage rails is required without external resistor networks. Consider the open-drain output configuration for level shifting needs. Evaluate the 25µA quiescent current against strict power budget constraints. Verify that the 10-pin µMAX footprint fits the design layout requirements.

Part Context

This component belongs to the MAX6338 family of quad voltage monitors designed for space-constrained applications. It integrates multiple supervisor functions into a single small outline package, replacing discrete comparator and resistor solutions. The series supports various nominal input voltages to cover common digital logic levels.

Replacement Considerations

Direct substitutes include other MAX6338 variants with different suffix codes indicating specific threshold voltages. Verify pinout compatibility and electrical specifications before substitution.