MAX6338NUB+T

Overview

The MAX6338NUB+T is a quad voltage monitor from Analog Devices, designed to supervise up to four independent power supplies without requiring external components. It operates within a supply voltage range of 2.5V to 5.5V and features an active-low, open-drain reset output. The device includes a fixed threshold voltage of 4.63V for its monitoring channels. It is housed in a compact 10-µMAX package and supports surface-mount installation. The component functions reliably across an industrial temperature range of -40°C to +85°C, ensuring stable performance in demanding electronic environments.

Feature Summary

• Monitors up to four independent power supply rails simultaneously without external components
• Provides active-low, open-drain reset signal upon detection of out-of-specification voltages
• Operates with a wide supply voltage range from 2.5V to 5.5V
• Housed in a space-saving 10-µMAX surface-mount package

Applications

• Multi-rail power supply supervision in embedded systems
• Voltage monitoring in industrial control equipment
• Power integrity management in telecommunications infrastructure
• System reset generation in portable battery-operated devices

Procurement Notes

Verify the specific suffix and tape/reel configuration when ordering, as packaging variants exist. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as historical data indicates potential variations. Ensure the supplier provides valid traceability documentation. Cross-reference the exact part number against the latest official datasheet to confirm pinout and electrical specifications match your design requirements before finalizing procurement.

Selection Notes

Select this component when simultaneous monitoring of multiple voltage rails is required without adding external circuitry complexity. The fixed 4.63V threshold suits applications where standard logic levels require supervision. Consider the 10-µMAX package size for space-constrained PCB layouts. Verify that the active-low open-drain output interface aligns with the downstream microcontroller or FPGA input capabilities. Ensure the operating temperature range meets the environmental conditions of the target application.

Part Context

The MAX6338 belongs to the Maxim Integrated voltage supervisor family, which focuses on providing reliable system reset and monitoring functions. This specific variant integrates four monitoring channels into a single compact package, reducing board space compared to using individual supervisors. It is part of the broader portfolio of power management solutions offered by Analog Devices, targeting robustness in industrial and commercial electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the official Analog Devices website or authorized distributor databases for current cross-reference information. Verify compatibility regarding threshold voltages, package dimensions, and electrical characteristics before considering alternative components.