MAX6338BUB+T

Overview

The MAX6338BUB+T is a quad voltage monitor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors up to four independent power supply rails simultaneously without requiring external components. The device features active-low, open-drain outputs for reset signaling and operates within a supply voltage range of up to 5.5V. It is housed in a compact 10-pin uMAX package designed for surface-mount applications. The component supports a wide operating temperature range from -40°C to +85°C and maintains an accuracy of 2.5%. Factory-trimmed thresholds include fixed options such as 1.8V, 3.0V, and 5.0V, alongside adjustable comparator inputs for custom monitoring requirements.

Feature Summary

• Simultaneous monitoring of four independent voltage supplies
• Factory-trimmed threshold voltages with adjustable comparator option
• Active-low open-drain reset outputs
• Compact 10-pin uMAX surface-mount packaging

Applications

• Portable equipment power system supervision
• Battery-powered handheld devices
• Embedded systems requiring multi-rail monitoring
• Industrial control units with multiple voltage domains

Procurement Notes

Verify the specific suffix 'B' against the official datasheet to confirm the exact factory-trimmed threshold configuration, as this variant defines the fixed voltage levels for three channels. Ensure the '+T' designation aligns with the required tape-and-reel packaging format for automated assembly processes. Cross-reference the manufacturer part number with the latest Analog Devices documentation to confirm current production status and availability constraints.

Selection Notes

Select this component when simultaneous supervision of four distinct voltage rails is required in space-constrained designs. The integrated adjustable comparator input allows flexibility for non-standard voltage monitoring needs. Consider the 2.5% accuracy specification for precision applications. Verify that the active-low output polarity matches the receiving logic interface requirements of the target microcontroller or processor.

Part Context

This component belongs to the MAX6338 series of quad voltage monitors, which are designed to simplify power management in complex electronic systems. The series offers various threshold combinations to accommodate different standard voltage rails commonly found in digital circuits. The uMAX package provides a small footprint suitable for high-density PCB layouts, making it a preferred choice for modern miniaturized electronic devices.

Replacement Considerations

Check for other MAX6338 variants with matching threshold specifications if the B-series is unavailable. Ensure any substitute maintains the same 10-pin uMAX package and electrical characteristics. Verify compatibility with the existing board layout and signal integrity requirements before implementing any alternative component.