MAX6338PUB

Overview

The MAX6338PUB is a quad voltage monitor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors four independent power supply inputs without requiring external components, utilizing factory-trimmed threshold voltages for +5V, +3.3V, +2.5V, and adjustable settings. The device operates within a supply voltage range of 2.5V to 5.5V and draws a typical supply current of 35µA. It features four open-drain, active-low outputs with an accuracy of 2.5%. Designed for surface-mount installation, it is housed in a 10-pin uMAX package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Monitors up to four distinct voltage supplies simultaneously using internal comparators without external components
• Provides four independent open-drain active-low reset outputs for flexible system integration
• Offers factory-trimmed thresholds for standard rails plus high-impedance adjustable input options
• Operates on low supply current consumption suitable for battery-powered or energy-efficient designs

Applications

• Telecommunications equipment power monitoring
• Desktop and notebook computer system supervision
• Data storage equipment voltage tracking
• Industrial control system power validation

Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation to confirm exact threshold configurations and package variations. Ensure compatibility with required voltage levels and output drive capabilities before integration. Confirm RoHS compliance status and manufacturing origin details through authorized distribution channels. Validate that the selected variant meets the thermal and electrical requirements of the target application environment.

Selection Notes

Select this component when simultaneous monitoring of multiple voltage rails is required without adding external passive components. The adjustable input option allows customization for non-standard voltage levels. Consider the open-drain output structure for level shifting or wired-OR configurations. Verify that the 2.5% accuracy specification aligns with the system's tolerance requirements for reliable reset assertion.

Part Context

The MAX6338 series belongs to Maxim Integrated's family of microprocessor supervisory circuits designed for power management applications. These devices provide essential protection by detecting out-of-range voltage conditions and asserting reset signals to protect sensitive digital logic. The uMAX package offers a compact footprint for space-constrained PCB layouts while maintaining robust performance across industrial temperature ranges.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX6338 family such as MAX6338CUB or MAX6338MUB which may offer different fixed threshold combinations. Verify that any substitute maintains the same 10-pin uMAX package and open-drain output characteristics to ensure seamless board replacement.