MAX6339AUT

Overview

The MAX6339AUT is a quad voltage microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors four independent supply voltages and provides active-low reset signals when thresholds are exceeded. The device operates within a supply voltage range of 1.2V to 5.5V and features a fixed 200ms reset timeout period. It utilizes an open-drain output configuration and is housed in a compact SOT-23-6 package. The component supports adjustable threshold voltages for one channel, while the other three channels offer fixed options such as 1.26V, 3.15V, 4.75V, and 5V. It functions reliably across an industrial temperature range from -40°C to +85°C with 5% accuracy.

Feature Summary

• Monitors four independent power supply rails simultaneously
• Provides active-low reset signal with open-drain output
• Includes one adjustable voltage threshold channel
• Features fixed 200ms reset delay timer

Applications

• Multi-rail power system monitoring in embedded systems
• Voltage supervision for complex digital logic circuits
• Industrial control board power integrity verification
• Telecommunications equipment power management

Procurement Notes

Verify the specific suffix 'A' against official datasheets to confirm the exact threshold voltage combination, as variations exist within the MAX6339 family. Confirm the package type is SOT-23-6 and check RoHS compliance status. Ensure the operating temperature range meets your application requirements of -40°C to +85°C. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when simultaneous monitoring of four distinct voltage levels is required in a space-constrained design. The adjustable threshold option allows customization for non-standard rail voltages. Consider the open-drain output compatibility with your system's logic levels. Verify that the 200ms reset delay aligns with your system's startup timing constraints. Compare power consumption if battery backup is involved, though manual reset and watchdog features are absent.

Part Context

The MAX6339 series belongs to Analog Devices' portfolio of microprocessor supervisory circuits designed for reliable system protection. These devices ensure stable operation by detecting under-voltage conditions and initiating resets. The AUT variant specifically denotes a particular pinout and threshold configuration within the broader MAX6339 family, which includes variants with different fixed thresholds and packaging options like MSOP.

Replacement Considerations

Check for ADM6339 variants or other Maxim quad supervisors with matching SOT-23-6 footprints. Verify electrical compatibility regarding threshold voltages and reset timing before substitution.