MAX6520EUR-T

Overview

The MAX6520EUR-T is a precision voltage supervisor with an integrated watchdog timer and manual reset input, manufactured by Analog Devices Inc. under the Maxim Integrated brand. This component operates within a supply voltage range of 1.62V to 5.5V, providing accurate monitoring for microprocessors and digital systems. It features a fixed output delay time of 140ms typical, ensuring stable power-up sequencing. The device includes a push-pull active-low reset output and supports multiple reset types including open-drain or push-pull configurations depending on the specific variant suffixes not detailed here but inherent to the family. It is housed in an 8-pin SOIC package.

Feature Summary

• Integrates a watchdog timer with a timeout period selectable via external components to prevent software lockups.
• Includes a manual reset input allowing system initialization control independent of power conditions.
• Provides precise voltage monitoring with guaranteed accuracy across temperature ranges for reliable system supervision.

Applications

• Microprocessor and microcontroller power supply monitoring
• Embedded systems requiring watchdog functionality
• Portable electronic devices needing low-voltage supervision

Procurement Notes

Verify the exact suffix against the manufacturer's current datasheet to confirm pinout and electrical characteristics. Ensure the ordering part number matches the required package type and temperature grade. Cross-reference with official Analog Devices documentation to validate availability and lead times through authorized distributors only.

Selection Notes

Select this component when a combined voltage supervisor and watchdog timer are required in a compact form factor. Consider the operating voltage range relative to the target system's rail. Evaluate the need for a manual reset input versus standard power-on reset behavior. Confirm compatibility with the microprocessor's reset requirements regarding pulse width and timing.

Part Context

This part belongs to the MAX652x series of supervisors, which are designed for general-purpose power management in digital circuits. The EUR-T designation indicates an 8-lead SOIC package with tape-and-reel packaging for automated assembly. It complements other Maxim Integrated supervisory solutions offering similar integration levels.

Replacement Considerations

Check for direct cross-references from manufacturers like STMicroelectronics or NXP that offer equivalent voltage supervisors with integrated watchdogs. Verify pin-to-pin compatibility and electrical parameter alignment before substitution.

FAQ

What determines the watchdog timeout period?

The watchdog timeout period is determined by an external capacitor connected to the WDI pin, as specified in the electrical characteristics table of the datasheet.

Can the reset output be configured differently?

Yes, the reset output can be configured as either open-drain or push-pull depending on the specific part variant and external circuitry connections defined in the application information.