MAX6328UR26

Overview

The MAX6328UR26 is a microprocessor supervisory circuit featuring a fixed reset threshold voltage of 2.63V. It provides a manual reset input and an open-drain reset output. The device operates within a supply voltage range of 1.6V to 5.5V. It includes a watchdog timer with a timeout period selectable via external components. The unit is housed in a 6-pin SOT-23 package.

Feature Summary

• Fixed 2.63V reset threshold ensures precise monitoring of supply voltage levels
• Manual reset input allows for system initialization control
• Watchdog timer functionality prevents software lockups through external timing components
• Open-drain reset output simplifies interface with various logic families

Applications

• Portable battery-powered equipment requiring low-voltage supervision
• Embedded systems needing reliable power-on reset sequences
• Microcontroller-based designs with watchdog timer requirements
• Industrial control modules operating in harsh electrical environments

Procurement Notes

Verify the specific suffix UR26 corresponds to the 2.63V threshold and SOT-23-6 package configuration. Confirm manufacturing source is Analog Devices or Maxim Integrated. Check for RoHS compliance markings on packaging documentation. Ensure datasheet revision matches current specifications before integration into design files.

Selection Notes

Select this component when a fixed 2.63V threshold is required rather than adjustable options. Consider the SOT-23-6 package size constraints against available board space. Evaluate if the manual reset feature aligns with system startup requirements. Verify that the open-drain output capability meets downstream logic level needs without additional pull-up resistors.

Part Context

This part belongs to the MAX6328 family of supervisory circuits designed for low-voltage applications. The family offers various threshold voltages and package options to suit different system architectures. The UR26 variant specifically targets applications requiring a 2.63V trip point. It complements other Maxim Integrated power management solutions for complete system protection strategies.

Replacement Considerations

Direct substitutes include other MAX6328 variants with different threshold voltages if voltage levels differ. Cross-reference with MAX6341 series for similar functionality in alternative packages. Verify pin compatibility before swapping to ensure no hardware redesign is necessary. Consult official replacement guides for discontinued lot information.