MAX6324BUT29+T

Supervisors Overview

The MAX6324BUT29+T is a microprocessor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors a single power supply channel with a fixed reset threshold voltage of 2.93V and an accuracy of ±1.5%. The device features an active-low open-drain RESET output, ensuring valid assertion down to VCC = +1.2V. It includes a manual reset input and a watchdog timer with a typical timeout period of 180ms. Operating from a supply voltage range up to 5.5V, it consumes 27µA of supply current and functions within a temperature range of -40°C to +125°C in a surface-mount SOT-23-6 package.

Supervisors Feature Summary

• Integrates a windowed watchdog timer for monitoring processor activity outside expected operational windows
• Provides a manual reset input allowing external assertion of the reset signal
• Features an open-drain RESET output that remains asserted low when supply voltage falls below the threshold or upon manual trigger

Supervisors Applications

• Monitoring digital system power supplies
• Microprocessor (µP) activity supervision
• Embedded system reset management

Supervisors Procurement Notes

Verify the manufacturer designation as Analog Devices Inc. / Maxim Integrated on the component marking. Confirm the specific suffix 'BUT29' corresponds to the 2.93V threshold and '+T' indicates tape-and-reel packaging. Ensure RoHS compliance documentation matches the '+' suffix requirement. Cross-reference the datasheet revision to confirm pinout and electrical characteristics align with your design specifications before finalizing procurement orders.

Supervisors Selection Notes

Select this component when an open-drain output is required for wired-OR configurations or level shifting. The fixed 2.93V threshold suits systems requiring precise monitoring near 3.3V logic levels. The inclusion of both a watchdog timer and manual reset input makes it suitable for complex digital systems needing comprehensive fault detection. Consider the 180ms timeout duration against system startup requirements and the 27µA quiescent current for battery-sensitive applications.

Supervisors Part Context

This part belongs to the MAX6324 family of µP supervisory circuits, which also includes variants with push-pull outputs like the MAX6323. The MAX6324 series offers multiple laser-trimmed thresholds ranging from 2.32V to 4.63V. The 'B' prefix typically denotes improved accuracy specifications compared to standard versions. These devices are designed to replace older supervisor ICs while offering integrated watchdog functionality in a compact SOT-23-6 package.

Supervisors Replacement Considerations

Direct functional substitutes include other MAX6324 variants with different threshold voltages if the 2.93V setting is flexible. For identical threshold replacement, verify availability of MAX6324BUT29+T equivalents from authorized distributors. Components from the MAX6323 series offer similar features but require adaptation due to push-pull output differences.