MAX6327UR31+T

Overview

The MAX6327UR31+T is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single voltage input and provides an active-high, push-pull reset output. The device operates within a supply voltage range up to 5.5V with a typical quiescent current of 500nA. It features a fixed threshold voltage of 3.1V and a reset delay time of 280ms. The component is housed in a compact SC-70-3 package and supports surface-mount installation. It functions without manual reset or watchdog timer capabilities.

Feature Summary

• Provides reliable power-supply monitoring for microprocessor and digital systems
• Delivers an active-high push-pull reset signal upon undervoltage detection
• Designed to ignore fast transients on the VCC supply line
• Ensures correct state operation down to 1V supply voltage

Applications

• Portable equipment requiring ultra-low power consumption
• Microprocessor system power supervision
• Digital system voltage monitoring
• Battery-powered circuit protection

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices. Ensure the SC-70-3 package matches design requirements. Validate that the active-high output configuration aligns with target logic levels. Review datasheet specifications for thermal and electrical limits before integration.

Selection Notes

Select this part when an active-high reset signal is required for system initialization. Compare against MAX6326 and MAX6328 variants if open-drain or active-low outputs are preferred. Consider the 500nA supply current for battery life optimization. Verify that the 3.1V threshold suits the monitored rail. Check availability as distribution status may vary by region.

Part Context

This component belongs to the MAX6327X series of uPower Reset Circuits. It shares functional similarities with the MAX6326, MAX6328, MAX6346, MAX6347, and MAX6348 families. These devices eliminate external components for standard voltage rails. The MAX6327 specifically offers an active-high push-pull output, distinguishing it from the active-low counterparts in the same series.

Replacement Considerations

Public confirmed substitute part numbers: MAX6327XR31+T, MAX6327UR30+T.