MAX6328XR31+

Overview

The MAX6328XR31+T is a supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated, designed for monitoring single voltage rails. It operates within a supply voltage range up to 5.5 V and features an active-low open-drain output. The device triggers a reset at a threshold of 3.1 V with a typical delay of 185 ms. It consumes only 500 nA of quiescent current and maintains accuracy within 1.5%. The component is available in SC-70-3 packaging and supports surface mount installation across a temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low power consumption suitable for battery-operated systems
• Active-low open-drain reset output for flexible interfacing
• High precision voltage monitoring with tight tolerance
• Compact surface-mount package design

Applications

• Portable electronic devices requiring extended battery life
• Embedded systems needing reliable power-on reset signals
• Industrial control units operating in varying thermal conditions
• Communication equipment monitoring critical voltage levels

Procurement Notes

Verify the complete part number including suffixes such as +T for reel packaging when ordering. Confirm RoHS compliance status and manufacturing origin through official distributor channels. Ensure compatibility with existing PCB footprint dimensions for SC-70-3 packages. Check for any recent product change notices or lifecycle status updates from Analog Devices prior to final procurement decisions.

Selection Notes

Select this component when a fixed 3.1 V threshold is required for system supervision. Consider the 185 ms reset delay for timing-sensitive applications. Evaluate the open-drain output capability against pull-up resistor requirements in the target circuit design. Compare quiescent current specifications against other low-power alternatives if energy efficiency is a primary constraint.

Part Context

This device belongs to the MAX6328 family of ultra-low-power reset circuits. It shares functional similarities with other members like the MAX6328UR30+T but differs in specific threshold voltages determined by internal reference settings. The series is widely used in consumer electronics and industrial applications where space constraints and power efficiency are critical design factors.

Replacement Considerations

Direct substitutes include MAX6328XR30+T and MAX6328XR33+T for similar thresholds. Cross-reference with MAX6328UR31+T for identical electrical characteristics in alternative packaging. Verify pinout compatibility before replacing components in existing designs.