MAX6328UR31+T

Overview

The MAX6328UR31+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 of up to 5.5V and features a fixed reset threshold of 3.1V. The device provides an active-low, open-drain output with a typical reset timeout of 185ms. It consumes only 500nA of quiescent current, ensuring minimal power drain in battery-operated systems. The component is housed in a compact SOT-23-3 surface-mount package and supports operation across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Ultra-low power consumption suitable for energy-constrained applications
• Fixed factory-set reset threshold eliminates external resistor adjustments
• Open-drain output configuration allows flexible interfacing with various logic levels

Applications

• Portable electronic devices requiring extended battery life
• Embedded microcontroller system power supervision
• Industrial control units operating in harsh environments

Procurement Notes

Verify the specific suffix UR31 to confirm the 3.1V threshold setting, as the MAX6328 series offers multiple voltage options. Ensure the ordering part number includes the +T designation for tape-and-reel packaging if automated assembly is required. Confirm RoHS compliance status matches project requirements before finalizing procurement orders.

Selection Notes

Select this component when a precise 3.1V monitoring point is needed without external calibration. Compare against other MAX6328 variants if different thresholds are required. Consider the open-drain output limitation if a push-pull signal is strictly necessary for the downstream logic interface.

Part Context

This part belongs to the MAX6328 family of ultra-low-power voltage supervisors. It shares the same pinout and general functionality with other members like the MAX6328UR30+T but differs in its internal reference voltage. The series is widely used in portable electronics due to its small footprint and low standby current characteristics.

Replacement Considerations

Direct substitutes include other MAX6328 variants with different thresholds (e.g., MAX6328UR30+T) if the voltage level can be adjusted in the design. Cross-reference tools should be used to identify parametrically similar parts from other manufacturers if availability is constrained.