MAX6328UR23+T

Overview

The MAX6328UR23+T is a voltage supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of up to 5.5 V and features a threshold voltage of 2.32 V with an accuracy of 1.5%. The device provides an active low, open drain output with a reset delay time of 185 ms. It consumes a working power supply current of 500 nA and has a maximum power dissipation of 320 mW. The component functions in temperatures from -40°C to +85°C and is housed in an SOT-23-3 package.

Feature Summary

• Ultra-low-power operation with 500 nA quiescent current
• Precision voltage monitoring with 1.5% threshold accuracy
• Active low open-drain reset output for system reliability

Applications

• Battery-powered portable electronics
• Microprocessor system supervision
• Voltage monitoring in embedded systems

Procurement Notes

Verify the specific suffix UR23 to confirm the 2.32 V threshold voltage, as this family offers multiple threshold options. Ensure the SOT-23-3 package matches your PCB footprint requirements. Confirm RoHS compliance status through official documentation before integration. Check for any regional distribution restrictions or obsolescence notices directly from the manufacturer.

Selection Notes

Select this component when ultra-low standby current is critical for battery life extension. The fixed 2.32 V threshold suits applications requiring precise monitoring of 3.3 V or similar nominal rails. Consider the 185 ms reset delay for timing-sensitive logic initialization. Verify that the open-drain output capability aligns with the target system's pull-up configuration.

Part Context

This part belongs to the MAX6328U series of ultra-low-power reset circuits. It is designed for simple voltage supervision without manual reset or watchdog timer functionality. The series utilizes internal trimmed resistor networks to set trip thresholds, eliminating external component adjustments.

Replacement Considerations

Other MAX6328 variants with different threshold suffixes (e.g., UR30) may be considered if voltage levels differ. Cross-reference MXD1818 series for low-power alternatives with higher temperature ranges.