MAX6328UR27-T

Overview

The MAX6328UR27+T is a voltage supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of up to 5.5 V and features a threshold voltage of 2.7 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 draws 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 a SOT-23-3 package.

Feature Summary

• Ultra-low-power operation with 500 nA supply current
• Active low open-drain reset output
• Compact SOT-23-3 surface-mount packaging

Applications

• Portable battery-powered equipment
• Microprocessor system supervision
• Battery charger circuits

Procurement Notes

Verify the exact suffix against official documentation, as standard variants often include a plus sign indicating RoHS compliance. Confirm availability status through authorized distributors, as some listings indicate restricted supply or discontinuation. Ensure the ordering part number matches the specific threshold voltage and package type required for the design.

Selection Notes

Select this component when ultra-low quiescent current is critical for extending battery life in portable applications. The fixed 2.7 V threshold suits systems requiring supervision of 3 V logic rails. Verify that the open-drain output configuration aligns with the target microcontroller's input requirements without needing additional pull-up components if internal pulls are sufficient.

Part Context

This part belongs to the MAX6328 series of ultra-low-power reset circuits. The series offers various threshold voltages and packages to accommodate different system voltage levels and space constraints. It is designed for simple reset or power-fail monitoring in embedded systems where power efficiency and small footprint are primary design drivers.

Replacement Considerations

Compatible substitutes within the same family include MAX6328XR27+T and MAX6328UT27+T, which share identical electrical specifications but differ in package type (SC-70 or SOT-23). Cross-reference datasheets to ensure pinout compatibility and verify that the replacement part meets the same thermal and voltage ratings.