MAX6328UR27

Overview

The MAX6328UR27+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 fixed 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 consumes a maximum operating current of 500 nA and functions across a temperature range of -40°C to +85°C. Packaged in a SOT-23-3 surface-mount case, it monitors a single input without manual reset or watchdog capabilities.

Feature Summary

• Ultra-low-power operation with 500 nA current consumption for battery efficiency
• Fixed 2.7 V threshold voltage ensures precise power monitoring
• Compact SOT-23-3 package suitable for space-constrained designs

Applications

• Portable electronic devices requiring extended battery life
• Embedded systems needing reliable power-on reset signals
• Microcontroller-based circuits requiring voltage supervision

Procurement Notes

Verify the complete part number including suffixes such as +T for tape-and-reel packaging when ordering. Confirm RoHS compliance status through official manufacturer documentation. Ensure the specific threshold voltage variant matches system requirements. Check availability status as distribution may vary by region. Validate supplier authenticity to prevent counterfeit components.

Selection Notes

Select this component when a fixed 2.7 V threshold is required for voltage monitoring. Consider the 185 ms reset delay for timing-sensitive applications. Evaluate the open-drain output compatibility with downstream logic levels. Assess the 500 nA quiescent current against total system power budgets. Verify thermal performance within the specified -40°C to +85°C operating range.

Part Context

The MAX6328 series includes various threshold voltages like UR28 and UR30 variants. These share identical pinouts and functional characteristics but differ in trip points. The UR27 specifically targets 2.7 V rail monitoring. Other family members offer different reset delays or additional features like manual reset inputs.

Replacement Considerations

MAX6328UR28+T offers a 2.8 V threshold. MAX6328UR30+T provides a 3.0 V threshold. Both maintain similar package and electrical characteristics.