MAX6327UR23

Overview

The MAX6327UR23 is a microprocessor supervisory circuit from the MAX6326 family, designed for portable and battery-powered systems. It features an active-high push-pull reset output, distinguishing it from the active-low variants in the series. The device monitors supply voltages with a fixed threshold of 2.3V and provides a minimum power-on reset pulse width of 100ms. Operating within a voltage range up to 5.5V, it draws ultra-low supply current of 1µA maximum. Packaged in a compact SOT-23-3 form factor, it ensures reliable system resets without external components.

Feature Summary

• Active-high push-pull reset output configuration
• Ultra-low 1µA maximum supply current consumption
• Factory-trimmed precision monitoring thresholds
• Minimum 100ms power-on reset pulse width

Applications

• Portable equipment requiring low standby current
• Battery-powered digital systems
• Microprocessor power-supply supervision
• 3V and 5V powered circuit reliability enhancement

Procurement Notes

Verify the specific suffix 'UR23' against official Analog Devices documentation to confirm the exact 2.3V threshold and package type. Ensure compatibility with active-high logic requirements, as other family members may offer active-low outputs. Confirm availability status through authorized distributors, as supply constraints may apply to legacy Maxim Integrated products.

Selection Notes

Select this component when an active-high reset signal is required for system initialization. Compare against MAX6326 (active-low) or MAX6328 (open-drain) if output drive characteristics differ from design needs. Verify that the 2.3V threshold aligns with the monitored rail's brown-out protection requirements. Consider the SOT-23-3 package size for space-constrained PCB layouts.

Part Context

Part of the MAX6326/MAX6327/MAX6328 family of ultra-low-power reset circuits. These devices eliminate external components by integrating precision bandgap references and comparators. The family covers various output types and thresholds to support 2.5V, 3V, 3.3V, and 5V systems in industrial and consumer applications.

Replacement Considerations

MAX6326UR23+T offers identical electrical performance but with an active-low output. MAX6328UR23+T provides an open-drain output variant. Cross-reference datasheets to ensure output stage compatibility with the target microprocessor reset input before substitution.