MAX6327UR31

Supervisors Overview

The MAX6327UR31 is a 3-pin ultra-low-power supervisory circuit from the MAX6327X series, manufactured by Analog Devices Inc./Maxim Integrated. It monitors a single voltage input and provides an active-high, push-pull reset output when the supply voltage drops below a threshold of 3.1V. The device features a fixed reset delay time of 280ms and operates within a power supply range up to 5.5V. It draws a typical operating current of 500nA and functions reliably across a temperature range of -40°C to +85°C. Packaged in a compact SC-70-3 surface-mount format, it eliminates external components for portable applications.

Supervisors Feature Summary

• Provides active-high push-pull reset signaling for reliable digital system supervision
• Ultra-low power consumption suitable for battery-operated portable equipment
• Compact SC-70-3 package design minimizes board space requirements

Supervisors Applications

• Portable consumer electronics requiring low standby current
• Microprocessor and digital system power supply monitoring
• Battery-powered devices with strict power budget constraints

Supervisors Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free specifications against current datasheets. Check for obsolescence notices or lifecycle changes prior to procurement. Ensure packaging details match project requirements for surface-mount assembly processes.

Supervisors Selection Notes

Select this part when an active-high reset signal is required rather than the common active-low configuration. Verify that the 3.1V threshold aligns with the specific supply rail being monitored. Consider the 280ms delay duration against system startup timing requirements. Evaluate the SC-70-3 footprint availability against existing PCB layout constraints.

Supervisors Part Context

This component belongs to the MAX6327X family of microprocessor supervisory circuits designed for 2.5V, 3V, 3.3V, and 5V systems. Unlike the MAX6326 which offers active-low outputs, the MAX6327 variant specifically provides active-high functionality. The family is engineered to replace discrete comparator solutions, offering factory-trimmed thresholds and integrated hysteresis for noise immunity.

Supervisors Replacement Considerations

MAX6327XR31+T serves as a direct pin-compatible alternative within the same series.