MAX6839XSD3

Supervisors Overview

The MAX6839XSD3 is a microprocessor supervisory circuit designed for low-voltage power supply monitoring in digital systems. It operates within a supply voltage range of +1.2V to +1.8V and features an adjustable overvoltage threshold. The device provides a push-pull active-high reset output with a fixed timeout delay of 30ms. It consumes only 16µA of quiescent current and functions reliably across an industrial temperature range from -40°C to +85°C. Packaged in a compact SC-70-4 surface-mount case, it eliminates the need for external components.

Supervisors Feature Summary

• Monitors low-voltage power supplies to ensure system reliability without external adjustments
• Provides a push-pull active-high reset signal when supply voltage drops below the preset threshold
• Maintains reset assertion for a fixed timeout period after voltage recovery or manual reset deassertion

Supervisors Applications

• Microprocessor (µP) supervisory circuits
• Digital system power supply monitoring
• Low-voltage battery-powered devices

Supervisors Procurement Notes

Verify the specific suffix against official documentation, as variations like XSD2+T indicate tape-and-reel packaging while others may differ. Confirm RoHS compliance status and lead-free designation through the manufacturer's datasheet. Check availability constraints, as this component may be subject to limited stock or special order requirements depending on the distributor.

Supervisors Selection Notes

Select this component for applications requiring ultra-low voltage operation between 1.2V and 1.8V. Ensure the required reset threshold matches the available adjustable options. Verify that the push-pull active-high output configuration aligns with the target microprocessor input requirements. Consider the 30ms timeout delay to accommodate system startup times.

Supervisors Part Context

The MAX6839 belongs to the MAX6832–MAX6840 family of ultra-low-voltage SC70 voltage detectors and µP reset circuits. This series is engineered to provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +1.2V to +1.8V powered circuits. The family offers various timeout periods and output configurations to suit different system needs.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.