MAX6389XS31D1+T

Supervisors Overview

The MAX6389XS31D1+T is a dual-input voltage supervisory circuit from the MAX6389XS series, manufactured by Analog Devices / Maxim Integrated. It monitors two power-supply inputs within a supply voltage range of up to 5.5 V. The device features an active-low, open-drain reset output with a fixed threshold voltage of 3.08 V and an accuracy of 2.5%. It operates with a quiescent current of 7 uA and provides a reset delay time of 2 ms. The component is housed in an SC-70-4 package and supports operation across a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Dual-input voltage monitoring capability for independent power rails
• Active-low open-drain reset output configuration
• Low-power operation with minimal supply current consumption
• Compact surface-mount packaging suitable for space-constrained designs

Supervisors Applications

• Monitoring multiple voltage rails in embedded systems
• Power supervision in portable electronic devices
• Industrial control system voltage integrity verification
• Consumer electronics power management circuits

Supervisors Procurement Notes

Verify the specific suffix D1 against official datasheets to confirm the exact threshold voltage and pinout configuration, as variations exist within the MAX6389XS family. Confirm RoHS compliance status through manufacturer documentation. Ensure the SC-70-4 package dimensions match your PCB footprint requirements. Check availability status directly with authorized distributors as supply may be limited.

Supervisors Selection Notes

Select this component when dual-voltage supervision is required with low power consumption. The 3.08 V threshold suits applications monitoring 3.3 V or similar logic levels. Verify that the open-drain output interface is compatible with the downstream microprocessor or controller input requirements. Consider the 2 ms reset delay relative to system startup timing constraints.

Supervisors Part Context

This part belongs to the MAX6389XS series of single/dual low-voltage, low-power microprocessor reset circuits. These devices are designed to monitor power-supply voltages and assert a reset signal when voltages fall below specified thresholds. The series offers various threshold options and timeout delays to accommodate different system requirements.

Supervisors Replacement Considerations

Consult official substitution guides for equivalent dual-input supervisors. Verify compatibility of threshold voltages, output types, and package dimensions before replacing.