MAX6389XS17D3

Overview

The MAX6389XS17D3 is a dual-channel microprocessor supervisory circuit in an SC-70 package. It monitors two power-supply inputs with a factory-set threshold of 1.67V. The device features an active-low, open-drain reset output and a minimum timeout delay of 280ms. Operating voltage ranges from 1V to 5.5V with supply current of 7µA at 1.8V. Reset accuracy is ±2.5% over the -40°C to +125°C temperature range.

Feature Summary

• Dual-channel voltage supervision for independent monitoring of multiple power rails
• Active-low open-drain reset output compatible with various logic families
• Guaranteed valid reset state down to 1V supply voltage

Applications

• Portable electronic devices requiring low-power voltage monitoring
• Battery-operated systems needing reliable power-fail detection
• Embedded controllers requiring supervised startup sequences

Procurement Notes

Verify exact availability through authorized Analog Devices distributors as stock levels fluctuate. Confirm RoHS compliance status for specific manufacturing lots. Ensure the SC-70 package variant matches your PCB footprint requirements before finalizing orders.

Selection Notes

Select this component when dual-channel supervision is required in a minimal footprint. The 1.67V threshold suits low-voltage digital cores. Verify that the open-drain output configuration aligns with your system's pull-up resistor strategy and noise immunity needs.

Part Context

Part of the MAX6381–MAX6390 family of single and dual low-voltage supervisors. Shares common electrical characteristics with siblings like MAX6389XS31D3 but differs in threshold voltage and channel count. Designed for space-constrained applications where power efficiency is critical.

Replacement Considerations

Direct substitutes include other MAX6389 variants with different thresholds or output types. Cross-reference pinouts and electrical specs carefully. No guaranteed drop-in replacements exist without verifying functional equivalence.