MAX6389XS16D3+

Overview

The MAX6389XS16D3+ is a single-channel microprocessor supervisory circuit in an SC-70-4 package. It monitors supply voltages with a fixed reset threshold of 1.58V and features an active-low open-drain output. The device operates within a voltage range of 1V to 5.5V, consuming only 7µA of supply current. It provides a standard 280ms reset timeout period and maintains ±2.5% accuracy over the industrial temperature range of -40°C to +125°C.

Feature Summary

• Monitors power-supply voltages from 1V to 5.5V while maintaining ultra-low quiescent current consumption
• Provides factory-set reset thresholds with high accuracy across the full operating temperature range
• Features an active-low open-drain reset output that remains valid down to 1V input voltage

Applications

• Portable battery-powered equipment requiring low standby current
• Microprocessor systems needing reliable brown-out detection
• Handheld devices with strict space constraints due to compact packaging

Procurement Notes

Verify the specific suffix D3 against official documentation to confirm the exact pinout configuration and electrical characteristics. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer's latest datasheet revision to validate all parameters before finalizing procurement specifications.

Selection Notes

Select this component when a single-channel supervision function with an open-drain output is required. The fixed 1.58V threshold suits applications monitoring lower voltage rails. Consider alternative models if manual reset inputs or push-pull outputs are necessary for the system design.

Part Context

This part belongs to the MAX6381–MAX6390 family of low-voltage, low-power microprocessor reset circuits. These devices are designed to monitor power supplies and assert a reset signal when voltages fall below specified thresholds. The series offers various output types and timeout periods to accommodate diverse embedded system requirements.

Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the same series. Verify that substitute parts match the 1.58V threshold and open-drain output configuration.