MAX6390XS17D4

Supervisors Overview

The MAX6390XS17D4 is a single-channel microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors power-supply voltages within the +1.8V to +5.0V range, featuring a factory-set reset threshold voltage of 1.7V. The device operates with a supply current of only 3µA at +1.8V and utilizes an SC-70-4 package. It provides an active-low open-drain reset output that asserts when the monitored voltage falls below the threshold. The circuit includes a minimum reset timeout period to ensure stable power-up sequencing.

Supervisors Feature Summary

• Monitors power-supply voltages from +1.8V to +5.0V with low quiescent current consumption
• Provides active-low open-drain reset output for reliable system supervision
• Ensures stable power-up sequencing through a defined minimum reset timeout period

Supervisors Applications

• Microprocessor power-supply monitoring in embedded systems
• Battery-powered portable devices requiring low standby current
• Industrial control systems needing voltage supervision under harsh conditions

Supervisors Procurement Notes

Verify the exact suffix configuration against the manufacturer's official datasheet to confirm pinout and electrical characteristics. Ensure compatibility with the target PCB footprint, specifically the SC-70-4 package dimensions. Confirm RoHS compliance status if required by regulatory standards. Cross-reference the part number with authorized distributors to avoid counterfeit components. Validate the reset threshold voltage matches the specific application requirements before finalizing procurement.

Supervisors Selection Notes

Select this component when a single-channel supervisor with a fixed 1.7V threshold is required. Consider the SC-70-4 package size constraints for compact designs. Evaluate the 3µA supply current suitability for battery-operated applications. Verify that the open-drain output interface aligns with the downstream logic levels. Compare alternative threshold voltages if the 1.7V setting does not match the monitored rail.

Supervisors Part Context

This part belongs to the MAX6381–MAX6390 family of microprocessor supervisory circuits. These devices are designed for low-voltage, low-power applications. The family offers various reset thresholds and timeout delays. The MAX6390 variant specifically features an open-drain output. The series supports operation across industrial temperature ranges.

Supervisors Replacement Considerations

Check for MAX6390XS17D4+T as a potential lead-free equivalent. Verify functional compatibility with other MAX6390 variants having identical 1.7V thresholds. Ensure package pinout alignment before substitution.