MAX809SQ263T1G

Supervisors Overview

The MAX809SQ263T1G is a microprocessor reset monitor from onsemi, designed for system voltage supervision. It operates within a supply voltage range of 1.2V to 5.5V and features a typical reset threshold of 2.63V. The device provides a low-level active push-pull output with a fixed reset delay time of 460ms. It consumes a maximum quiescent current of 1µA at 3.3V. The component is housed in an SC-70-3 (SOT-323) surface-mount package and supports an operating temperature range from -40°C to +105°C.

Supervisors Feature Summary

• Provides automated reset signals for digital systems when monitored voltage drops below the specified threshold.
• Features ultra-low power consumption suitable for battery-operated applications.
• Includes factory-calibrated reset timer to ensure stable processor initialization.

Supervisors Applications

• Digital system voltage monitoring
• Microprocessor reset circuits
• Battery-powered portable devices

Supervisors Procurement Notes

Verify the specific suffix 'SQ' indicates automotive qualification requirements if applicable to your design. Confirm the exact threshold voltage variant matches the target supply rail. Check RoHS compliance status as indicated in official documentation. Ensure the SC-70-3 package dimensions fit the PCB layout constraints. Validate that the operating temperature range meets environmental specifications.

Supervisors Selection Notes

Select this part when a precise 2.63V reset threshold is required for low-voltage logic systems. Consider the low quiescent current for energy-sensitive designs. Verify compatibility with the microprocessor's reset input polarity, as this model outputs a low-active signal. Ensure the supply voltage range covers the system's operational limits without exceeding the maximum rating.

Supervisors Part Context

This component belongs to the MAX809 family of very low supply current 3-pin microprocessor reset monitors. The series is optimized for suppressing fast transient faults on VCC lines. It serves as a cost-effective solution for providing reliable reset signals in digital systems without requiring external components.

Supervisors Replacement Considerations

Check for MAX809 variants with different threshold voltages or manual reset capabilities. Verify pinout compatibility with SOT-323 packages. Confirm electrical parameters match system requirements before substitution.