Product Overview: MAX809SQ438T1G

The MAX809SQ438T1G is a microprocessor (μP) supervisory circuit designed and manufactured by ON Semiconductor. This compact component is engineered to monitor the power supplies in μP and digital systems, providing a significant function in enhancing system reliability. It ensures that the μP boots up in a predictable state every time the system is powered on or reset.

Key Features

• Precision Monitoring: The device features a precision voltage monitor with a factory-set reset threshold voltage of 4.38V, tailored for 5V-powered systems.
• Low Power Consumption: With a low supply current of 20 μA (typical), the MAX809SQ438T1G is optimized for power-sensitive applications.
• Reset Output: The active-low, open-drain RESET output remains asserted for a minimum of 140 ms after VCC has risen above the reset threshold level, ensuring proper system reset.
• Temperature Range: The operating temperature range of the device spans from -40°C to +85°C, suitable for commercial and industrial environments.
• Compact SOT-23 Packaging: Encased in a small SOT-23 package, the MAX809SQ438T1G is ideal for space-constrained applications.

Applications

The MAX809SQ438T1G is versatile and can be used in a wide array of applications where reliable system reset is critical. It is frequently used in:

• Computers and Controllers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Automotive Systems

Quality and Reliability

ON Semiconductor is known for its commitment to quality, and the MAX809SQ438T1G is no exception. The device is fabricated with high-quality materials and tested rigorously to meet ON Semiconductor's stringent standards for performance and reliability.

Conclusion

In conclusion, the MAX809SQ438T1G supervisory circuit is a crucial component for systems that require consistent and reliable operation. With its precision monitoring capabilities, low power consumption, and compact packaging, it is an excellent choice for designers looking to enhance the safety and stability of their digital systems.