Maxim Integrated MAX809MEXR+T Microprocessor Reset Circuit

The Maxim Integrated MAX809MEXR+T is a sophisticated microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a crucial function by ensuring that the µP and its peripherals are reset properly during a power-up, power-down, or brown-out condition. This tiny, three-pin device is an essential component for maintaining system reliability and preventing software execution errors.

Key Features

• Precision Monitoring: The MAX809MEXR+T offers precise monitoring of its system's power supply with a factory-trimmed reset threshold voltage, ensuring accurate and reliable operation.
• Low Power Consumption: Designed for power-sensitive applications, this device consumes minimal power, making it ideal for portable and battery-operated equipment.
• Manual Reset Input: It includes a manual reset input that allows the user to trigger a system reset with an external push-button or logic signal, providing additional system control.
• Reset Timeout: The MAX809MEXR+T guarantees a minimum power-on reset pulse width of 140ms, which ensures that the system's microprocessor is properly reset after power is restored.
• Compact SOT-23 Packaging: Housed in a small SOT-23 package, this device is suitable for space-constrained applications, offering an efficient use of PCB real estate.

Applications

The MAX809MEXR+T is versatile and can be used in a wide array of applications, including:

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

With its robust feature set, the Maxim Integrated MAX809MEXR+T is a reliable solution for systems that require precise voltage monitoring and reset capabilities. Its compact size, low power consumption, and manual reset feature make it an excellent choice for designers looking to enhance the operational stability of their digital systems.

Whether used in consumer electronics, automotive applications, or industrial control systems, the MAX809MEXR+T helps maintain the integrity of the system it serves, ensuring that devices operate as intended even in the face of unpredictable power supply conditions.