Maxim Integrated's MAX819LESA Microprocessor Supervisory Circuit

The MAX819LESA is a compact, highly integrated microprocessor supervisory circuit designed by Maxim Integrated to monitor power supplies in microprocessor and digital systems. It provides a significant level of system reliability and accuracy required in critical applications. This supervisory circuit ensures that the microprocessor always starts up in a known state and helps in preventing code execution errors during power-up, power-down, or brownout conditions.

Key Features

• Precision Monitoring: The MAX819LESA offers precise monitoring of the power supply with a factory-set reset threshold voltage, ensuring reliable operation.
• Low Power Consumption: It is designed for low power consumption, which makes it suitable for battery-operated applications.
• Manual Reset Input: A manual reset input is provided, which enables a reset to be triggered with an external switch or logic signal, offering additional control to the user.
• Reset Timeout: The device features a 140ms min reset active timeout period, providing a reliable reset signal duration.
• Compact Package: The MAX819LESA comes in an 8-pin SOIC package, making it easy to integrate into space-constrained designs.

Applications

The versatility of the MAX819LESA makes it ideal for a wide range of applications, including:

• Computers and Controllers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Critical μP and μC Power Monitoring

Technical Specifications

The MAX819LESA operates over a wide supply voltage range and includes additional features such as an active-low reset output and a debounced manual reset input. The device's operating temperature range of 0°C to +70°C ensures reliable performance across various environments.

Conclusion

In summary, the MAX819LESA from Maxim Integrated is a robust microprocessor supervisory circuit that offers precise voltage monitoring, low power consumption, and a compact form factor. Its ability to enhance system reliability by providing a controlled reset makes it an essential component in the design of stable and reliable digital and microprocessor systems.