Maxim Integrated MAX8219ENG Microprocessor Voltage Monitors

The Maxim Integrated MAX8219ENG is a precision, low-power microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V-powered circuits. This device primarily ensures that the microprocessor will only operate in a stable power environment, significantly enhancing system reliability.

The MAX8219ENG monitors up to five supply voltages, including +5V, -5V, +12V, -12V, and an adjustable voltage, ensuring comprehensive coverage for various system power rails. The device is highly versatile, with the ability to monitor negative voltages without requiring a negative supply, thanks to its unique design. The adjustable input allows the monitoring of a voltage under 1.25V to the supply voltage, providing flexibility to accommodate different system requirements.

One of the key features of the MAX8219ENG is its low supply current, which is typically 50µA, making it an energy-efficient solution for power-sensitive applications. Additionally, the device boasts a ±1% threshold accuracy over temperature, ensuring precise monitoring and control of the power supply levels. It also includes a debounced manual reset input, which is a valuable feature for systems that require user-initiated resets.

The MAX8219ENG comes in an industry-standard 16-pin DIP package, suitable for through-hole mounting, which is convenient for prototyping and production. This package is known for its robustness and ease of handling, making it a popular choice for many electronic applications. The device operates over the extended temperature range of -40°C to +85°C, ensuring reliable performance in a wide range of environmental conditions.

In summary, the Maxim Integrated MAX8219ENG offers a comprehensive solution for microprocessor power supply monitoring, combining precision, flexibility, and low power consumption. Its ability to monitor multiple voltages and its high accuracy make it an ideal choice for ensuring the stability and reliability of digital systems.