Maxim Integrated MAX6328UR31+T Microprocessor Supervisory Circuit

The MAX6328UR31+T is a high-quality microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in µP and digital systems. It provides a significant level of protection by ensuring that the µP is reset to a known state during power-up, power-down, and brown-out conditions. The component is an essential piece in the puzzle for system reliability and robustness, especially in applications where precise power monitoring is critical.

This supervisory circuit offers a factory-trimmed reset threshold voltage of 3.08V, which is ideal for 3.3V-powered systems. The reset output is valid down to V<sub>CC = 1.2V, which allows for low-voltage operation, ensuring that the system can manage power-down events gracefully. The MAX6328UR31+T comes in a compact SOT-23 package, making it suitable for space-constrained applications.

One of the key features of the MAX6328UR31+T is its low supply current of 5µA (typical), which is advantageous for battery-powered applications where power conservation is paramount. The device's reset active period, or reset timeout, is 140ms (min), giving the connected µP ample time to initialize properly during power-up.

Furthermore, the MAX6328UR31+T provides a manual reset input that allows for a system reset to be initiated by either a pushbutton or an external logic signal. This manual reset feature adds an additional layer of control for system operators or for debugging purposes.

The device's temperature range of -40°C to +85°C ensures that it can operate reliably in a wide range of environmental conditions, making it suitable for industrial and automotive applications, as well as consumer electronics that may be exposed to variable climates.

Overall, the Maxim Integrated MAX6328UR31+T is a reliable and efficient choice for system designers looking to enhance the safety and stability of their digital systems. Its precision voltage monitoring, low power consumption, and compact form factor make it an excellent choice for a variety of applications that require robust µP supervision.