Maxim Integrated's MAX6314US31D1+ Microprocessor Reset Circuit

The MAX6314US31D1+ is a compact, high-precision microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in µP and digital systems. It provides a significant level of system reliability and accuracy required in critical applications by ensuring that the µP resets to a known state during power-up, power-down, or brown-out conditions.

This device is particularly efficient in managing system resets by offering a factory-trimmed reset threshold voltage of 3.1V, ensuring that systems powered by 3.3V supplies can maintain proper operation. The MAX6314US31D1+ is equipped with a manual reset input, which allows for a system reset to be initiated with an external pushbutton or logic signal.

One of the key features of this reset circuit is its low power consumption, making it an ideal choice for portable and battery-operated equipment. With a supply current of just 1.2µA, the MAX6314US31D1+ contributes to the overall energy efficiency of the system it is incorporated into.

The device is also designed with a robust debounce circuitry that filters out any input transients on the manual reset input, preventing false resets and ensuring system stability. Additionally, the MAX6314US31D1+ offers an active-low reset output, which remains asserted for a minimum of 140ms after V_CC has risen above the reset threshold level, giving the system ample time to stabilize before the µP starts its operation.

Encased in a small SOT-143 package, the MAX6314US31D1+ is optimized for space-constrained applications. It operates over a wide temperature range of -40°C to +85°C, which makes it suitable for use in various environments, from industrial to commercial settings.

In summary, the MAX6314US31D1+ from Maxim Integrated is a reliable and energy-efficient solution for system reset management. Its precision voltage monitoring, manual reset capability, and low power consumption make it an essential component for enhancing system integrity in a wide array of electronic applications.