Maxim Integrated MAX6315US31D2+T Low-Power Microprocessor Reset Circuits

The MAX6315US31D2+T is a highly reliable and precise microprocessor (µP) supervisory circuit designed to maintain system integrity by monitoring the power supply voltage in digital systems. Manufactured by Maxim Integrated, this device is a part of a series of low-power circuits tailored to control the reset function within microprocessors, microcontrollers, and other digital systems, ensuring a proper startup and operation during power-up, power-down, or brown-out conditions.

This particular model features an active-low, push-pull reset output, which provides a robust reset signal directly to the µP. The reset signal is guaranteed to remain asserted for a minimum of 140ms after V_CC has risen above the reset threshold level, ensuring that the system has sufficient time to stabilize before the processor starts its operation.

The MAX6315US31D2+T operates with a nominal threshold voltage of 3.1V, which makes it suitable for 3.3V powered systems. The device is highly accurate with a threshold tolerance of ±1.5%, providing a reliable reset operation over the full temperature range of -40°C to +85°C. This accuracy is essential in critical applications where precise monitoring is necessary to prevent data corruption and ensure system reliability.

One of the key features of the MAX6315US31D2+T is its low power consumption. With a typical supply current of only 1µA, it is an ideal choice for portable and battery-operated applications where power efficiency is a priority. Furthermore, the device is offered in a compact SOT-143 package, making it a space-saving solution for modern, high-density circuit boards.

With its built-in glitch immunity, the MAX6315US31D2+T is insensitive to fast transients on V_CC, ensuring that the reset output will only be triggered by genuine undervoltage conditions. The device is also available in a variety of standard reset threshold voltages, allowing designers to choose the optimal version for their specific application requirements.

In summary, the Maxim Integrated MAX6315US31D2+T is a high-quality, reliable reset circuit that provides crucial monitoring of power supply levels, ensuring safe and predictable behavior of digital systems during power fluctuations or interruptions.