Maxim Integrated MAX812JEUS+T Microprocessor Reset Circuit

The MAX812JEUS+T is a compact, highly efficient microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. Manufactured by Maxim Integrated, this device ensures that the microprocessor is reset to a known state during power-up, power-down, or brown-out conditions. The MAX812JEUS+T is an essential component for any system that requires reliable operation over a wide range of voltage levels and environmental conditions.

This supervisory circuit provides a number of key features that make it an optimal choice for system designers. It offers a precision voltage monitor with a factory-set reset threshold voltage. When V_CC drops below this preset threshold, the reset output is asserted, which remains active for a minimum of 140ms after V_CC rises above the reset threshold. This ensures that the µP has ample time to stabilize and start up correctly.

The MAX812JEUS+T comes in a compact, 4-pin SOT-143 package, making it suitable for use in space-constrained applications. Its low supply current of only 17µA (typical) makes it an energy-efficient choice for battery-powered devices. The device operates over a wide voltage range, from 2.5V to 5.5V, allowing it to be used with most standard logic levels and power supplies.

With its built-in hysteresis to prevent erratic resets, the MAX812JEUS+T offers a robust solution for systems that may experience fluctuating power supply conditions. It is designed to support a wide range of applications, including computers, controllers, intelligent instruments, portable/battery-powered equipment, and embedded systems.

Maxim Integrated's commitment to quality ensures that the MAX812JEUS+T meets the highest standards of reliability and performance. This reset circuit is an ideal choice for designers seeking a simple, effective way to enhance the operational stability of their digital systems.

Overall, the MAX812JEUS+T is a versatile, reliable, and easy-to-implement solution for microprocessor reset applications, ensuring that digital systems maintain their integrity and performance across various conditions and power supply variations.