Maxim Integrated's MAX810REUR+T Microprocessor Reset Circuit

The MAX810REUR+T from Maxim Integrated is a highly efficient microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a significant layer of protection by ensuring that the µP and its peripherals are reset properly during power-up, power-down, and brown-out conditions. This compact and robust component is an essential part of maintaining the reliability and stability of electronic systems.

The MAX810REUR+T comes in a tiny 3-pin SOT-23 package, making it an ideal choice for space-constrained applications. Despite its small size, it packs a powerful punch with a variety of features. One of the key features is its ability to assert a reset signal whenever the V<sub>CC supply voltage declines below a preset threshold, ensuring that the µP resets cleanly during power failures.

With a factory-trimmed reset threshold voltage, the MAX810REUR+T is tailored for a precise operation. The reset output remains asserted for a minimum of 140ms after V<sub>CC has risen above the reset threshold level, providing ample time for the system to stabilize. This timeout period ensures that the µP and its peripherals are held in reset long enough to recover from the power fault.

The device operates over a wide supply voltage range, from 1.2V to 5.5V, and features low supply current, making it suitable for battery-operated applications. Its power supply transient immunity prevents false resets from being asserted, adding to the reliability of the system it protects.

Designed for use in computers, controllers, intelligent instruments, and critical µP power monitoring, the MAX810REUR+T is a versatile component that can be integrated into various digital systems. Its active-low RESET output guarantees compatibility with a multitude of µP and DSP applications. The device's robustness is further underscored by its ability to operate over the extended temperature range of -40°C to +125°C, ensuring performance in even the most demanding environments.

In summary, the MAX810REUR+T is a testament to Maxim Integrated's commitment to providing sophisticated, high-quality components for digital system stability and reliability.