Maxim Integrated MAX811ESU-T Microprocessor (µP) Supervisory Circuit

The MAX811ESU-T from Maxim Integrated is a compact, low-power microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a precise voltage monitoring function, ensuring that your system operates reliably within its voltage parameters. This supervisory circuit is an ideal solution for controlling system reset and power-on reset in computers, controllers, and intelligent instruments.

With a highly accurate voltage monitoring threshold of ±1.5%, the MAX811ESU-T ensures that the system's microprocessor is reset to a known state during power-up, power-down, or brownout conditions. The reset output is guaranteed to remain in the active state for a minimum of 140ms after V<sub>CC has risen above the reset threshold level, providing ample time for the µP to stabilize.

The device comes in a small SOT-143 package, making it suitable for space-constrained applications. It operates over a wide supply voltage range, typically from 1.2V to 5.5V, which covers most logic levels and power supply standards. This allows for flexible integration into various system designs without the need for additional voltage level adjustments.

One of the key features of the MAX811ESU-T is its low supply current of 17µA (typical), which makes it an energy-efficient choice for battery-powered and portable devices. It also includes a manual reset input, which provides a direct way to initiate a system reset from an external source, such as a push-button or a software command.

The MAX811ESU-T is designed to improve system reliability and accuracy with its fast response to power supply transients and its ability to maintain system integrity through uncertain power conditions. Whether you're designing a consumer product, an industrial control system, or a high-tech IoT device, the MAX811ESU-T offers a robust and reliable solution for your system's supervisory needs.

Overall, the Maxim Integrated MAX811ESU-T supervisory circuit is a versatile and dependable component that can safeguard your microprocessor-based systems from the dangers of unpredictable power supplies, ensuring that your applications run smoothly and without interruption.