Maxim Integrated Product Overview: MAX811TEUS

The MAX811TEUS 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 significant level of system reliability and precision with minimal external components, making it an ideal solution for portable and space-constrained applications.

This device is particularly efficient in managing system power supply and reset functions. It ensures that the µP is only operational when the system voltage is within an acceptable range. If the monitored supply voltage falls below a predefined threshold, the MAX811TEUS actively holds the µP in a reset state until stable operating conditions are restored. This feature helps to prevent system errors, data corruption, and hardware damage that can occur if the µP attempts to operate under suboptimal power conditions.

The MAX811TEUS comes with a factory-trimmed reset threshold voltage, and it offers a ±1.5% reset threshold accuracy over the entire temperature range of -40°C to +85°C. This precision is crucial for systems that demand consistent performance and stability under varying environmental conditions.

Key features of the MAX811TEUS include:

• Low power consumption, which is ideal for battery-operated devices.
• Reset timeout delay that provides the system with enough time to stabilize before the µP starts operating after a reset.
• Manual reset capability, allowing for a system reset to be triggered manually if necessary.
• An active-low reset output, which remains asserted for the duration of the timeout period after the supply voltage drops below the reset threshold or until manual reset is triggered.
• A compact SOT-143 package, which saves board space and is suitable for high-density circuit designs.

The MAX811TEUS is an essential component for designers who require a reliable and precise voltage monitoring solution for their µP-based systems. Its ease of integration, coupled with Maxim Integrated's reputation for quality, makes it a popular choice for applications ranging from consumer electronics to industrial control systems.

By integrating this supervisory circuit into your design, you can enhance system reliability, prevent data loss, and ensure that your applications run smoothly even in the face of power supply fluctuations.