Maxim Integrated's MAX809TEUR-T Microprocessor Reset Circuit

The MAX809TEUR-T is a compact, highly efficient microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides a significant function in ensuring the reliable operation of µP systems by resetting the processor whenever the supply voltage drops below a predefined threshold. This feature is crucial for preventing code execution errors during power-up, power-down, or brown-out conditions.

This supervisory circuit comes in a small 3-pin SOT-23 package, making it ideal for space-constrained applications. The MAX809TEUR-T is a versatile component that can be used with a variety of microprocessors, microcontrollers, and other digital systems that require a reset signal to maintain proper operation.

Key Features

• Precision Voltage Monitoring: It includes a precision band-gap reference to accurately monitor the power supply voltage, ensuring that the reset threshold is met with exactitude.
• Low Power Consumption: The device is designed for low power consumption, which makes it suitable for use in portable and battery-operated equipment.
• Manual Reset Input: An additional feature is the manual reset input that allows for a reset to be triggered with an external push-button or logic signal, providing an extra layer of system control.
• Reset Signal: The MAX809TEUR-T generates a reset signal for a minimum of 140ms after it detects that the voltage has fallen below the factory-set reset threshold. This ensures the system has sufficient time to return to a stable state before resuming operation.
• Temperature Range: It operates over a wide temperature range, accommodating various operating environments.

With its high integration and robust feature set, the MAX809TEUR-T is an essential component for system reliability in microprocessor-based applications. Its ability to provide a reliable reset signal under adverse conditions makes it a popular choice among designers who require a dependable solution for system stability and recovery.

Applications

The MAX809TEUR-T is suitable for a wide range of applications, including:

• Computers and Servers
• Embedded Systems
• Portable/Battery-Powered Devices
• Industrial Controllers
• Intelligent Instruments

Maxim Integrated's commitment to quality ensures that the MAX809TEUR-T microprocessor reset circuit is a reliable and efficient solution for maintaining system integrity across various applications.