Maxim Integrated MAX823SEXK+T Microprocessor Supervisory Circuit

The Maxim Integrated MAX823SEXK+T is a highly reliable and efficient microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides essential functions such as power-on reset control, monitoring of supply voltage, and watchdog timing. This compact and robust device is an ideal solution for managing system integrity in a wide range of applications, including computers, controllers, intelligent instruments, and portable battery-powered electronics.

Key Features

• Power Supply Monitoring: The MAX823SEXK+T constantly checks the system's power supply voltage. It generates a reset signal whenever the VCC supply voltage falls below a preset threshold, ensuring that the µP and other critical system components reset to a known state during power-up, power-down, or brown-out conditions.
• Adjustable Reset Timeout: It offers an externally adjustable reset timeout period, which can be tailored to specific system requirements, providing flexibility in system design.
• Watchdog Timer: The integrated watchdog timer helps in preventing system failures by resetting the µP if it does not receive a periodic signal indicating normal operation. This feature is crucial in applications where continuous system reliability is paramount.
• Low Power Consumption: With its low power consumption, the MAX823SEXK+T is particularly suited for portable and battery-operated devices, ensuring minimal impact on the overall power budget of the system.
• Compact SOT Package: Enclosed in a small SOT-23 package, the device saves valuable board space, which is essential for space-constrained applications.
• Temperature Range: The device operates over an extended temperature range, making it suitable for industrial and automotive environments where temperatures can vary widely.

Applications

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

The Maxim Integrated MAX823SEXK+T is a versatile and essential component for systems that require reliable operation and robust power management. Its combination of features ensures that digital systems operate smoothly and consistently, even in the face of power supply irregularities or system errors.