The MAX690RESA+ from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to maintain system integrity during power failures or unexpected events. This sophisticated device is essential for managing microprocessor systems by monitoring the power supply to ensure that it remains within acceptable limits.

Key Features

• Power Supply Monitoring: The MAX690RESA+ keeps a constant check on the power supply voltage and ensures that the microprocessor is reset to a known state during power-up, power-down, and brownout conditions.
• Low Power Consumption: With its low power consumption, this device is ideal for power-sensitive applications, ensuring minimal drain on the system's power resources.
• Backup Battery Switchover: In the event of a power failure, the circuit automatically switches to a backup battery, ensuring uninterrupted operation and data retention.
• Watchdog Timer: It features a watchdog timer that must be periodically cleared by the microprocessor. If the microprocessor fails to clear the timer, the MAX690RESA+ will issue a reset signal to restart the system.
• Manual Reset Input: This feature allows for an external trigger to reset the system, providing an additional layer of control.

Applications

The MAX690RESA+ is versatile and can be used in a wide range of applications, including:

• Computers and Controllers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Critical µP Power Monitoring

Technical Specifications

The device comes in an 8-pin NSOIC package and operates over a wide temperature range. It requires a minimal number of external components, making it easy to integrate into existing designs. The MAX690RESA+ is designed to meet the stringent requirements of complex microprocessor systems, providing a reliable solution for system monitoring and control.

For more detailed technical specifications, reference datasheets, and application notes, or to request samples, visit Maxim Integrated's official website or contact their sales and support team.