The MAX813LESA from Maxim Integrated is a highly efficient microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in conjunction with +5V-powered circuits.

Key Features

• Precision Monitoring: The device features a precision voltage monitor that keeps a check on the +5V power-supply voltage. This feature is crucial for ensuring the proper operation of the µP and associated circuitry.
• Power-On Reset: It generates a reset signal on power-up, power-down, and brownout conditions. The reset output remains operational with VCC as low as 1V.
• Manual Reset Input: A manual reset input is provided, allowing the user to initiate a system reset with an external pushbutton or logic signal.
• Low Power Consumption: The MAX813LESA is optimized for low power consumption, which is essential for battery-operated and portable devices.
• Watchdog Timer: An on-board watchdog timer ensures that the µP system functions correctly by resetting the system if the µP does not provide a periodic signal within a preset timeout period.

Applications

This supervisory circuit is ideal for a wide range of applications where reliable system operation is a priority. These include:

• Computers and controllers
• Intelligent instruments
• Portable/battery-powered equipment
• Embedded systems

Package and Availability

The MAX813LESA comes in an 8-pin SO package and is available for order. Its operating temperature range is from -40°C to +85°C, making it suitable for industrial applications.

Conclusion

In summary, the MAX813LESA from Maxim Integrated is a robust solution for system monitoring and reset functions. Its integration of multiple features into a single package makes it a compact, reliable, and cost-effective choice for safeguarding µP systems against a variety of power-related issues.