The MAX707CPA is a highly reliable microprocessor (µP) supervisory circuit designed and manufactured by Maxim Integrated. This device is engineered to maintain system integrity by monitoring the power supply and system voltages, ensuring that microprocessors and other critical system components operate within safe parameters.

Key Features

• Voltage Monitoring: The MAX707CPA provides precise monitoring of power supplies, with a factory-set reset threshold voltage that ensures the µP is reset to a known state during power-up, power-down, and brown-out conditions.
• Manual Reset Capability: An external manual reset input allows for a system reset to be initiated with a push-button or external logic signal, providing additional system control.
• Low Power Consumption: With its low quiescent current draw, this device is an excellent choice for power-sensitive applications, helping to extend battery life in portable devices.
• Watchdog Timer: The built-in watchdog timer function helps in recovering from software lock-up conditions by resetting the µP if it fails to strobe within a preset timeout period.
• Output Driver: The active-low reset output driver can sink or source current, interfacing directly with the reset or interrupt inputs of most popular microprocessors.

Applications

The MAX707CPA is versatile and can be used in a variety of applications, including:

• Computers and Servers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Industrial Controllers
• Automotive Systems

Specifications

Operating within a temperature range of 0°C to +70°C, the MAX707CPA comes in an 8-pin DIP package, making it suitable for through-hole mounting. The device operates from a supply voltage of +4.75V to +5.5V, making it ideal for 5V systems. Its reset threshold voltage is precisely trimmed to ensure reliable operation without the need for external components.

For design flexibility, the MAX707CPA also offers several options for reset timeout periods, allowing designers to tailor the supervisory circuit to their specific application requirements.