The MAX807LCPE from Maxim Integrated is a sophisticated 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 with +5V-powered circuits.

Key Features

• Voltage Monitoring: This device ensures that the µP is only operational when the power supply voltage is within acceptable limits, thus safeguarding the system from low voltage conditions that could lead to data corruption and erratic system behavior.
• Reset Output: The MAX807LCPE generates a reset signal for the µP during power-up, power-down, and brownout conditions. The reset signal remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level, ensuring a proper system reset.
• Battery Backup Switching: In the event of a power failure, the device automatically switches to a backup battery to maintain power to the µP memory.
• Watchdog Timer: A built-in watchdog timer serves as an independent system monitor, which must be periodically toggled before a preset timeout period expires to prevent it from resetting the µP.
• Manual Reset: An additional feature includes a manual reset input that allows for a reset to be triggered with an external switch or logic signal.
• Compact Package: The MAX807LCPE comes in a compact 16-pin DIP or SO package, suitable for space-constrained applications.

Applications

The MAX807LCPE is ideal for use in a variety of applications, including:

• Computers
• Controllers
• Intelligent Instruments
• Portable/Battery-Powered Equipment

Technical Specifications

With an operating temperature range of 0°C to +70°C and a voltage threshold accuracy of ±2%, the MAX807LCPE is designed for stringent, high-reliability environments. The device also features a low supply current of 40µA (typical), making it an energy-efficient choice for modern electronic systems.

For comprehensive technical details, refer to the MAX807LCPE datasheet provided by Maxim Integrated.