Maxim Integrated MAX708SESA+T Microprocessor Supervisory Circuit

The MAX708SESA+T from Maxim Integrated is a compact, highly reliable 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.

This supervisory circuit ensures that the μP is reset to a known state during power-up, power-down, or brown-out conditions. The MAX708SESA+T comes in a small 8-pin SOIC package, making it ideal for space-constrained applications.

Key features of the MAX708SESA+T include:

• Reset Output: It provides a reset output during power-up, power-down, and brown-out conditions. The reset output remains operational with VCC as low as 1V.
• Voltage Monitoring: The device monitors the supply voltage and keeps the reset outputs active for a minimum of 140ms after VCC has risen above the reset threshold level, ensuring the system has sufficient time to stabilize.
• Low Power Consumption: With a typical supply current of 20μA, this component is suitable for power-sensitive designs.
• Manual Reset Input: A manual reset input is provided, allowing the user to trigger a reset with an external push-button or logic signal.
• Watchdog Timer: A built-in watchdog timer ensures that the μP does not hang in an unresponsive state, enhancing system reliability.

The MAX708SESA+T is an ideal solution for managing microprocessor systems that require constant monitoring and reliable operation. Its integration of key supervisory functions makes it an essential component for applications such as:

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

Maxim Integrated's commitment to quality ensures that the MAX708SESA+T supervisory circuit meets the stringent requirements of high-performance digital systems, providing designers with a robust and cost-effective solution for system monitoring and control.