Maxim Integrated MAX6863UK26+ Microprocessor Reset Circuit

The Maxim Integrated MAX6863UK26+ is a highly compact, low-power microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in portable electronics, computers, controllers, and other microprocessor-based equipment.

This device is specifically engineered to maintain system integrity by monitoring the power supply voltage. In the event of a power failure or brownout condition, the MAX6863UK26+ asserts a reset signal to the microprocessor to prevent code execution errors. The reset signal remains asserted for a minimum timeout period after V_CC has risen above the reset threshold level, ensuring the system has sufficient time to stabilize.

Key features of the MAX6863UK26+ include:

• Precision Voltage Monitoring: Factory-trimmed reset threshold at 2.63V suitable for 2.5V to 3.3V powered circuits.
• Low Power Consumption: With a low supply current of 4µA (typical), it is ideal for battery-operated applications.
• Manual Reset Input: A manual reset input is provided, allowing the user to trigger a reset pulse with an external signal.
• Reset Timeout: The reset output remains asserted for a timeout period of 140ms (min), allowing the system to recover after power stabilization.
• High Operating Temperature Range: The device can operate over a wide temperature range from -40°C to +85°C, accommodating a variety of environments and applications.
• Compact SOT23 Package: The component comes in a small 5-pin SOT23 package, which is ideal for space-constrained applications.

The MAX6863UK26+ is designed for ease of integration into a variety of systems, requiring minimal external components for operation. Its robust feature set ensures that it is a reliable choice for mission-critical applications where consistent and accurate monitoring of the power supply voltage is necessary to prevent data corruption and ensure the proper operation of microprocessor systems.

With Maxim Integrated's reputation for quality and performance, the MAX6863UK26+ is an excellent choice for designers looking to enhance the reliability and performance of their digital systems.