The Maxim Integrated DS1818R-5 is a compact, highly efficient microprocessor supervisory circuit designed for monitoring the power supplies in microprocessor and digital systems. It provides a precise way to monitor power supply functionality and to ensure that the system microprocessor is reset to a known state in the event of a power failure or system error.

Key Features

• Reset Threshold Voltage: The DS1818R-5 has a preset reset threshold voltage of 4.63V, which is ideal for 5V power supplies.
• Reset Timeout: It offers a 150ms min power-on reset pulse width, ensuring sufficient time for the system to stabilize before the processor starts.
• Low Power Consumption: This device is optimized for low power consumption, making it suitable for battery-operated applications.
• Compact Size: The DS1818R-5 comes in a small SOT-23 package, which is perfect for space-constrained applications.
• Temperature Range: It operates over a wide temperature range of -40°C to +85°C, allowing for deployment in various environments.
• Push-Pull Active-Low Reset Output: The device features an active-low reset output with push-pull driver, which eliminates the need for an external pull-up resistor.

Applications

The DS1818R-5 is versatile and can be used in a multitude of applications, including:

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

Product Summary

The Maxim Integrated DS1818R-5 MicroMonitor is an essential component for system reliability and recovery. It ensures that microprocessors start in a known state during power-up, power-down, or brownout conditions. Its low power consumption and small footprint make it an excellent choice for designers looking to enhance system integrity while managing power and space constraints. With its robust feature set and wide operating temperature range, the DS1818R-5 is the go-to solution for a broad range of applications requiring reliable power monitoring and processor management.