Description

The DS1814CR-10 is a 5-Volt MicroMonitor and the DS1819 3.3V MicroMonitor that monitors three vital conditions for a microprocessor: power supply, software execution, and external override. It features a precision temperature-compensated reference and comparator circuit to monitor the status of VCC. When an out-of-tolerance condition occurs, an internal power-fail signal is generated, which forces the reset(s) to an active state. After VCC returns to an in-tolerance condition, the reset signal is kept in the active state for a minimum of 140ms to allow the power supply and processor to stabilize.

Specifications and features

• Halts and restarts an out-of-control microprocessor
• Holds the microprocessor in check during power transients
• Automatically restarts the microprocessor after a power failure
• Monitors pushbutton for external override
• Accurate 5%, 10%, or 20% (3V only) microprocessor power monitoring
• Eliminates the need for discrete components
• 20% tolerance for use with 3.0V systems
• Pin- and function-compatible with the MAX823/24/25 products
• Low cost SOT-23-5 package
• Industrial temperature range: -40C to +85C

Application Scenarios

The DS1814CR-10 is widely used in electronic devices where monitoring and controlling the microprocessor's power supply is critical. It can be utilized in various applications such as embedded systems, industrial automation, communication devices, and consumer electronics.

Comparison

• Precision temperature-compensated reference and comparator circuit
• Accurate and reliable microprocessor power monitoring
• Automatic restart after power failure
• Compatible with MAX823/24/25 products
• Low-cost package
• Wide industrial temperature range

• Only compatible with 5-Volt and 3.3V microprocessors
• Not suitable for systems with power supply voltages other than 5V or 3.3V
• Limited functionality compared to more advanced microprocessor supervisors