ON Semiconductor CAT809RTBI-T Voltage Supervisor

The CAT809RTBI-T from ON Semiconductor is a high-performance microprocessor supervisory circuit that ensures reliable system operation through monitoring the power supply voltage. It is specifically designed to maintain system integrity by providing a reset signal to the microprocessor during power-up, power-down, and brown-out conditions. This ensures that the microprocessor restarts in a known state.

This voltage supervisor features a precision monitoring circuit with a factory-programmed threshold voltage of 4.38V, making it suitable for 5V-powered systems. The reset timeout period is also factory-programmed, providing a delay typically of 140ms, which allows the power supply and system to stabilize before the microprocessor starts up. This helps prevent system errors and failures that could occur if the microprocessor were to start with an unstable power supply.

The CAT809RTBI-T comes in a compact, 3-pin SOT-23 package, which is ideal for space-constrained applications. It is characterized for operation over a wide temperature range of -40°C to +85°C, ensuring reliable performance in diverse operating environments.

Key features of the CAT809RTBI-T include:

• Precision voltage monitoring of 4.38V
• 140ms minimum reset timeout period
• Low supply current of 6μA (typical)
• Operating temperature range: -40°C to +85°C
• Compact SOT-23 package
• Active-low RESET output

The device is particularly useful in applications such as microcontroller systems, computers, controllers, and intelligent instruments where reliable system operation is critical. Its low power consumption makes it an excellent choice for battery-operated devices.

By integrating the CAT809RTBI-T into your system, you can enhance the safety and robustness of your application, ensuring that your system operates correctly under variable power conditions. With ON Semiconductor's commitment to quality, this voltage supervisor is a dependable component for managing your system's power integrity.