The CAT809LTBI-GT3 is a high-performance microprocessor supervisory circuit designed and manufactured by ON Semiconductor, a leader in energy-efficient innovations. This device is engineered to monitor the power supply voltage in digital systems, providing a secure and reliable reset signal to the microprocessor during power-up, power-down, or brown-out conditions. The CAT809LTBI-GT3 is an essential component for systems that require a high level of stability and accuracy in their operations.

Featuring a precision voltage monitor, the CAT809LTBI-GT3 ensures that the system's microprocessor and other critical components are protected from unpredictable power supply fluctuations. The device holds the processor in a reset state until the system voltage reaches the device's precise reset threshold level. Once the voltage exceeds this level, the CAT809LTBI-GT3 generates a reset signal which is maintained for a minimum of 140ms after the supply voltage stabilizes, ensuring the system has adequate time to initialize properly.

The CAT809LTBI-GT3 is available in a 3-pin SOT-23 package, which is ideal for space-constrained applications. Its low power consumption makes it suitable for battery-powered devices, while its wide operating temperature range of -40°C to +85°C ensures reliable operation in diverse environmental conditions.

Key features of the CAT809LTBI-GT3 include:

• Precision monitoring of 3V, 3.3V, and 5V supply voltages
• 140ms (min) reset pulse width
• Low supply current of 9μA (typical)
• Operating temperature range: -40°C to +85°C
• Compact SOT-23 packaging

The CAT809LTBI-GT3 is suitable for a wide range of applications, including microprocessor-based systems, computers, controllers, intelligent instruments, portable electronics, and automotive systems, where maintaining the correct operation during power fluctuations is critical. By integrating this supervisory circuit from ON Semiconductor, designers can enhance system reliability and protect against data corruption, ensuring that their products maintain high performance and stability under all power conditions.