ON Semiconductor CAT809SSDI-GT3 Voltage Supervisor IC

The CAT809SSDI-GT3 is a high-performance microprocessor supervisory circuit designed by ON Semiconductor, offering a precise voltage monitoring solution for systems that require reliable reset functionality. This component is engineered to maintain system integrity by monitoring the power supply voltage and asserting a reset signal whenever the monitored voltage falls below a predetermined threshold, ensuring that the microprocessor and related circuitry reset to a known state during power-up, power-down, or brown-out conditions.

The CAT809SSDI-GT3 operates over a wide voltage range and is optimized for low-power operations, making it an ideal choice for portable and battery-powered applications. Its key features include a factory-trimmed threshold voltage, low supply current, and a built-in manual reset capability, which allows for a system reset to be initiated by an external event or user input.

With its small footprint and SOT-23 package, the CAT809SSDI-GT3 is suitable for space-constrained applications. It also offers an active-low reset output, which remains asserted for a minimum period after the supply voltage exceeds the reset threshold, providing ample time for the system to stabilize before resuming normal operation.

Highlighted Features:

• Precision monitoring of 3V, 3.3V, and 5V supply voltages
• 140 ms minimum reset pulse width
• Low supply current of 9 μA (typical)
• Factory-trimmed V<sub>TH accuracy of ±2%
• Operating temperature range: -40°C to +85°C
• Debounced manual reset input

Applications for the CAT809SSDI-GT3 are diverse, ranging from microprocessor/microcontroller systems, computers, controllers, intelligent instruments, portable and battery-powered equipment, to automotive systems where precise voltage monitoring is critical for safety and reliability.

ON Semiconductor's commitment to quality and performance is evident in the CAT809SSDI-GT3 voltage supervisor IC. It is designed to meet the stringent requirements of modern electronic systems, ensuring that devices operate effectively even under adverse power conditions. For designers and engineers seeking a reliable voltage monitoring solution, the CAT809SSDI-GT3 is a superb choice that combines functionality, precision, and ease of integration.