ON Semiconductor CAT811JTBI-GT3 Voltage Supervisor IC

The CAT811JTBI-GT3 from ON Semiconductor is a high-performance microprocessor (µP) supervisory circuit designed to keep digital systems stable during power-up, power-down, and brown-out conditions. This voltage supervisor IC ensures that the µP and its peripherals are powered up in the correct sequence and operate within safe voltage levels, enhancing the reliability and longevity of electronic systems.

This device features a precision-trimmed comparator that monitors the V_CC level against a preset threshold voltage. When the monitored V_CC falls below the threshold, the reset output is quickly driven active to signal the µP to reset, thereby preventing code execution errors. The reset signal remains active until V_CC rises above the threshold, ensuring proper system reboot. The CAT811JTBI-GT3 offers a factory-programmed reset threshold voltage, tailored for 3V, 3.3V, and 5V powered systems.

Key features of the CAT811JTBI-GT3 include:

• Low supply current, making it suitable for battery-powered applications.
• 140 ms minimum reset pulse width, providing ample time for the µP to initialize.
• Debounced manual reset input, allowing for a manual system reset without noise interference.
• Watchdog timer functionality, which helps in detecting and recovering from system malfunctions.
• Available in a 5-pin SOT-23 package, which is ideal for space-constrained applications.

The CAT811JTBI-GT3 is an optimal choice for managing power supplies in microcontrollers, computers, controllers, and intelligent instruments. Its robust feature set ensures that it can meet the stringent requirements of automotive, industrial, and consumer electronic applications where reliable system operation is critical.

With its combination of low power consumption, small footprint, and precision voltage monitoring capabilities, the CAT811JTBI-GT3 from ON Semiconductor represents a smart solution for designers looking to enhance the safety and stability of their digital systems.