Optocoupler ICs, also known as opto-isolators, provide electrical isolation between different parts of a circuit, allowing signals to pass between components without direct electrical connection. These ICs use light to transfer signals, ensuring that high-voltage systems can communicate with low-voltage circuits safely. Optocouplers are essential for protecting sensitive electronic components from voltage spikes and surges.

In industrial control systems, medical devices, and power supplies, optocoupler ICs provide crucial isolation that ensures the reliability and safety of electronic circuits. These ICs are a must-have for any project that requires electrical isolation and signal integrity across different voltage levels.