Application-specific port protection ICs are specialized integrated circuits designed to safeguard electronic ports in various industries. These ICs are not tied to a single brand but are produced by multiple companies globally, including Texas Instruments (USA), NXP Semiconductors (Netherlands), and STMicroelectronics (Switzerland). They serve industries such as automotive, industrial automation, and consumer electronics, providing protection against overvoltage, electrostatic discharge (ESD), and short circuits. Key products include USB port protectors, HDMI safeguards, and Ethernet port protection ICs, ensuring reliable operation in harsh environments.