The W83768 is an I/O-coupler chip that includes six line drivers (1488), ten line receivers (1489), two timers (556), and one 244-type buffer block for game port signals. It also supports a power-down control circuit to reduce power consumption. This chip is intended for use with an I/O controller, and it is specifically designed to match the pin assignments of the Winbond Power I/O series. With this chip, engineers can easily design an all-in-one I/O circuit for personal computer systems without using any other TTL ICs.