KK74ACT643 Description
KK74ACT643 Octal 3-State Bus Transceiver High-Speed Silicon-Gate CMOS The KK74ACT643 is identical in pinout to the LS/ALS643, HC/HCT643. The KK74ACT623 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. The KK74ACT643 is a 3-state transceiver that is used for 2-way asynchronous munication between data buses.