The CD74AC245 and CD74ACT245 are octal-bus transceivers that utilize the Harris Advanced CMOS Logic technology. They are non-inverting three-state bidirectional transceiverbuffers intended for two-way transmission from "A" bus to "B" bus or "B" bus to "A". The logic level present on the direction input (DIR) determines the data direction. When the output enable input (OE) is HIGH, the outputs are in the highimpedance state.