HEF40245B Octal bus transceiver with 3-state outputs P-Mos Transistor 20polig = SOT163-1  The HEF40245BT is an octal bus transmitter / receiver designed for 8-line asynchronous, 2-way data communication between data buses. It features output stages with high current output capability suitable for driving highly capacitive loads. The HEF40245B is pin and functionally compatible with the TTL ‘245’ device