View sn74lvth245apw-e05 datasheet:

SN74LVTH245APW-E05 IL08 BiC-MOS BUS TRANSCEIVERS WITH 3-STATE OUTPUTS —TOP VIEW— 1 DIR IN 1 VDD 20 DIR 2 18 A1 B1 3 17 A2 B2 A1 I/O 2 19 IN OE 4 16 A3 B3 5 15 A4 B4 A2 I/O 3 18 B1 I/O 6 14 A5 B5 7 13 A6 B6 A3 I/O 4 17 B2 I/O 8 12 A7 B7 9 11 A8 B8 A4 I/O 5 16 B3 I/O OE 19 A5 I/O 6 15 B4 I/O A6 I/O 7 14 B5 I/O INPUTS OPERATION DIR OE A7 I/O 8 13 B6 I/O 0 0 B DATA TO A BUS 0 1 A DATA TO B BUS A8 I/O 9 12 B7 I/O 1 x ISOLATION 0 : LOW LEVEL 10 GND 11 B8 I/O 1 : HIGH LEVEL x : DON’T CARE INPUT 1 DIR DIR : DIRECTION CONTROL 19 OE : OUTPUT ENABLE OE 2 A1 INPUT/OUTPUT A1 - A8 : DATA 18 B1 B1 - B8 : DATA TO 7 OTHER CHANNELS