74245 8-bit 3-state noninverting bus transceiver. Enable and direction pins control output enables. +----------+ +---------------+ DIR |1 +--+ 20| VCC |/EN|DIR| A | B | A1 |2 19| /EN |---+---+---+---| A2 |3 18| B1 | 1 | X | Z | Z | A3 |4 17| B2 | 0 | 0 | B | Z | A4 |5 74 16| B3 | 0 | 1 | Z | A | A5 |6 245 15| B4 +---------------+ A6 |7 14| B5 A7 |8 13| B6 A8 |9 12| B7 GND |10 11| B8 +----------+ [This information is part of the GIICM]