7411643 8-bit 3-state inverting/noninverting bus transceiver. Enable and direction pins control output enables. A to B transfer is inverted, B to A transfer is not inverted. +----------+ A1 |1 +--+ 24| DIR A2 |2 23| B1 A3 |3 22| B2 A4 |4 21| B3 GND |5 20| B4 GND |6 7411 19| VCC GND |7 643 18| VCC GND |8 17| B5 A5 |9 16| B6 A6 |10 15| B7 A7 |11 14| B8 A8 |12 13| /OE +----------+ [This information is part of the GIICM]