+---+--+---+ +---+---*---+ /1OE |1 +--+ 14| VCC | A |/OE| Y | 1A |2 13| /4OE +===+===*===+ 1Y |3 74 12| 4A | 0 | 0 | 0 | /2OE |4 125 11| 4Y | 1 | 0 | 1 | 2A |5 10| /3OE | X | 1 | Z | 2Y |6 9| 3A +---+---*---+ GND |7 8| 3Y +----------+
+---+--+---+ +---+---*---+ /1OE |1 +--+ 14| VCC | A |/OE| Y | 1A |2 13| /4OE +===+===*===+ 1Y |3 74 12| 4A | 0 | 0 | 0 | /2OE |4 125 11| 4Y | 1 | 0 | 1 | 2A |5 10| /3OE | X | 1 | Z | 2Y |6 9| 3A +---+---*---+ GND |7 8| 3Y +----------+