+---+--+---+ U//D |1 +--+ 16| VCC CLK |2 15| /RCO P0 |3 14| Q0 P1 |4 74 13| Q1 P2 |5 169 12| Q2 P3 |6 11| Q3 /ENP |7 10| /ENT GND |8 9| /LOAD +----------+
+---+--+---+ U//D |1 +--+ 16| VCC CLK |2 15| /RCO P0 |3 14| Q0 P1 |4 74 13| Q1 P2 |5 169 12| Q2 P3 |6 11| Q3 /ENP |7 10| /ENT GND |8 9| /LOAD +----------+