4517 Dual 64-bit 3-state serial-in serial-out shift register with 4 serial in/outputs. +----------+ 1Q48 |1 +--+ 16| VCC 1Q16 |2 15| 2Q48 1WR |3 14| 2Q16 1CLK |4 13| 2WR 1Q0 |5 4517 12| 2CLK 1Q32 |6 11| 2Q0 1D |7 10| 2Q32 GND |8 9| 2D +----------+ [This information is part of the GIICM]