40107 Dual 2-input open-collector NAND gates with buffered output. +----------+ +-----------+ __ 1A |1 +--+ 8| VCC | A | B |/Y | /Y = AB 1B |2 7| 2B |---+---+---| /1Y |3 40107 6| 2A | 0 | 0 | Z | GND |4 5| /2Y | 0 | 1 | Z | +----------+ | 1 | 0 | Z | | 1 | 1 | 0 | +-----------+ [This information is part of the GIICM]