74580 8-bit 3-state inverting transparent latch. +----------+ +---------------+ /OE |1 +--+ 20| VCC |/OE| LE| D |/Q | D1 |2 19| /Q1 |---+---+---+---| D2 |3 18| /Q2 | 1 | X | X | Z | D3 |4 17| /Q3 | 0 | 0 | X | - | D4 |5 74 16| /Q4 | 0 | 1 | 0 | 1 | D5 |6 580 15| /Q5 | 0 | 1 | 1 | 0 | D6 |7 14| /Q6 +---------------+ D7 |8 13| /Q7 D8 |9 12| /Q8 GND |10 11| LE +----------+ [This information is part of the GIICM]