7416646 Dual 8-bit 3-state noninverting registered transceiver. +----------+ 1DIR |1 +--+ 56| /1EN 1CAB |2 55| 1CBA 1SAB |3 54| 1SBA GND |4 53| GND 1A1 |5 52| 1B1 1A2 |6 51| 1B2 VCC |7 50| VCC 1A3 |8 49| 1B3 1A4 |9 48| 1B4 1A5 |10 47| 1B5 GND |11 46| GND 1A6 |12 45| 1B6 1A7 |13 44| 1B7 1A8 |14 7416 43| 1B8 2A1 |15 646 42| 2B1 2A2 |16 41| 2B2 2A3 |17 40| 2B3 GND |18 39| GND 2A4 |19 38| 2B4 2A5 |20 37| 2B5 2A6 |21 36| 2B6 VCC |22 35| VCC 2A7 |23 34| 2B7 2A8 |24 33| 2B8 GND |25 32| GND 2SAB |26 31| 2SBA 2CAB |27 30| 2CBA 2DIR |28 29| /2EN +----------+ [This information is part of the GIICM]