Driver 7406

       +----__----+
   I1 -| 1     18 |- Vcc
   Q1 -| 2     17 |- I6
   I2 -| 3     16 |- Q6
   Q2 -| 4     15 |- I5
   I3 -| 5     14 |- Q5
   Q3 -| 6     13 |- I4
  GND -| 7     12 |- Q4
       +----------+

  Ix - input
  Qx - output (inverted input)

Author: Marc-Jano Knopp <mjk@c64.org> on 97/1/4
Source: http://mjk.c64.org