558
Quad monostable timers.

       +----------+
    1Q |1  +--+ 16| 4Q
1RCext |2       15| 4RCext
   1TR |3       14| 4TR
    CV |4       13| /RST
   VCC |5  558  12| GND
   2TR |6       11| 3TR
2RCext |7       10| 3RCext
    2Q |8        9| 3Q
       +----------+

[This information is part of the GIICM]