name:         TT-5088
function:     generator dtmf
package:      DIL,14
manufacturer: ??
added-by:     Sig. Perosa Sergio

              +--()--+
     keyboard | 1  14| keyboard
     keyboard | 2  13| keyboard
     keyboard | 3  12| keyboard
              | 4  11| 
piezo (480kc) | 5  10| nc
        piezo | 6   9| out
          gnd | 7   8| vcc
              +------+

This information was added by a third party and may be incorrect.

This pinout came from the Chipdir:
http://www.chipdir.org/