name:         HC-55564
function:     Continuously Variable Slope Delta-Modulator(CVSD)
package:      DIP?,14
manufacturer: Harris
added-by:     

           +--()--+
       VDD | 1  14| DIG OUT
ANALOG GND | 2  13| /FZ
      Aout | 3  12| DIG IN
      /AGC | 4  11| /APT
       Ain | 5  10| /ENC
        NC | 6   9| CLK
        NC | 7   8| DIG GND
           +------+

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

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