Here's all I have: Note it is all text. No pinout supplied, no parametrics.
"The MK5175 is a monolithic integrated ten-number repertory dialer manufactured using Mostek's Silicon gate CMOS process. The circuit accepts keyboard inputs and provides te pulses and mute logic levels required for loop disconnect signaling. For DTMF signaling, the MK5175 may be interfaced with Mostek's Tone Generators.
The circuit will function in either Pullse or Tone mode, dependent on Pin 2. The interpretation of several inputs and outputs is dependent on the mode selected.
[modes omitted]
An on-chip RAM is capable of storing 10 sixteen-digit telephone numbers including the last number dialed. When used in a PABX system, a pause (# key) may be stored. The dialer will pause and stop intil a "continue" (# key) is received.
The MK5175 uses a standardized pinout common to all Mostek tone and pulse dialers. This will facilitate the design of a family of products....