[GreenKeys] Fwd: Unknown TTY ICs

[Paul Kasley]

Teletype did indeed make their own ICs and they did indeed mark them “TTY”. My first assignment as a co-op in 1973 at the T7 R&D facility was to profile PN junction depths on diffused wafers. The R&D fab was on the first floor of T7. Just off the T5 cafeteria was the epitaxial deposition lab. The PMOS manufacturing facility was on the north side of T3. 

TTY custom ICs went into the model 43, the model 40, and certainly other products that came after my time there.

The initial process was P-channel and they did eventually make N-channel devices.

Tag Waggener was a WECO guy that came to TTY in ‘73 to lead the effort. He chronicled it in “Teletype, We made That Data Move” (self-published on lulu.com). 

-Paul Kasley W9TS

From: Ed Sharpe Archivist for SMECC via GreenKeys 
Sent: Sunday, February 01, 2015 11:35 AM
To: chrise at pobox.com ; greenkeys at mailman.qth.net 
Subject: Re: [GreenKeys] Fwd: Unknown TTY ICs

and  would teletype  use tty as a product  id?

In a message dated 2/1/2015 10:11:11 A.M. US Mountain Standard Time, chrise at pobox.com writes:
  From the Classic Computing mailing list.

  Did Teletype eventually have their own ICs?  I suspect someone else
  would have designed them for them and then Teletype put their own label
  on but this is the first I have heard of "TTY" ICs.

  One theory is they are from a model 43...??

  Chris N0JCF

  ----- Forwarded message from Kyle Owen <kylevowen at gmail.com> -----

  > Date: Sat, 31 Jan 2015 21:11:44 -0600
  > From: Kyle Owen <kylevowen at gmail.com>
  > To: "General Discussion: On-Topic and Off-Topic Posts"
  >     <cctalk at classiccmp.org>
  > Subject: Unknown TTY ICs
  > 
  > Can anyone identify these TTY ICs? A friend gave them to me, but doesn't
  > recall what they came from.
  > 
  > http://i.imgur.com/AIfiOyY.jpg
  > 
  > Thanks,
  > 
  > Kyle

  ----- End forwarded message -----

  -- 
  Chris Elmquist
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