Datasheet or info for Fairchild uA3656D?

[Joe R.]

At 02:36 PM 5/19/05 -0400, you wrote:
>>
>>Subject: Re: Datasheet or info for Fairchild uA3656D?
>>   From: "Dwight K. Elvey" <dwight.elvey at amd.com>
>>   Date: Thu, 19 May 2005 09:54:14 -0700 (PDT)
>>     To: cctalk at classiccmp.org
>>
>>>From: "Joe R." <rigdonj at cfl.rr.com>
>>>
>>>At 05:17 PM 5/18/05 -0700, Dwight wrote:
>>>>Hi
>>>> There is a good chance it is an interface part.
>>>>Remember the 8008 bus is not TTL.
>>>
>>>   ????  Ok then what is it? The first page in my Intel 8008 manual says
>>>"TTL Compatible (Input, Output and Clocks)".  Or am I missing something?
>>>
>>>    Joe
>>>
>>>
>>
>>Hi Joe
>> My bad. The spec sheet shows that it will work with TTL.
>>The inputs can go to VDD but don't need to.
>>Dwight
>>
>
>My Databooks and drawings from when I was designing with the beastie
>says with +5 Vcc and -9Vdd all IO will be TTL compatable.
>
>FYI back in that time frame Signetics, Intel and Fairchild had a 
>DTL/TTL product in the 3xxx class numbering.  For example:
>
> 3205 similar to 74138 may be differnt pinout
> 3009 similar to 7432
> 9602  onshot similar to 74123 however the 9602 was truly a better part.
> 3404  8bit wide latch maybe similar to 74100 or 74373

  Correct but I still haven't found any Fairchild 36xx part numbers so I'm
still not sure what these two parts are.  Fairchild did build some memory,
the ram was PN 3530 (I THINK!).


> 
> 1101 256x1 Pmos (two voltages) and really slow (1.5us parts were the 
> fast ones)
>
>There were others but those appear on my drawing and those of the
>MCS-8.

    Are you sure you're not thinking of the Sim-8? That's what's shown in
the 8008 manual. If you have other drawings I'd like to get a copy.

    Joe

>
>The greatest part of that era, 2102 1kx1 1us (initial pricing $16 ea).
>
>Allison
>
>