Hi
By the way, there is a company in Texas some place that
is actually making DTL and most likely RTL as well. They
make parts for obsolete equipment. I've lost the url
but I found it with a search on the web. I was always
afraid to even ask what they were charging for the
parts ( most were mil spec as well ).
Dwight
>From: "Arlen Michaels" <arlen_at_acm.org>
>
>on 31/7/02 3:12 PM, Ethan Dicks at erd_6502_at_yahoo.com wrote:
>
>> I am looking for some DTL chips to make a repro W706/W707 TTY
>> interface set for my Straight-8 and PDP-8/S (got *no* serial
>> I/O for them. :-( )
>>
>> http://www.pdp8.net/w-boards/pics/w706.shtml?small
>> http://www.pdp8.net/w-boards/pics/w707.shtml?small
>>
>> The chips there are:
>>
>> W707
>> MC799 Dual Power Buffer (1)
>> MC790 Dual J-K Flip-Flop (8)
>> MC724 Quad Input Gate (5)
>> MC789 Hex Inverter (5)
>> W706
>> MC790 Dual J-K Flip-Flop (9)
>> MC789 Hex Inverter (6)
>> MC724 Quad Input Gate (5)
>> MC799 Dual Power Buffer (1)
>
>The MC7xx were RTL, not DTL. Motorola made them. They typically used a
3.6
>volt power supply, like the Fairchild uL9xx RTL series of the same era
(late
>'60s I think).
>
>Arlen Michaels
>
>
Received on Thu Aug 01 2002 - 13:00:01 BST