Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-21 Thread ben via cctalk
On 7/21/2017 8:12 AM, Vincent Slyngstad via cctalk wrote: From: Ethan Dicks: Thursday, July 20, 2017 11:08 AM On Thu, Jul 20, 2017 at 11:35 AM, Norman Jaffe via cctech wrote: Or, in today's dollars - $58. Ouch. Wow! That's many dollars per flip and or flop! If that

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-21 Thread Paul Koning via cctalk
> On Jul 21, 2017, at 10:12 AM, Vincent Slyngstad via cctalk > wrote: > > From: Ethan Dicks: Thursday, July 20, 2017 11:08 AM >> On Thu, Jul 20, 2017 at 11:35 AM, Norman Jaffe via cctech >> wrote: >>> Or, in today's dollars - $58. Ouch. >> Wow!

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-21 Thread Vincent Slyngstad via cctalk
From: Ethan Dicks: Thursday, July 20, 2017 11:08 AM On Thu, Jul 20, 2017 at 11:35 AM, Norman Jaffe via cctech wrote: Or, in today's dollars - $58. Ouch. Wow! That's many dollars per flip and or flop! If that lasted any time at all, one can see the rationale behind

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-21 Thread Marc Howard via cctalk
" In final use, the parts had power applied for no more then an hour." ...and then something goes boom??? Marc On Thu, Jul 20, 2017 at 9:19 AM, Pete Lancashire via cctalk < cctalk@classiccmp.org> wrote: > In 1978 the place I worked the cost per SSI/MSI TTL 38510 device was > between $100 and

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-21 Thread Paul Koning via cctalk
mp.org> > wrote: > > Or, in today's dollars - $58. Ouch. > > From: "General Discussion" <cct...@classiccmp.org> > To: "cctalk" <cctalk@classiccmp.org> > Sent: Thursday, July 20, 2017 1:35:47 AM > Subject: Re: early (pre-1971) edge-trigge

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-21 Thread Ethan Dicks via cctalk
On Thu, Jul 20, 2017 at 11:35 AM, Norman Jaffe via cctech wrote: > Or, in today's dollars - $58. Ouch. Wow! That's many dollars per flip and or flop! > On Wed, Jul 19, 2017 at 11:29 PM, Ethan Dicks wrote: >> I have no datasheet, but I have

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-20 Thread Pete Lancashire via cctalk
In 1978 the place I worked the cost per SSI/MSI TTL 38510 device was between $100 and $200 each by the time they were released to production. the key is the 38510 and the testing. In final use, the parts had power applied for no more then an hour. -pete On Thu, Jul 20, 2017 at 1:35 AM, Eric

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-20 Thread Norman Jaffe via cctalk
Or, in today's dollars - $58. Ouch. From: "General Discussion" <cct...@classiccmp.org> To: "cctalk" <cctalk@classiccmp.org> Sent: Thursday, July 20, 2017 1:35:47 AM Subject: Re: early (pre-1971) edge-triggered D flip-flop ICs On Wed, Jul 19, 2017 at

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-20 Thread Eric Smith via cctalk
On Wed, Jul 19, 2017 at 11:29 PM, Ethan Dicks wrote: > I have no datasheet, but I have examples on DEC M-series FLIP-CHIP > modules from my PDP-8/L, c. 1968. > > I am pretty sure I have examples with 1968 date codes and possibly > 1967 date codes. > Thanks! Also, the 1967

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-19 Thread Ethan Dicks via cctalk
On Wed, Jul 19, 2017 at 6:10 PM, Eric Smith via cctalk wrote: > I'm interested in the history of the logic design for the edge-triggered D > flip-flop, as used in the SN7474... > > Does anyone know what year the SN7474 was introduced, or have an early > datasheet for it

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-19 Thread Eric Smith via cctalk
Thanks for all the info, Brent! The MECL II MC1022 is an edge-triggered D flip-flop using master-slave design. I'll have to look up the others you mentioned, especially the National DM8510 and Sprague NE8828. I've previously overlooked the MC778 mW RTL D flip-flop, which also uses a variant of

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-19 Thread Al Kossow via cctalk
On 7/19/17 5:36 PM, Brent Hilpert via cctalk wrote: > I also have the 65 TI catalog, which introduces the 5400 / future-7400 > series, but the family is only half-a-dozen packages of gates and the 5470 FF > at that point. > I started scanning Allied Electronics catalogs since they give

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-19 Thread Al Kossow via cctalk
On 7/19/17 4:40 PM, Brent Hilpert via cctalk wrote: > There are near-type cross-refs in the 69 book to the National DM8510, Sprague > NE8828, Sprague USN7474, and Signetics N7474. > > I can take and email you photos of the applicable pages if you like. > Don't have a web site up right now to

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-19 Thread Brent Hilpert via cctalk
On 2017-Jul-19, at 3:10 PM, Eric Smith via cctalk wrote: > I'm interested in the history of the logic design for the edge-triggered D > flip-flop, as used in the SN7474. The design is composed of three set-reset > latches (six NAND gates total) per flip-flop. > > Does anyone know what year the

Re: early (pre-1971) edge-triggered D flip-flop ICs

2017-07-19 Thread Chuck Guzis via cctalk
On 07/19/2017 03:10 PM, Eric Smith via cctalk wrote: > I'm interested in the history of the logic design for the edge-triggered D > flip-flop, as used in the SN7474. The design is composed of three set-reset > latches (six NAND gates total) per flip-flop. > > Does anyone know what year the SN7474

early (pre-1971) edge-triggered D flip-flop ICs

2017-07-19 Thread Eric Smith via cctalk
I'm interested in the history of the logic design for the edge-triggered D flip-flop, as used in the SN7474. The design is composed of three set-reset latches (six NAND gates total) per flip-flop. Does anyone know what year the SN7474 was introduced, or have an early datasheet for it (prior to