Altair parts substitutions

From: allisonp_at_world.std.com <(allisonp_at_world.std.com)>
Date: Wed May 24 11:29:45 2000

On Wed, 24 May 2000, Richard Erlacher wrote:

> Are you sure about that, Allison? I recall popping the lid off a
> ceramic-packaged Intel labelled 28-pin logic device back in the '70's and
> finding it housed a die clearly marked NS (under a microscope). In another
> case, it was a PROM and clearly marked with Signetics' logo on the die.

Yes, and so? It conforms with what I said. Now was that 28 pin device
one of those listed?

Also Nec made MOS devices for intel Namely 8274 and 8272 as well.

Allison





>
> Dick
> ----- Original Message -----
> From: <allisonp_at_world.std.com>
> To: <classiccmp_at_classiccmp.org>
> Sent: Wednesday, May 24, 2000 6:39 AM
> Subject: Re: Re[2]: Altair parts substitutions
>
>
> > > (pre-Columbian) data book. IIRC Intel really didn't make any of its TTL
> > > parts, as their fab was dedicated to PMOS, NMOS, and later, CMOS
> devices.
> > > Therefore I'd suspect that the i8205 (and also the i3205) were strictly
> TTL,
> > > or, more correctly, schottky TTL. The i8205, by the way, sinks only 10
> mA
> > > as opposed to the schottky equivalent, the 'S138, which sinks somewhere
> > > between 16 and 24 mA, depending on whose databook of that day you
> consult.
> > > This was probably more specsmanship than technology, however.
> >
> >
> > My intel data book set for the 1974-1981 window is fairly complete and the
> > I8205 has the exact same specs ans the TI LS138. Intel did have bipolar
> > fab back then and parts they did there included things like 3212, 300x,
> > 8216/8126, 8224, 8228/38, an assortment of Bipolar PROMs and later part
> > like 8282, 8283, 8219, 8284, 8284A and others. Their capability is limted
> > so they did farm out stuff (under license) to TI and AMD.
> >
> > Allison
> >
> >
> >
>
Received on Wed May 24 2000 - 11:29:45 BST