Altair parts substitutions

From: Richard Erlacher <richard_at_idcomm.com>
Date: Wed May 24 09:55:27 2000

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.

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 - 09:55:27 BST

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