Altair parts substitutions

From: allisonp <allisonp_at_world.std.com>
Date: Wed May 24 21:44:07 2000

--->Intel's 5V 1K*8 part was the 2758. Other posts have claimed that an
Intel
>2758 is a half-bad 2716, but my fuzzy recollection from that era was that
>the ones I looked at had substantially different die sizes. For half-bad
>parts Intel usually added a suffix to the part number to denote which half
>was bad, and I didn't see such a designation on any of the 2758s I used.


I have samples of both with the same PN large die half bad and small die
1k part.

>> My sense is that they called their 5-volt parts 8708's.
>
>Nope, that required the same supplies as the 2708, since it was
>really the same part.


Both right, same part. Different catalongs and different years.

>Because there *wasn't* an industry standard on the 2K*8 EPROM at the time
>when TI and Intel both announced their parts. I think Intel's move to
>the single 5V supply caught TI completely by surprise.


That and TI cpu of the time (TI9900) was three voltage so any system
was likely to have the needed voltages. What caught TI off guard is
the industry desire for single voltage.


Allison
Received on Wed May 24 2000 - 21:44:07 BST