Odd PAL

From: William Donzelli <aw288_at_osfn.org>
Date: Sun Jul 2 14:42:19 2000

> 20C1 is a 24-pin programmable decoder with two sums of 8 product terms OR'd
> into a single final Or/Nor gate. It's clearly intended for use as a
> decoder, having 20 inputs and a single output sum of products with both true
> and complement outputs on separate inputs.
>
> It's right here in my '89 NS programmable logic databook.
>
> If you want, I can (probably fairly soon) scan it for you and email you the
> image (in TIFF).

No, that is OK, but thanks for the offer. I just found these in a pile of
"normal" PALs (16R8, 20L10, and the like), and started to get confused.

It appears that the 20C1 was a dog, as very few people seem to have used
it (or still sell it). I have never seen one on any scrap boards.

William Donzelli
aw288_at_osfn.org
Received on Sun Jul 02 2000 - 14:42:19 BST