22 Jan
2004
22 Jan
'04
12:27 p.m.
I missed the first part of this discussion and I just found this message
by chance. However it is NOT TTL, it's DCL according to my 1971 Signetics
Digital 8000 Series TTl/MSI catalog. Since it's not TTL this catalog
doesn't have a data sheet for it but they do have a list of all of their
ICs including the DCL ones and it's listed there. They say that it's a Quad
2-input NAND gate and that it's listed in the DCL supplement handbook.
Joe
At 05:48 PM 1/22/04 +0000, you wrote:
Signetics 8881 is
14 - Vcc
7 - Gnd
13 - o/p A
12&11 - i/p's A
10 - o/p B
8 & 9 - i/p's B
1 - o/p C
2&3 - i/p's C
4 - o/p D
5&6 - i/p's D
Device is TTL. Info from old Quarndon Electronics Digital Intergrated
Circuits Catalogue circa 1970's.
Geoff.
----- Original Message -----
From: "Patrick Finnegan" <pat(a)computer-refuge.org>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk(a)classiccmp.org>
Sent: Wednesday, January 21, 2004 12:10 AM
Subject: Re: brew-your-own-unibus boards?
On Tuesday 20 January 2004 18:06, Tony Duell
wrote:
Driver : 8881 (quad 2 input NAND with open
collector outputs)
Does anyone have a spec sheet on the 8881's? I "might" have a few of
them laying around that I could use right about now... If nothing
else, a pinout would be helpful.
Pat
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