You're probably right. Even the Signetics catalog is confusing since
both the TTL and DCL parts are 8xxx parts. There's not even an "N" to
differentiate them in it.
joe
At 10:15 PM 1/22/04 +0000, Geoff wrote:
>The difference must be the " N " on the front , but the heading on the page
>says
>
> " Signetics 8400/8800 Series TTL " . Obviously the Texas reference to
>the N8881 is for a later TTL device.
>
>
>----- Original Message -----
>From: "Joe R." <rigdonj_at_cfl.rr.com>
>To: "General Discussion: On-Topic and Off-Topic Posts"
><cctalk_at_classiccmp.org>
>Sent: Thursday, January 22, 2004 6:27 PM
>Subject: Re: brew-your-own-unibus boards?
>
>
>> 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_at_computer-refuge.org>
>> >To: "General Discussion: On-Topic and Off-Topic Posts"
>> ><cctalk_at_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
>> >> --
>> >> Purdue University ITAP/RCS
>> >> Information Technology at Purdue
>> >> Research Computing and Storage
>> >> http://www.itap.purdue.edu/rcs/
>> >
>> >
>
>
Received on Thu Jan 22 2004 - 16:37:51 GMT