3 Mar
2008
3 Mar
'08
12:16 p.m.
Date: Sun, 2 Mar 2008 12:09:29 -0500 (EST)
From: Steven Hirsch <snhirsch at gmail.com>
On Sun, 2 Mar 2008, Doc Shipley wrote:
> At the risk of sounding like a broken record, MC Howard in Austin,
> Texas
> has been my source for everything from 74-series chips to 64-pin
> wirewrap
The prices on
their website are insane, but I've never heard of them
actually charging what's listed.
Interesting. If I tripped over that website on my own, I wouldn't have
the impression that it was worth my while to deal with them. Literally
everything brings up a page stating "...Coming Soon". 
4 Mar
4 Mar
1:04 a.m.
Hi
What I'd like to know is where is a good source for DTL chips?
While most can be replaced with a TTL, except the 8 input nand.
It can be replaced if it is just used as an 8 input but if the
circuit uses the diode expansion pin, you must use the DTL chip.
Also, I'd love to know what numbers were used for this part
by the different manufactures? It seems that each had their own
numbering system.
Anchor Electronic has a few DTLs but I have no cross reference to
know what they are.
Dwight
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5 Mar
5 Mar
2:17 a.m.
On Tuesday 04 March 2008 01:04, dwight elvey wrote:
Hi
What I'd like to know is where is a good source for DTL chips?
While most can be replaced with a TTL, except the 8 input nand.
It can be replaced if it is just used as an 8 input but if the
circuit uses the diode expansion pin, you must use the DTL chip.
Also, I'd love to know what numbers were used for this part
by the different manufactures? It seems that each had their own
numbering system.
Anchor Electronic has a few DTLs but I have no cross reference to
know what they are.
I'd also like to get a better handle on that stuff for my parts pages, and
add the datasheets in if they're out there somewhere...
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin
6 Mar
6 Mar
10:25 a.m.
Hi
Here is a list of the DTL that Anchor has. Does anyone have
a pinouts and types for these??
930
932
934
936
937
946
948
951
958
962
1800
9093
9034
9099
Knowing what these are would help in knowing what other DTL
numbers are the same part.
Dwight
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10:54 a.m.
dwight elvey wrote:
Hi
Here is a list of the DTL that Anchor has. Does anyone have
a pinouts and types for these??
930
932
934
936
937
946
948
951
958
962
1800
9093
9034
9099
Knowing what these are would help in knowing what other DTL
numbers are the same part.
Dwight
I have data sheets for the following:
930 = expandable dual 4-input NAND
932 = expandable dual 4-input buffer
934 = hex inverter
936 = hex inverter
937 = hex inverter
946 = quad inverter
948 = clocked flip-flop
951 = multivibrator
962 = quad 2-input NAND gate plus inverter
Bob
1:08 p.m.
Bob Rosenbloom wrote:
dwight elvey wrote:
= quad 2-in NAND
Hi
Here is a list of the DTL that Anchor has. Does anyone have
a pinouts and types for these??
930
932
934
936
937
946
948
951
958
962
1800
9093
9034
9099
Knowing what these are would help in knowing what other DTL
numbers are the same part.
Dwight
I have data sheets for the following:
930 = expandable dual 4-input NAND
932 = expandable dual 4-input buffer
934 = hex inverter
936 = hex inverter
937 = hex inverter
946 = quad inverter 948 = clocked flip-flop
951 = multivibrator
962 = quad 2-input NAND gate plus inverter
= triple 3-in NAND
958 = CTL (RTL-class) decade counter
1800 = DTL dual 5-in NAND (although pin diagram shows dual 4-in with exp-in)
9093 = DTL dual JK FF
9034 = ?
9099 = DTL dual JK FF
If 9034 is a type for 9094 then:
9094 = DTL dual JK FF
Source: back pages of Fairchild TTL/78 data book,
does not include full specs, just pinouts and packages.
Also lists RTL stuff, in addition to the DTL.
2:11 p.m.
New subject: OFF TOPIC: Jodrell bank "to close"
Apologies for the off topic post (although it does, sort of, kinda, in a
way, have a tenuous link to Classic Computing).
The Government has announced the closure of the Jodrell Bank radio telescope
in Cheshire, UK - to save just ?2.5m/year. This is, obviously, a major
disaster for astronomy, physics, etc. in the UK. The Lovell Telescope (i.e.
the big dish at Jodrell Bank) was build in 1952 & was the world's largest
steerable radio telescope. It's still the 3rd largest to this day.
Obvuiously, there's been loads of old computers on the site, although sadly
I have no details. Maybe someone else knows?
Anyway - an e-petition has been set up to try to persuade the Prime Minister
(the odious Gordon Brown) to keep it open... Please do sign it if you're a
UK resident or recent ex-pat.
--------------------------------------------------------------
PLEASE do not reply to this post on this list (unless it's to
relate some kind of ClassicCmp related story about Jodrell
Bank).
ESPECIALLY *please* don't reply just to say "I signed"....
--------------------------------------------------------------
Many thanks.
Link to the petition: http://petitions.pm.gov.uk/RadioAstronomy/
News in the Times:
http://www.timesonline.co.uk/tol/news/uk/science/article3492504.ece
Wikipedia entry: http://en.wikipedia.org/wiki/Lovell_Telescope
Many thanks, and I apologise most humbly for hijacking the list for this
post.
Cheers,
Ade.
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09:07
7 Mar
7 Mar
12:53 a.m.
Date: Thu, 6 Mar 2008 10:08:13 -0800
From: hilpert at cs.ubc.ca
To: General at priv-edmwaa04.telusplanet.net
CC:
Subject: Re: Obsolete chips
Bob Rosenbloom wrote:
yes, typo. should be 9094. It seem the 9093 aand 9094 are
identical except one has a stronger pullup.
I found some good information on:
http://wps.archives/solid-state-datasheets/index.html
Dwight
dwight elvey wrote:
= quad 2-in NAND
Hi
Here is a list of the DTL that Anchor has. Does anyone have
a pinouts and types for these??
930
932
934
936
937
946
948
951
958
962
1800
9093
9034
9099
Knowing what these are would help in knowing what other DTL
numbers are the same part.
Dwight
I have data sheets for the following:
930 = expandable dual 4-input NAND
932 = expandable dual 4-input buffer
934 = hex inverter
936 = hex inverter
937 = hex inverter
946 = quad inverter 948 = clocked flip-flop
951 = multivibrator
962 = quad 2-input NAND gate plus inverter
= triple 3-in NAND
958 = CTL (RTL-class) decade counter
1800 = DTL dual 5-in NAND (although pin diagram shows dual 4-in with exp-in)
9093 = DTL dual JK FF
9034 = ?
9099 = DTL dual JK FF
If 9034 is a type for 9094 then: 9094 = DTL dual JK FF
Source: back pages of Fairchild TTL/78 data book,
does not include full specs, just pinouts and packages.
Also lists RTL stuff, in addition to the DTL.
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5982
days inactive
5986
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8 comments
6 participants
participants (6)
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bobalan＠sbcglobal.net -
dkelvey＠hotmail.com -
hilpert＠cs.ubc.ca -
javickers＠solutionengineers.com -
rtellason＠verizon.net -
trag＠io.com