naming conventions

I

Info

Guest
hi all,
there is anybody that can help me to find a pdf manual on naming
conventions...
example 74hct instead 74hc
or 29c020 instead 29f040
thanks
 
"Info" <qjbpe@noname.com> wrote in message
news:bn08bo$20n$1@newsserver.unipi.it...
hi all,
there is anybody that can help me to find a pdf manual on naming
conventions...
example 74hct instead 74hc
or 29c020 instead 29f040
thanks

Google on a search term like '+7400 +logic +families'
Click to expand...

Ken
 
"Ken Taylor" <ken@home.nz> wrote in message
news:NDNkb.184492$JA5.4597745@news.xtra.co.nz...
"Info" <qjbpe@noname.com> wrote in message
news:bn08bo$20n$1@newsserver.unipi.it...
hi all,
there is anybody that can help me to find a pdf manual on naming
conventions...
example 74hct instead 74hc
or 29c020 instead 29f040
thanks

Google on a search term like '+7400 +logic +families'

Ken
Click to expand...
thanks I've tried,
I'm looking for an extended naming devices document because there is an
international standard for builders,
I've found something at http://www.philipslogic.com/products/naming/ but it
isn't the international standard for naming (like ISO, etc).
other ideas?
 
In article <bn0cuc$24q$1@newsserver.unipi.it>, qjbpe@noname.com
mentioned...
"Ken Taylor" <ken@home.nz> wrote in message
news:NDNkb.184492$JA5.4597745@news.xtra.co.nz...
"Info" <qjbpe@noname.com> wrote in message
news:bn08bo$20n$1@newsserver.unipi.it...
hi all,
there is anybody that can help me to find a pdf manual on naming
conventions...
example 74hct instead 74hc
or 29c020 instead 29f040
thanks

Google on a search term like '+7400 +logic +families'

Ken



thanks I've tried,
I'm looking for an extended naming devices document because there is an
international standard for builders,
I've found something at http://www.philipslogic.com/products/naming/ but it
isn't the international standard for naming (like ISO, etc).
other ideas?
Click to expand...
If you want an EIA or ISO standards document, you have to pay for it.
They aren't cheap.

--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@
 
thanks I've tried,
I'm looking for an extended naming devices document because there is an
international standard for builders,
I've found something at http://www.philipslogic.com/products/naming/ but it
isn't the international standard for naming (like ISO, etc).
other ideas?
Click to expand...
I don't believe that a standard exists for naming
logic & memory. (suchas the JEDEC standard for discretes 1N 2N 3N
and 4N type devices).

In the case of logic nomenclature companies like TI National
Fairchild Philips and others improved the basic 7400 series and
included part number designators to
define the improvements or the choices availables.

7400 std TTL
74S00 Schottky
74LS00 low power Schottky
74ALS00 Advanced low power Schottky
74AS00 Advanced Schottky
74AC00 Advanced CMOS
74ACT00 Advanced CMOS TTL compatible
74F00 Fast

etc etc The commonalities in the part numbers among the main
manufacturers are a sales technique to promote market share and
increase new designs for the manufacturer.

To the best of my knowledge a standards committe doesn't exist to
define functionality and part numbering on either family. That's the
choice of the manufacturer who invents it and the other manufacturers
who cross license the production rights.

PR
 
In
alt.electronics,sci.electronics,sci.electronics.components,sci.electronics.design,
"Info" <qjbpe@noname.com> wrote:

"Ken Taylor" <ken@home.nz> wrote in message
news:NDNkb.184492$JA5.4597745@news.xtra.co.nz...
"Info" <qjbpe@noname.com> wrote in message
news:bn08bo$20n$1@newsserver.unipi.it...
hi all,
there is anybody that can help me to find a pdf manual on naming
conventions...
example 74hct instead 74hc
or 29c020 instead 29f040
thanks

Google on a search term like '+7400 +logic +families'

Ken



thanks I've tried,
I'm looking for an extended naming devices document because there is an
international standard for builders,
I've found something at http://www.philipslogic.com/products/naming/ but it
isn't the international standard for naming (like ISO, etc).
other ideas?
Click to expand...
There's no "international standard." When a manufacturer came out
with a new family, the manufacturer gave it a new name, and often
other manufacturers followed with their line of (semi)compatible parts
with the same name. It's usually a mnemonic or abbreviation of the
family name. HC is high-speed CMOS, HCT is high-speed CMOS with TTL
I/O voltage levels.
29c020 is surely a CMOS part, and ISTR 29f040 is a Flash part. But
these two are not TTL or considered part of any 'ttl family' so any
'rules' that might apply to 'TTL' type families may not apply here.
Fairchild made 74Fxx where the F is for FAST, some acronym that starts
with Fairchild, and that's a different use of F than in the 29F040.
This was actually an improvement over previous numbering
conventions. The original TTL series started at 7400, the original
CMOS was the 4000 series, there were different ranges of numbers (I
actually forget, which is probably a good thing) for RTL and ECL.
Another possible websearch string might be history of ttl.

 
In article <c908pvsc01m2mb4bdcangefmatgdkf789j@4ax.com>,
punkrat@cheddar.com mentioned...
thanks I've tried,
I'm looking for an extended naming devices document because there is an
international standard for builders,
I've found something at http://www.philipslogic.com/products/naming/ but it
isn't the international standard for naming (like ISO, etc).
other ideas?


I don't believe that a standard exists for naming
logic & memory. (suchas the JEDEC standard for discretes 1N 2N 3N
and 4N type devices).

In the case of logic nomenclature companies like TI National
Fairchild Philips and others improved the basic 7400 series and
included part number designators to
define the improvements or the choices availables.

7400 std TTL
7400 Is the commercial temperature range. 5400 is the Military
Click to expand...
temperature range.

74S00 Schottky
74LS00 low power Schottky
74ALS00 Advanced low power Schottky
74AS00 Advanced Schottky
74AC00 Advanced CMOS
74ACT00 Advanced CMOS TTL compatible
74F00 Fast
Click to expand...
I believe all the early 7400 chips were made by TI and were labeled
SN7400, etc. In order to convince govermnents and companies to buy
the chips, a company would have to allow another company to 'second
source' the chips. So National had the DM7400, etc. Perhaps this is
why the 7400 series and its later successors retained and modified
this 'industry standard' naming convention. Sort of a consensus.


etc etc The commonalities in the part numbers among the main
manufacturers are a sales technique to promote market share and
increase new designs for the manufacturer.

To the best of my knowledge a standards committe doesn't exist to
define functionality and part numbering on either family. That's the
choice of the manufacturer who invents it and the other manufacturers
who cross license the production rights.

PR
Click to expand...
--
@@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@
###Got a Question about ELECTRONICS? Check HERE First:###
http://users.pandora.be/educypedia/electronics/databank.htm
My email address is whitelisted. *All* email sent to it
goes directly to the trash unless you add NOSPAM in the
Subject: line with other stuff. alondra101 <at> hotmail.com
Don't be ripped off by the big book dealers. Go to the URL
that will give you a choice and save you money(up to half).
http://www.everybookstore.com You'll be glad you did!
Just when you thought you had all this figured out, the gov't
changed it: http://physics.nist.gov/cuu/Units/binary.html
@@t@h@e@@a@f@f@l@u@e@n@t@@m@e@e@t@@t@h@e@@E@f@f@l@u@e@n@t@@
 
Ben Bradley wrote:

In

alt.electronics,sci.electronics,sci.electronics.components,sci.electronics.design,
"Info" <qjbpe@noname.com> wrote:


"Ken Taylor" <ken@home.nz> wrote in message
news:NDNkb.184492$JA5.4597745@news.xtra.co.nz...
"Info" <qjbpe@noname.com> wrote in message
news:bn08bo$20n$1@newsserver.unipi.it...
hi all,
there is anybody that can help me to find a pdf manual on naming
conventions...
example 74hct instead 74hc
or 29c020 instead 29f040
thanks

Google on a search term like '+7400 +logic +families'

Ken



thanks I've tried,
I'm looking for an extended naming devices document because there is an
international standard for builders,
I've found something at http://www.philipslogic.com/products/naming/ but
it isn't the international standard for naming (like ISO, etc).
other ideas?

There's no "international standard." When a manufacturer came out
with a new family, the manufacturer gave it a new name, and often
other manufacturers followed with their line of (semi)compatible parts
with the same name. It's usually a mnemonic or abbreviation of the
family name. HC is high-speed CMOS, HCT is high-speed CMOS with TTL
I/O voltage levels.
29c020 is surely a CMOS part, and ISTR 29f040 is a Flash part. But
these two are not TTL or considered part of any 'ttl family' so any
'rules' that might apply to 'TTL' type families may not apply here.
Fairchild made 74Fxx where the F is for FAST, some acronym that starts
with Fairchild, and that's a different use of F than in the 29F040.
This was actually an improvement over previous numbering
conventions. The original TTL series started at 7400, the original
CMOS was the 4000 series, there were different ranges of numbers (I
actually forget, which is probably a good thing) for RTL and ECL.
Another possible websearch string might be history of ttl.
Click to expand...
RTL was 9xx from what I can remember (and no doubt other numbers as well).
And then there's early Motorola TTL, which was 3xxx and 4xxx numbers, just
to keep us good and confused! :)

And you're forgetting about DTL entirely!
 
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