CMOS Digital IC's

J

JERD

Guest
I would be grateful if someone can suggest a (single) suitable web site that
has application notes and basic circuits for the more popular CMOS digital
IC range.

I want to do some basic experimenting to raise my level of knowledge in the
use of these devices.

Approaching 70 I hope I am not letting myself in for too much!

JD
 
JERD wrote:
I would be grateful if someone can suggest a (single) suitable web site that
has application notes and basic circuits for the more popular CMOS digital
IC range.

I want to do some basic experimenting to raise my level of knowledge in the
use of these devices.

Approaching 70 I hope I am not letting myself in for too much!

JD
Click to expand...
The Talking Electronics website usually has some useful books, kits and
circuits available to begin with:

http://www.talkingelectronics.com/AllKitsWithPics/Books.html

http://www.talkingelectronics.com/te_interactive_index.html
 
"JERD" <jedunkremove@bigpond.net.au> wrote in message
news:B_zam.7248$ze1.220@news-server.bigpond.net.au...
I would be grateful if someone can suggest a (single) suitable web site
that has application notes and basic circuits for the more popular CMOS
digital IC range.

I want to do some basic experimenting to raise my level of knowledge in
the use of these devices.

Approaching 70 I hope I am not letting myself in for too much!

JD

This may result in howls of disagreement from experts. If you want to go
Click to expand...
'free form', ie. put together a few DIP logic ICs and connect them together
according to your own design, then IMO the easiest way to go is still wire
wrap, at least noone has shown me a better way yet for quick prototyping.

The best sockets for DIPs by far are turned pin sockets. If you can't find
these for wire wrap, then AFAIK you can still obtain 0.1" single inline
headers with wire wrap on one end and a turned pin on the other. You just
snip off the required lengths and insert into 0.1" spacing matrix board to
make up your DIP sockets.

As far as tooling goes, all you need is a hand wire wrapper/unwrapper tool,
and a couple of spools of wire wrap wire. Since you can easily unplug chips
and unwrap connections, your board, sockets and ICs all become reusable.
OTOH, assembly with turned pin sockets and wire wrap is actually extremely
reliable, I have devices made this way that have been running for many years
with no problems.

Good luck and enjoy.
 
Bruce Varley wrote:
"JERD" <jedunkremove@bigpond.net.au> wrote in message
news:B_zam.7248$ze1.220@news-server.bigpond.net.au...
I would be grateful if someone can suggest a (single) suitable web
site that has application notes and basic circuits for the more
popular CMOS digital IC range.

I want to do some basic experimenting to raise my level of knowledge
in the use of these devices.

Approaching 70 I hope I am not letting myself in for too much!

JD

This may result in howls of disagreement from experts. If you want to
go 'free form', ie. put together a few DIP logic ICs and connect them
together according to your own design, then IMO the easiest way to go
is still wire wrap, at least noone has shown me a better way yet for
quick prototyping.
Click to expand...
You have obviously never used a solderless breadboard.

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog & Podcast:
http://www.alternatezone.com/eevblog/
 
JERD wrote:
I would be grateful if someone can suggest a (single) suitable web site that
has application notes and basic circuits for the more popular CMOS digital
IC range.
Click to expand...
Motorola is now calling themselves 'Freescale'.

You can find their appnotes here:
<http://www.freescale.com/webapp/search/Serp.jsp?pageNodeId=from+search&pageType=from+search&recrdHistDwnlodComnd=DOWNLOAD&fsrch=1&isAdvanceSearch=false&showCustomCollateral=false&RELEVANCE=true&fromTrng=false&showAllCategories=false&fromPSP=false&SelectedAsset=Documentation&assetLocked=false&assetLockedForNavigation=false&isResult=false&searchSessionId=16f94f51248535575037.0&fromDAP=false&fromWebPages=false&isTree=false&isFromFlex=false&pageSize=25&isComparison=false&Documentation=Documentation%2F11010KscRcb%60%60Application+Notes>

I want to do some basic experimenting to raise my level of knowledge in the
use of these devices.

Approaching 70 I hope I am not letting myself in for too much!
Click to expand...
Good luck! ;^)

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
 
David L. Jones wrote:
Bruce Varley wrote:
"JERD" <jedunkremove@bigpond.net.au> wrote in message
news:B_zam.7248$ze1.220@news-server.bigpond.net.au...
I would be grateful if someone can suggest a (single) suitable web
site that has application notes and basic circuits for the more
popular CMOS digital IC range.

I want to do some basic experimenting to raise my level of knowledge
in the use of these devices.

Approaching 70 I hope I am not letting myself in for too much!

JD

This may result in howls of disagreement from experts. If you want to
go 'free form', ie. put together a few DIP logic ICs and connect them
together according to your own design, then IMO the easiest way to go
is still wire wrap, at least noone has shown me a better way yet for
quick prototyping.

You have obviously never used a solderless breadboard.

Dave.
Click to expand...

I used both and found the solderless boards easier, Rockby Electronic
also had em on sale once. Also I found the machined pin sockets wore
out after a few insertions and the cheaper wipe contact versions lasted
longer in an EPROM programmer I built.
 
"JERD" <jedunkremove@bigpond.net.au> wrote in message
news:B_zam.7248$ze1.220@news-server.bigpond.net.au...
I would be grateful if someone can suggest a (single) suitable web site
that has application notes and basic circuits for the more popular CMOS
digital IC range.

I want to do some basic experimenting to raise my level of knowledge in
the use of these devices.

Approaching 70 I hope I am not letting myself in for too much!
Click to expand...
**This is what I purchased many years ago. It should provide a good, basic
grounding in what you need to know. Included are some projects and pinouts
of most popular types, along with some good theory.

http://www.amazon.com/CMOS-Cookbook-Second-DON-LANCASTER/dp/0750699434/ref=sr_1_1?ie=UTF8&qid=1248558379&sr=8-1

As others have suggested, a solderless breadboard, a power supply and you're
good to go.


--
Trevor Wilson
www.rageaudio.com.au
 
JERD wrote:
I would be grateful if someone can suggest a (single) suitable web site that
has application notes and basic circuits for the more popular CMOS digital
IC range.

I want to do some basic experimenting to raise my level of knowledge in the
use of these devices.

Approaching 70 I hope I am not letting myself in for too much!

JD
Click to expand...
While I think of it Jerd, CMOS IC based circuits benefit from inputs
that are not being used being tied to GND with a 4.7M resistor to avoid
picking up mains or other interference. Also inputs that ARE being used
can benefit from such a resistor to GND.

A 0.1uF capacitor across each IC's power pins helps to bypass the
supply rails and finally, if you do solder up a circuit on a PCB or a
breadboard PCB, make sure you clean the flux off the board with a
toothbrush and metho as the flux can pass enough leakage current between
the close pins of a DIP package CMOS IC to cause problems.
 
"David L. Jones" <altzone@gmail.com> wrote in message
news:8XEam.58742$rg4.19615@newsfe02.iad...
Bruce Varley wrote:
"JERD" <jedunkremove@bigpond.net.au> wrote in message
news:B_zam.7248$ze1.220@news-server.bigpond.net.au...
I would be grateful if someone can suggest a (single) suitable web
site that has application notes and basic circuits for the more
popular CMOS digital IC range.

I want to do some basic experimenting to raise my level of knowledge
in the use of these devices.

Approaching 70 I hope I am not letting myself in for too much!

JD

This may result in howls of disagreement from experts. If you want to
go 'free form', ie. put together a few DIP logic ICs and connect them
together according to your own design, then IMO the easiest way to go
is still wire wrap, at least noone has shown me a better way yet for
quick prototyping.

You have obviously never used a solderless breadboard.

Dave.

I have, and for trying things out you're right, it's easier. The approach
Click to expand...
I'm suggesting is more for building something that's going to be put in a
box and used.
 
JERD wrote:

I would be grateful if someone can suggest a (single) suitable web site that
has application notes and basic circuits for the more popular CMOS digital
IC range.

I want to do some basic experimenting to raise my level of knowledge in the
use of these devices.
Click to expand...
Well, there nothing special about the original 4000 series CMOS logic ICs over
74 series 'TTL' types except fpr the supply voltage range. They all perform much
the same functions. Indeed 'TTL' types are usually these days a CMOS version of
the original e.g. 74HC00.

I'd recommend learning logic functions such as combinational, latched, clocked
etc and learn Karnaugh maps.

Graham


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Bruce Varley wrote:

The best sockets for DIPs by far are turned pin sockets.
Click to expand...
For prototyping maybe. Use them in production and chips will 'walk' out of the
sockets due to thermal cycling.

Graham


--
due to the hugely increased level of spam please make the obvious adjustment to
my email address
 
Bob Larter wrote:

JERD wrote:
I would be grateful if someone can suggest a (single) suitable web site that
has application notes and basic circuits for the more popular CMOS digital
IC range.

Motorola is now calling themselves 'Freescale'.
Click to expand...
Not true. Mototola divested itself of various 'commodity' transistor and IC / CPU lines to ON Semiconductor and Freescale.

Motorola still exists, although AFAICS only makes mobile phones now.

Graham

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due to the hugely increased level of spam please make the obvious adjustment to my email address
 
Mark Harriss wrote:

JERD wrote:
I would be grateful if someone can suggest a (single) suitable web site that
has application notes and basic circuits for the more popular CMOS digital
IC range.

I want to do some basic experimenting to raise my level of knowledge in the
use of these devices.

Approaching 70 I hope I am not letting myself in for too much!

While I think of it Jerd, CMOS IC based circuits benefit from inputs
that are not being used being tied to GND with a 4.7M resistor to avoid
picking up mains or other interference. Also inputs that ARE being used
can benefit from such a resistor to GND.
Click to expand...
I think you got yourself confused there.

Graham

--
due to the hugely increased level of spam please make the obvious adjustment to my
email address
 
Eeyore wrote:
Mark Harriss wrote:

JERD wrote:
I would be grateful if someone can suggest a (single) suitable web site that
has application notes and basic circuits for the more popular CMOS digital
IC range.

I want to do some basic experimenting to raise my level of knowledge in the
use of these devices.

Approaching 70 I hope I am not letting myself in for too much!
While I think of it Jerd, CMOS IC based circuits benefit from inputs
that are not being used being tied to GND with a 4.7M resistor to avoid
picking up mains or other interference. Also inputs that ARE being used
can benefit from such a resistor to GND.

I think you got yourself confused there.

Graham

--
due to the hugely increased level of spam please make the obvious adjustment to my
email address
Click to expand...
Ok I'll bite... which part?
 
For prototyping maybe. Use them in production and chips
will 'walk' out of the sockets due to thermal cycling.

Graham
Click to expand...

I'm interested in your experience with chips walking out the
sockets of machined pin types. What type of product and what
type of vibration environment have you seen this happen in?
 
GeoffC wrote:

For prototyping maybe. Use them in production and chips
will 'walk' out of the sockets due to thermal cycling.

I'm interested in your experience with chips walking out the
sockets of machined pin types. What type of product and what
type of vibration environment have you seen this happen in?
Click to expand...
Neve DSP boards. It was thermal cycling, although vibration could likely
do it as well. For manufacturing I always use the reversed V-shape
contact that grips the lead like shit sticks to a blanket. They're also
inexpensive.

Graham


--
due to the hugely increased level of spam please make the obvious
adjustment to my email address
 
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