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'[BUY]: Looking for 74143 or 74LS143!'
2001\01\17@115421 by Chris Eddy

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Sheez, I am having a hard time finding three of either of these parts.
Even the discontinued suppliers find out I want only 3 and say 'Uh, well
call you right back'.

They come in a wide dip24.

Anyone have three in their stuff?  I will pay or trade for them.

Thanks
Chris Eddy

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2001\01\17@130342 by Herbert Graf

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> Sheez, I am having a hard time finding three of either of these parts.
> Even the discontinued suppliers find out I want only 3 and say 'Uh, well
> call you right back'.
>
> They come in a wide dip24.
>
> Anyone have three in their stuff?  I will pay or trade for them.

   I don't have any, but I'm curious, what is it? I couldn't find it in any
of my quick references? Thanks, TTYL

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2001\01\17@150432 by Chris Eddy

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Herbert Graf wrote:

   I don't have any, but I'm curious, what is it? I couldn't find it in any
of my quick references? Thanks, TTYL

Dale Botkin wrote:

>
> What's that do?  I may be able to dig up a few out of the junque box, not
> sure if I have any or not.  I have an awful lot of old TTL/LS/HC/FAST
> stuff in drawers at home (need any 4116 DRAM?).  8-)
>

This part is used to drive a single LED digit, and three make a three digit
counter.  I designed a new product for the customer, and this one is a pre-me
unit that they want repaired somehow.  The 5V regulator gave up and the oh so
delicate logic was exposed to 20V indefinitely.

Thanks much
Chris~

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2001\01\17@171621 by Dale Botkin

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On Wed, 17 Jan 2001, Chris Eddy wrote:

> Herbert Graf wrote:
>
>     I don't have any, but I'm curious, what is it? I couldn't find it in any
> of my quick references? Thanks, TTYL
>
> Dale Botkin wrote:
>
> >
> > What's that do?  I may be able to dig up a few out of the junque box, not
> > sure if I have any or not.  I have an awful lot of old TTL/LS/HC/FAST
> > stuff in drawers at home (need any 4116 DRAM?).  8-)
> >
>
> This part is used to drive a single LED digit, and three make a three digit
> counter.  I designed a new product for the customer, and this one is a pre-me
> unit that they want repaired somehow.  The 5V regulator gave up and the oh so
> delicate logic was exposed to 20V indefinitely.

OK, I'm fairly certain I won't have any of those.  I was very partial to
TIL311 LED displays when I had to use LEDs -- builtin decoder/driver, feed
it 4 bits and get a hex digit. I was lucky enough to pick up a couple of
tubes for free...  simple to use, but those were pricey little critters!!

Dale
---
The most exciting phrase to hear in science, the one that heralds new
discoveries, is not "Eureka!" (I found it!) but "That's funny ..."
               -- Isaac Asimov

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2001\01\17@172051 by Chris Carr
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> Herbert Graf wrote:
>
>     I don't have any, but I'm curious, what is it? I couldn't find it in
any
> of my quick references? Thanks, TTYL
>
> Dale Botkin wrote:
>
> >
> > What's that do?  I may be able to dig up a few out of the junque box,
not
> > sure if I have any or not.  I have an awful lot of old TTL/LS/HC/FAST
> > stuff in drawers at home (need any 4116 DRAM?).  8-)
> >
Chris Eddy Wrote
>
> This part is used to drive a single LED digit, and three make a three
digit
> counter.  I designed a new product for the customer, and this one is a
pre-me
> unit that they want repaired somehow.  The 5V regulator gave up and the oh
so
> delicate logic was exposed to 20V indefinitely.
>
Oh No I'm going to have to resort to my paper archives.

Why not emulate the part with a PIC ?

Regards

Chris

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2001\01\17@172905 by Tony Nixon

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Chris Eddy wrote:
>
> Sheez, I am having a hard time finding three of either of these parts.
> Even the discontinued suppliers find out I want only 3 and say 'Uh, well
> call you right back'.
>
> They come in a wide dip24.
>
> Anyone have three in their stuff?  I will pay or trade for them.
>
> Thanks
> Chris Eddy
>



http://www.micronica.com.au/~micronica/pricelist/chips.htm

Listed at $US3.00 each

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Best regards

Tony

mICro's
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2001\01\17@180154 by Quentin

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IC Master <http://www.icmaster.com> reports:

Part Number                     74143                           SN74143
Manufacturer                  Rochester                         Texas
Instruments

Status          Active
Temperature     Range Com
Low Voltage     (3.3V or less) YES
Packages        DIP
Category        Miscellaneous Counters
Subcategory     -
Technology      TTL
Process         Technology TTL
Function        Decade Counter/Latch, LED/Lamp Driver (constant current
output)

You can also look at the 4510 4511 combination. This is what I used
before PICS. But as an after thought, I would use a PIC as a replacement
nowadays anyway (time spend searching, etc, etc...).

Quentin

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2001\01\17@183522 by Duane Brantley

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Don't give up hope just yet, I might have some at home, seriously.

-----Original Message-----
From: Tony Nixon [.....Tony.NixonKILLspamspam@spam@ENG.MONASH.EDU.AU]
Sent: Wednesday, January 17, 2001 4:30 PM
To: PICLISTspamKILLspamMITVMA.MIT.EDU
Subject: Re: [BUY]: Looking for 74143 or 74LS143!


Chris Eddy wrote:
{Quote hidden}

http://www.micronica.com.au/~micronica/pricelist/chips.htm

Listed at $US3.00 each

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Best regards

Tony

mICro's
http://www.picnpoke.com
.....salesKILLspamspam.....picnpoke.com

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2001\01\17@185830 by jamesnewton

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www.rocelec.com/SearchResults.cfm?Product_Search=74143N
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{Original Message removed}

2001\01\18@073719 by Roman Black

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Chris Carr wrote:
{Quote hidden}

Or, emulate them with 7447 7448 7449, 74247 etc, these are
16 pin chips with 4bit bcd inputs and seven seg driver.
Available in active high or low outputs.
Surely you can patch a 16 pin chip in place quicker
and cheaper than a PIC solution (sorry PIC brothers!)
:o)
-Roman

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2001\01\18@082556 by Quentin

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Roman Black wrote:
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> Surely you can patch a 16 pin chip in place quicker
> and cheaper than a PIC solution (sorry PIC brothers!)
> :o)
> -Roman
Now where's the fun in that?

:)
Quentin

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2001\01\18@102158 by mike

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On Wed, 17 Jan 2001 15:52:35 -0600, you wrote:
Try http://www.gatewayelex.com/7400.htm

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2001\01\18@111213 by mike

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On Thu, 18 Jan 2001 15:11:16 +0200, you wrote:

>Roman Black wrote:
>snip
>> Surely you can patch a 16 pin chip in place quicker
>> and cheaper than a PIC solution (sorry PIC brothers!)
>> :o)
>> -Roman
>Now where's the fun in that?
>
>:)
>Quentin
..or you could do a litte surface-mount PCB to emulate the old
device's footprint. That would be slightly more fun, but not much.

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