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Author Topic: need data sheets for IC ULN2111A  (Read 606 times)
WB9OMC
Member

Posts: 10




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« on: May 18, 2004, 03:51:05 PM »

I just built a Ramsey FR1 FM receiver, which works pretty well and to complete my documentation, I need the data sheet for the ULN2111A.  Ramsey will not even
tell me who made it, which is disappointing as I do
not see what difference it makes to them.....but,
a web search has also proven pretty useless so far.
I was trying to negotiate the National Semiconductor
site for the LM2111 which is supposedly a cross
reference but their site is so anally retentive and
stupid that you can't find anything you want!

If anyone out there has the goods on this IC, please
let me know.

email: wb9omc@nlci.com
fax at work: 765-471-9600
(mon to weds 10 AM to 6 PM
thursday 10 AM to 1 PM
Friday 10 AM to 6 PM central time)
same phone number for voice also
during those times.

Thanks!
Duane
WB9OMC
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KE6PKJ
Member

Posts: 256




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« Reply #1 on: May 28, 2004, 02:13:05 AM »

Found this defunct companies information on your chip.

MC1357P IF Amp and Quadrature Detector (Direct Replacement for ULN2111A) $1.40 $1.20...
www.cir.com/parts/linic/linic.htm

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KE6PKJ
Member

Posts: 256




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« Reply #2 on: May 28, 2004, 02:20:37 AM »

ALLEGRO is/was the manufacturer.

http://www.datasheetarchive.com/cgi-bin/search.php?search=uln2111a&Search=Search
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