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From: asilver@grad1.cis.upenn.edu (Andy Silverman)
Newsgroups: sci.electronics
Subject: Anybody know of line drivers for EIA485,422?
Message-ID: <28801@netnews.upenn.edu>
Date: 24 Aug 90 14:10:59 GMT
Sender: news@netnews.upenn.edu
Reply-To: asilver@grad1.cis.upenn.edu (Andy Silverman)
Organization: University of Pennsylvania
Lines: 20

I'm working on a project (A DMX512 compatible dimmer controller) which
requires all data transmission to conform to EIA-485, which is for
most practical intents and purposes the EIA(or RS)-422 spec.  This is
a balanced line with a voltage differential between the two lines of
at least 1.5V into 54 ohms. (EIA-422 is 2V into 100 ohms, >1/2 open
circuit V, according to the EIA-486 spec., so anything that conforms
to EIA-422 should be OK for 485, right?)
 
In any event, I need part numbers for line drivers that can be used
for this sort of thing, and are available from places like Jameco,
etc.
 
Thanks.
Please E-Mail replies.
 
Andy
+-----------------------+-----------------------------------------+
| Andy Silverman        | Internet:   asilver@grad1.cis.upenn.edu |
| "Grrr."               | Compu$erve: 72261,531  Prodigy: JCSB27A |
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