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From: whit@milton.u.washington.edu (John Whitmore)
Newsgroups: sci.electronics
Subject: Re: Anybody know of line drivers for EIA485,422?
Message-ID: <6742@milton.u.washington.edu>
Date: 26 Aug 90 07:08:43 GMT
References: <28801@netnews.upenn.edu> <25171@boulder.Colorado.EDU>
Distribution: usa
Organization: University of Washington, Seattle
Lines: 18

In article <25171@boulder.Colorado.EDU> rainer@boulder.Colorado.EDU (Rainer Malzbender) writes:
>
><regarding RS-485 and RS-422 transceivers>. Part numbers from National are
>DS3695-DS3698 and DS75176 for transceivers.
>
>You can't get these chips from Jameco, though, but you can order stuff
>from distributors or National sales offices.
>
	Jameco lists the 75176 in their '90 catalog, for $2.25.
Also, the Macintosh ports are convertible to Appletalk (which is a
renaming of RS-485, as near as I can tell); they use 26LS30/26LS32
driver/receiver chips, both of which are also available from Jameco
(under $2).  Also listed as RS-422 driver/receiver are the MC3486 and 
MC3487, for $1.29 each (MC3486 is quad receiver, MC3487 is quad transmitter).
The only relevant chips Jameco DOESN'T stock are the National
DS36nn parts...

		John Whitmore