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From: stevel@dartvax.UUCP (Steve Ligett)
Newsgroups: net.micro
Subject: Chips I'd like to see
Message-ID: <3477@dartvax.UUCP>
Date: Wed, 14-Aug-85 08:45:50 EDT
Article-I.D.: dartvax.3477
Posted: Wed Aug 14 08:45:50 1985
Date-Received: Sun, 18-Aug-85 05:12:29 EDT
Distribution: net
Organization: Dartmouth College, Hanover, NH
Lines: 27

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Old News - The RS-422 transceiver someone mentioned last month
is now in production.  It's called the 75176; I bought 1000
last November for $1.25 each.  I wanted to use it as an AppleBus
transceiver, but there was too little isolation between the
receiver and xmitter (that is, I seemed to get crosstalk
that ended up giving me oscillation).  Also it's second-sourced
by Fairchild and NSC.  (I don't think they call it the 75176,
though.)  I did end up using the chips as drivers, and used
am26ls32bpc or am26ls34pc for the receivers.
 
Chips I want -
 
RS-422 drivers with individual enables, rather than one enable
for all four (see above).
 
A 1 Megabit DRAM in 16 pin package (common I/O).
 
A quint 2-input address mux with latches on the inputs.
Having the outputs optimized so series resistors aren't
needed when driving DRAMS would be nice too.
-- 
(my employer is likely to be unaware of my opinions...)
 
Steve Ligett    CSNET:stevel@dartmouth   or   UUCP:(astrovax colby
 cornell creare dalcs decvax harvard ihnp4 jinx linus lscvax psc70 
 research true uscga uvm-gen)!dartvax!stevel