stevel@dartvax.UUCP (Steve Ligett) (08/14/85)
*** REPLACE THIS LINE WITH YOUR MESSAGE *** 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