Quotethe slash after the name or the "overscore"Also the small circle on the graphic, on chips that means an active low or inverted signal.Just some notes about schematic layout.If you mirror image the remote chip the drawing will be a lot clearer.When things are tied to power rails it's almost always better (clearer) to have VCC going up and GND going down. Your caps go up.Most beginners make a real dog's breakfast by running the GND wire to every possible place. You haven't done that which is good, in this case however I would argue that because these chips are physically remote from each other you should draw the GND line between the two to reinforce that they have to have a common GND and that that is formed by a GND wire in the cable.______Rob
the slash after the name or the "overscore"
Quote from: retrolefty on Nov 14, 2012, 02:28 amOn the remote end you really should ground pin 3, DE, to make sure it's transmit driver is forced off into tri-state mode.LeftyAccording to the table it shouldn't care but I guess better safe than sorry Version 4 then:
On the remote end you really should ground pin 3, DE, to make sure it's transmit driver is forced off into tri-state mode.Lefty
Thanks guys, really appreciate your input! One more question then. Over here, Icc is specified as 0.375 mA typical, the PDF datasheet I have says max 1.000 mA. So I assume it will be safe to power the chips from the Arduinos 5V if the local Arduino is USB powered?
I have experience with RS-485 but Lefty has made a career of using it in very bad environments