[time-nuts] RS485/422/232 Chip
Christian Vogel
vogelchr at vogel.cx
Sat Apr 26 06:17:09 EDT 2008
Hi Bruce,
>> The MAXIM MAX3162E will do RS485/422 and RS232 in the one chip , get samples from maxim.com.
>>
> These devices only implement a single RS485/RS422 transmitter and receiver.
>
That's true for the 3160 which can be switched between two RX and two TX
of RS232 or one RX and one TX of RS485.
The 3162 does both functions simultaneously.
I had a look at the MAX3535E recently, which has a isolated RS485
transceiver with capacitive coupling in it, did anyone of you use those
to break ground-loops? I'm especially interested if this kind of
"capacitor-isolation barrier" adds any significant noise to the RS485
lines, which might couple into sensitive signals running in parallel, or
if I should just go the traditional optocoupler-route.
Greetings from Germany,
Chris
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