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Isolated 485 - replacement needed

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joebazoka

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Isolated 485

Hi to all. Actually I have develop a system with a RS485 interface. I`m using a MAX1480 device, it have an excellent performance but is very expensive. Anybpdy know a replacement for this device?. I need an isolated device. Thanks and regards.
 

aNdreiBuuu

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...

U can use a non-isolated 485 transceiver and 3 optocoupler (1-rx, 2-tx, 3-Sense)... and a floating powr source for transceiver...
If i have time I'll draw tomorrow a schematic for this...
best,
//a
 

servopump

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Hi joebazoka,

Here is an user manual with schematic for an opto isolated rs232 to rs485
convetter.

ServoPump
 
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joebazoka

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Isolated 485

Great info!!!. Thanks to all for the help.
 

ZeRoN

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I've this circuit, may be useful.
 
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petarpav

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Thanks for schmatic.
Very usefull.
:D
 

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