kkdelabaca
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Hello,
I see that is very important protect the RS485 bus form Contact Discharges or Fast Transient Burst. Some devices have this protection inside the same chip but often are more expensive. What is the best element to protect the bus? I'm looking for one solution with best price.
Also, for one application I need to know when the bus is in High, Low and High Impedance. The next image show the typical circuit to transmit and recive (green circle). This device return '1' when A > (B+Treshold) and '0' in other cases.
**broken link removed**
Now, to create the difference between Low and High Impedance, I put one transceiver (red circle) with inverted inputs. This circuit can help to detect TRUE TRI-STATE? This connection can generate any problem?
BR,
I see that is very important protect the RS485 bus form Contact Discharges or Fast Transient Burst. Some devices have this protection inside the same chip but often are more expensive. What is the best element to protect the bus? I'm looking for one solution with best price.
Also, for one application I need to know when the bus is in High, Low and High Impedance. The next image show the typical circuit to transmit and recive (green circle). This device return '1' when A > (B+Treshold) and '0' in other cases.
**broken link removed**
Now, to create the difference between Low and High Impedance, I put one transceiver (red circle) with inverted inputs. This circuit can help to detect TRUE TRI-STATE? This connection can generate any problem?
BR,