Hi all,
I use the SN65LBC184 as a RS485 transceiver in a multi-point RS485 bus configuration.
According to the data sheet, table "driver function table", the output driver should be in "Z" state if the pin DE is at LOW level.
Now I measure that the output driver drive perfect levels (1V / 3.5V) even if the pin DE is stable at GND level, measured with open i/o pins (no load).
This changes the voltage level at the bus line making the communication instable.
Where might be my fault, what might be wrong?
/cu
Jens