| Features Number of Channels FIFO Protocol Voltage - Supply With Parallel Port With Auto Flow Control With IrDA Encoder Decoder With False Start Bit Detection With Modem Control With CMOS Mounting Type Package / Case | - 2, DUART 256 Byte RS485 3.3V - Yes Yes Yes Yes - Surface Mount 113-LFBGA 113-FPBGA (9x9) |