| 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 64 Byte RS232, RS485 2.5V, 3.3V - Yes Yes Yes Yes - Surface Mount 28-TSSOP (0.173, 4.40mm Width) 28-TSSOP |