| 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 | - 4, QUART 64 Byte RS485 3.3V, 5V - Yes Yes Yes Yes - Surface Mount 144-LQFP 144-LQFP (20x20) |