| 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 | Transceiver - 8 Byte RS232, RS485 4.75 V ~ 5.25 V - - Yes Yes - Yes Surface Mount 28-QSOP 28-QSOP |