| 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 | Programmable 1, UART 128 Byte RS485 2.5 V ~ 3.3 V - Yes Yes Yes Yes Yes Surface Mount 32-VFQFN Exposed Pad 32-HVQFN (5x5) |