| 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 | Internal Oscillators 1 128 Byte RS232, RS485 2.35 V ~ 3.6 V - Yes Yes Yes - - Surface Mount 24-WFQFN Exposed Pad 24-TQFN-EP (3.5x3.5) |