The TFDU4100 is an infrared transceiver module compliant with the IrDA standard for serial infrared (SIR) data communication, supporting IrDA speeds up to 115.2 kbit/s. The transceiver module consists of a PIN photodiode, an infrared emitter (IRED), and a low-power analog control IC to provide a total frontend solution in a single package. This SIR transceiver is using the small BabyFace package. The transceivers are capable of directly interfacing with a wide variety of I/O chips which perform the pulse-width modulation/demodulation function, including Vishay Semiconductors' TOIM4232. At a minimum, a cur-