UPD4721GS-GJG PDF File ( Datasheet )

DATA SHEET MOS INTEGRATED CIRCUIT P D 4 7 2 1 RS-232 LINE DRIVER, RECEIVER AT 3.3 V, 5 V The PD4721 is a high-breakdown voltage silicon gate CMOS line driver, receiver based on the EIA, TIA-232E standard. The internal DC, DC converter can switch between multiple voltages, realizing the allowing it to operate with a single +3.3 V or +5 V power supply. It also provides standby function. This IC incorporates 2 driver circuits and 2 receiver circuits. An RS-232 interface circuit can be easily