UPD4712D

DATA SHEET MOS INTEGRATED CIRCUIT µPD4712C/4712D RS-232 LINE DRIVER/RECEIVER The µPD4712C and 4712D are high-voltage silicon gate CMOS line driver/reciever conforming to the EIA/TIA-232-E standard. It can operate with a single +5 V power source because it is provided with a DC-DC converter. In addition, this line driver/receiver has many ancillary functions, including output control, threshold select, and standby functions. Because the µPD4712C and 4712D are provided with four output driver circuits and four receiver circuits, it can constitute an RS-232 interface circuit with a single chip. FEATURES Conforms to EIA/TIA-232-E (RS-232C) standard +5 V single power source Threshold select pin selecting two types of threshold voltages Standby mode can be set by making standby pin high to reduce circuit current. Three-state output configuration. Both driver and receiver outputs go into high-impedance state in standby mode. ORDERING INFORMATION Part Number Package 28-pin plastic DIP (400 mil) 28-pin plastic DIP (400 mil) 28-pin plastic SOP (375 mil) 28-pin plastic SOP (375 mil) µPD4712CCY µPD4712DCY µPD4712CGT µPD4712DGT Document No. S10316EJ3V1DS00 (3rd edition) Date Published April 1997 N Printed in Japan © 1995 µPD4712C/4712D BLOCK DIAGRAM/PIN CONFIGURATION (Top View) +10 V + C3 C1 +5 V Bypass capasitor TTL/CMOS INPUT + 1 2 3 4 5 VDD + C1 DC-DC converter C4 + 28 + C4 GND 27 C4 – VCC – C1 + 26 C2 –10 V VSS 25 GND 300 Ω 300 Ω 300 Ω 24 STBY Standby...