ADM203

OBSOLETE a FEATURES 120 kB Transmission Rate ADM202: Small (0.1 ␮F) Charge Pump Capacitors ADM203: No External Capacitors Required Single 5 V Power Supply Meets EIA-232-E and V.28 Specifications Two Drivers and Two Receivers On-Board DC-DC Converters ؎9 V Output Swing with 5 V Supply Low Power BiCMOS: 2.0 mA ICC ؎30 V Receiver Input Levels APPLICATIONS Computers Peripherals Modems Printers Instruments High-Speed, 5 V, 0.1 ␮F CMOS RS-232 Driver/Receivers ADM203 FUNCTIONAL BLOCK DIAGRAMS 5V INPUT 0.1␮F 6.3V 0.1␮F 16V TTL/CMOS INPUTS* T1IN T2IN TTL/CMOS OUTPUTS R1OUT R2OUT C1+ +5V TO +10V VCC VOLTAGE C1– DOUBLER V+ C2+ +10V TO –10V VOLTAGE C2– INVERTER V– T1 T2 R1 R2 GND ADM202 0.1␮F 6.3V 0.1␮F 6.3V 0.1␮F 16V T1OUT T2OUT RS-232 OUTPUTS R1IN R2IN RS-232 INPUTS** GENERAL DESCRIPTION The ADM202/ADM203 is a two-channel RS-232 line driver/ receiver pair designed to operate from a single 5 V power supply. A highly efficient on-chip charge pump...