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ADM202JRW Datasheet(PDF) 1 Page - Analog Devices |
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ADM202JRW Datasheet(HTML) 1 Page - Analog Devices |
1 / 6 page FUNCTIONAL BLOCK DIAGRAMS 0.1µF 6.3V 0.1µF 6.3V 0.1µF 16V 0.1µF 6.3V +5V TO +10V VOLTAGE DOUBLER +10V TO –10V VOLTAGE INVERTER 0.1µF 16V +5V INPUT VCC V+ V– C1+ C1– C2+ C2– ADM202 6 GND 15 4 5 3 1 2 T1IN RS-232 OUTPUTS TTL/CMOS INPUTS * T1OUT T2IN R1OUT R2OUT T2OUT R1IN R2IN R1 R2 T2 T1 TTL/CMOS OUTPUTS RS-232 INPUTS ** 13 10 7 11 8 14 9 12 16 *INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT **INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT +5V INPUT VCC V+ V– C1+ C1– C2+ C2– GND ADM203 7 T1IN RS-232 OUTPUTS TTL/CMOS INPUTS * T1OUT T2IN R1OUT R2OUT T2OUT R1IN R2IN R1 R2 T2 T1 TTL/CMOS OUTPUTS RS-232 INPUTS ** 4 1 18 2 19 5 20 3 8 13 12 17 14 11 15 10 16 V– C2– C2+ 9 6 GND DO NOT MAKE CONNECTIONS TO THESE PINS INTERNAL –10V POWER SUPPLY INTERNAL +10V POWER SUPPLY REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a High Speed, +5 V, 0.1 F CMOS RS-232 Driver/Receivers ADM202/ADM203 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 GENERAL DESCRIPTION The ADM202/ADM203 is a two-channel RS-232 line driver/ receiver pair designed to operate from a single +5 V power sup- ply. A highly efficient on-chip charge pump design permits RS-232 levels to be developed using charge pump capacitors as small as 0.1 µF. The capacitors are internal to the package on the ADM203 so no external capacitors are required. These con- verters generate ±10 V RS-232 output levels. The ADM202/ADM203 meets or exceeds the EIA-232-E and V.28 specifications. Fast driver slew rates permit operation up to 120 kB while high drive currents allows for extended cable lengths. An epitaxial BiCMOS construction minimizes power consump- tion to 10 mW and also guards against latch-up. Overvoltage protection is provided allowing the receiver inputs to withstand continuous voltages in excess of ±30 V. In addition, all pins contain ESD protection to levels greater than 2 kV. The ADM202 is available in 16-lead DIP and both narrow and wide SOIC packages. The ADM203 is available in a 20-pin DIP package. 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 |
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