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ADM231LJN Datasheet(PDF) 1 Page - Analog Devices |
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ADM231LJN Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page 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 +5 V Powered CMOS RS-232 Drivers/Receivers ADM223/ADM230L–ADM241L One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 World Wide Web Site: http://www.analog.com Fax: 617/326-8703 © Analog Devices, Inc., 1997 ADM232L TYPICAL OPERATING CIRCUIT Table I. Selection Table No. of No. of Low Power TTL Part Power RS-232 RS-232 External Shutdown Three-State No. of Number Supply Voltage Drivers Receivers Capacitors (SD) EN Pins ADM223 +5 V 4 5 4 Yes ( SD) Yes (EN) 28 ADM230L +5 V 5 0 4 Yes No 20 ADM231L +5 V & +7.5 V to +13.2 V 2 2 2 No No 14 ADM232L +5 V 2 2 4 No No 16 ADM233L +5 V 2 2 None No No 20 ADM234L +5 V 4 0 4 No No 16 ADM235L +5 V 5 5 None Yes Yes 24 ADM236L +5 V 4 3 4 Yes Yes 24 ADM237L +5 V 5 3 4 No No 24 ADM238L +5 V 4 4 4 No No 24 ADM239L +5 V & +7.5 V to +13.2 V 3 5 2 No Yes 24 ADM241L +5 V 4 5 4 Yes Yes 28 FEATURES Single 5 V Power Supply Meets All EIA-232-E and V.28 Specifications 120 kB/s Data Rate On-Board DC-DC Converters 9 V Output Swing with +5 V Supply Small 1 F Capacitors Low Power Shutdown ≤1 A Receivers Active in Shutdown (ADM223) ESD > 2 kV 30 V Receiver Input Levels Latch-Up FREE Plug-In Upgrade for MAX223/230-241 Plug-In Upgrade for AD230–AD241 APPLICATIONS Computers Peripherals Modems Printers Instruments GENERAL DESCRIPTION The ADM2xx family of line drivers/receivers is intended for all EIA-232-E and V.28 communications interfaces, especially in applications where ±12 V is not available. The ADM223, ADM230L, ADM235L, ADM236L and ADM241L feature a low power shutdown mode that reduces power dissipation to less than 5 µW, making them ideally suited for battery powered equipment. Two receivers remain enabled during shutdown on the ADM223. The ADM233L and ADM235L do not require any external components and are particularly useful in applica- tions where printed circuit board space is critical. All members of the ADM230L family, except the ADM231L and the ADM239L, include two internal charge pump voltage converters that allow operation from a single +5 V supply. These converters convert the +5 V input power to the ±10 V required for RS-232 output levels. The ADM231L and ADM239L are designed to operate from +5 V and +12 V sup- plies. An internal +12 V to –12 V charge pump voltage con- verter generates the –12 V supply. The ADM2xxL is an enhanced upgrade for the AD2xx family featuring lower power consumption, faster slew rate and opera- tion with smaller (1 µF) capacitors. *INTERNAL 400k Ω PULL-UP RESISTOR ON EACH TTL/CMOS INPUT **INTERNAL 5k Ω PULL-DOWN RESISTOR ON EACH RS-232 INPUT +5V TO +10V VOLTAGE DOUBLER +10V TO –10V VOLTAGE INVERTER 1 µF 16V 1 µF 6.3V +5V INPUT VCC V+ V– C1+ C1– C2+ C2– ADM232L 1 µF 6.3V 1 µF 16V 6 GND 15 4 5 3 1 2 1 µF 6.3V 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 |
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