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ADM3232EARUZ-REEL7 Datasheet(PDF) 1 Page - Analog Devices |
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ADM3232EARUZ-REEL7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 12 page ±15 kV ESD Protected, 3.3 V, RS-232 Line Driver/Receiver ADM3232E Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006–2011 Analog Devices, Inc. All rights reserved. FEATURES Data rate: 460 kbps 2 Tx and 2 Rx Meets EIA-232E specifications 0.1 μF charge pump capacitors ESD protection to IEC 1000-4-2 (801.2) on RS-232 I/Os Contact discharge: ±8 kV Air gap discharge: ±15 kV APPLICATIONS General-purpose RS-232 data link Portable instruments Handsets Industrial/telecom diagnostic ports FUNCTIONAL BLOCK DIAGRAM C1+ C2+ C1– C2– VCC V– V+ T1IN T1OUT T2IN T2OUT R1OUT R1IN R2OUT R2IN TTL/CMOS INPUTS RS-232 OUTPUTS TTL/CMOS OUTPUTS RS-232 INPUTS* T1 T2 R1 R2 + + C1 0.1µF 10V C2 0.1µF 10V GND ADM3232E C3 0.1µF 6.3V +3.3V INPUT +3.3V TO +6.6V VOLTAGE DOUBLER +6.6V TO –6.6V VOLTAGE INVERTER C5 0.1µF C4 0.1µF 10V *INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT. 5kΩ 5kΩ Figure 1. GENERAL DESCRIPTION The ADM3232E transceiver is a high speed, 2-channel RS-232/V.28 interface device that operates from a single 3.3 V power supply. Low power consumption makes it ideal for battery-powered portable instruments. The ADM3232E conforms to the EIA-232E and ITU-T V.28 specifications and operates at data rates up to 460 kbps. All RS-232 (TxOUT and RxIN) inputs and outputs are protected against electrostatic discharges (up to ±15 kV ESD protection). This ensures compliance with IEC 1000-4-2 requirements. This device is ideally suited for operation in electrically harsh environments or where RS-232 cables are frequently plugged/ unplugged, with the ±15 kV ESD protection of the ADM3232E RS-232 input/output pins. Emissions are also controlled to within very strict limits. CMOS technology is used to keep the power dissipation to an absolute minimum, allowing maximum battery life in portable applications. Four external 0.1 μF charge pump capacitors are used for the voltage doubler/inverter, permitting operation from a single 3.3 V supply. The ADM3232E is available in a 16-lead narrow and wide SOIC packages, as well as a space-saving 16-lead TSSOP. |
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