EMI/EMC-Compliant, 15 kV, ESD-Protected RS-232 Line Drivers/Receivers ADM202E/ADM1181A FEATURES FUNCTIONAL BLOCK DIAGRAMS 5V INPUT Complies with 89/336/EEC EMC directive +5V TO +10V C1+ V 0.1 F CC ESD protection to IEC1000-4-2 (801.2) C3 VOLTAGE C5 10V V+ C1 0.1F DOUBLER 0.1 F 8 kV: contact discharge 6.3V +10V TO 10V V C2+ 15 kV: air-gap discharge 0.1 F C4 VOLTAGE 10V 0.1 F C2 15 kV: human body model INVERTER 10V EFT fast transient/burst immunity (IEC1000-4-4) T1 T1 T1 IN OUT EIA/TIA-232 Low EMI emissions (EN55022) CMOS OUTPUTS INPUTS T2 T2 T2 230 kbits/s data rate guaranteed IN OUT TSSOP package option R1 R1 R1 IN OUT Upgrade for MAX202E, 232E, LT1181A CMOS EIA/TIA-232 OUTPUTS INPUTS* R2 R2 R2 OUT IN APPLICATIONS General-purpose RS-232 data link ADM202E GND Portable instruments PDAs *INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT Figure 1. 5V INPUT +5V TO +10V V C1+ 0.1 F CC C5 VOLTAGE 10V C1 V+ 0.1 F DOUBLER C3 10V 0.1F +10V TO 10V 0.1 F C2+ V C4 10V VOLTAGE 10V 0.1 F C2 INVERTER 10V T1 T1 T1 IN OUT CMOS EIA/TIA-232 GENERAL DESCRIPTION INPUTS OUTPUTS T2 T2 T2 IN OUT The ADM202E and ADM1181A are robust, high speed, 2-channel RS-232/V.28 interface devices that operate from a R1 R1 R1 OUT IN EIA/TIA-232 CMOS single 5 V power supply. Both products are suitable for operation OUTPUTS INPUTS* R2 R2 R2 OUT IN in harsh electrical environments and are compliant with the EU directive on EMC (89/336/EEC). Both the level of electromagnetic ADM1181A GND emissions and immunity are in compliance. EM immunity includes ESD protection in excess of 15 kV on all I/O lines, *INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT fast transient/burst protection (1000-4-4), and radiated immunity (1000-4-3). EM emissions include radiated and Figure 2. conducted emissions as required by Information Technology The ADM202E provides a robust pin-compatible upgrade for Equipment EN55022, CISPR22. existing ADM202, ADM232L, or MAX202E/MAX232E sockets. The ADM202E and ADM1181A conform to the EIA-232E It is available in a 16-lead PDIP, a wide SOIC, a narrow SOIC, and CCITT V.28 specifications and operate at data rates up and a space-saving TSSOP package that is 44% smaller than the to 230 kbps. SOIC package. Four external 0.1 F charge-pump capacitors are used for the The ADM1181A provides a robust pin-compatible upgrade for voltage doubler/inverter, permitting operation from a single the LTC1181A, and it is available in a 16-lead PDIP package 5 V supply. and a wide 16-lead SOIC package. Rev. C 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 that may result from its use. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Specifications subject to change without notice. No license is granted by implication Tel: 781.329.4700 www.analog.com or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Fax: 781.326.8703 2005 Analog Devices, Inc. All rights reserved. 00066-002 00066-001ADM202E/ADM1181A TABLE OF CONTENTS Specifications..................................................................................... 3 Typical Performance Characteristics ..............................................8 Absolute Maximum Ratings............................................................ 4 ESD Testing (IEC1000-4-2) ...................................................... 10 ESD Caution.................................................................................. 4 Fast Transient/Burst Testing (IEC1000-4-4)........................... 11 Pin Configuration and Function Descriptions............................. 5 IEC1000-4-3 Radiated Immunity ............................................ 12 General Description ......................................................................... 6 Emissions/Interference.............................................................. 12 Circuit Description....................................................................... 6 Conducted Emissions ................................................................ 12 Charge-Pump DC-to-DC Voltage Converter....................... 6 Radiated Emissions .................................................................... 13 Transmitter (Driver) Section .................................................. 6 Outline Dimensions ....................................................................... 14 Receiver Section ....................................................................... 6 Ordering Guide .......................................................................... 15 High Baud Rate............................................................................. 6 ESD/EFT Transient Protection Scheme .................................... 7 REVISION HISTORY 2/05Rev. B to Rev. C. Updated Format..................................................................Universal Changed Hysteresis Level..................................................Universal Change to Specifications.................................................................. 3 Added ESD Caution ......................................................................... 4 Change to Receiver Section............................................................. 6 Updated Outline Dimensions ....................................................... 14 Changes to Ordering Guide .......................................................... 15 2/01Rev. A to Rev. B. Deletion of one ESD Rating in ABSOLUTE MAXIMUM RATINGS............................................. 4 Removal of one column in Table II ................................................ 8 Rev. C Page 2 of 16