EMI-/EMC-Compliant 615 kV ESD Protected, a Dual RS-232 Port with Standby ADM2209E FEATURES FUNCTIONAL BLOCK DIAGRAM Two Complete Serial Ports, Six Drivers and Ten Receivers Operates with 3 V or 5 V Logic STBY V DD 3.3V/5V +12V Low Power CMOS: <5 mA Operation 0.1mF 0.1mF Low Standby Current: 100 mA V C+ 460 kbit/s Data Rate Guaranteed Laplink -Compatible CHARGE PUMP 0.1mF 0.1mF VOLTAGE INVERTER 0.1 mF Charge Pump Capacitors GND C Single +12 V Power Supply +3.3 V/+5 V Standby Supply T1AT1 A T1 IN OUT One Receiver on Each Port Active in Standby CMOS EIA/TIA-232 T2 A T2 Complies with 89/336/EEC EMC Directive T2 A OUT IN INPUTS OUTPUTS ESD Protection to IEC1000-4-2 (801.2) T3 T3 A T3 A IN OUT 68 kV: Contact Discharge 615 kV: Air-Gap Discharge R1 R1AR1 A OUT IN 615 kV: Human Body Model Electrical Fast Transient (EFT) Immunity (IEC1000-4-4) R2 A R2 A OUT R2 IN Low EMI Emissions (EN55022) CMOS EIA/TIA-232 Eliminates Costly TransZorbs R3 A R3 R3 A OUT IN OUTPUTS INPUTS Conforms to EIA/TIA-232-E Specifications R4 A R4 A R4 OUT IN Fail-Safe Receiver Outputs APPLICATIONS R5 A OUT R5 R5 A IN Personal Computers ADM2209E Printers T1 T1 B T1 B Peripherals IN OUT Modems CMOS EIA/TIA-232 T2 B T2 B T2 OUT INPUTS IN OUTPUTS GENERAL DESCRIPTION T3 B T3 T3 B IN OUT The ADM2209E is a complete, dual RS-232 port on a single R1 B chip, containing six drivers and ten receivers and fully meeting R1 B R1 IN OUT EIA-232 and V.28 specifications. The device features an on- R2 B R2 R2 B OUT IN board dc-to-dc converter to generate a 12 V power rail, elimi- nating the need for a negative power supply. CMOS EIA/TIA-232 R3 B R3 OUT R3 B IN OUTPUTS INPUTS The ADM2209E is suitable for operation in harsh electrical R4 B R4 environments and is compliant with the EU directive on EMC R4 B OUT IN (89/336/EEC). Both the level of emissions and immunity are in R5 B R5 R5 B OUT IN compliance. EM immunity includes ESD protection in excess of 15 kV on all I-O lines (1000-4-2), Electrical Fast Transient protection (1000-4-4) and Radiated Immunity (1000-4-3). EM In standby mode, one receiver on each port (R5) remains active emissions include radiated and conducted emissions as required to allow monitoring of peripheral devices while the rest of the by Information Technology Equipment EN55022, CISPR22. system is in power-saving mode. This feature allows the The ADM2209E conforms to the EIA-232E and CCITT V.28 ADM2209E to wake up the system when a peripheral device specifications and operates at data rates up to 460 kbps. begins communication. The ADM2209E is available in a 38-lead TSSOP package. Laplink is a registered trademark of Traveling Software, Inc. TransZorb is a registered trademark of General Semiconductor Industries, Inc. REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. 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 Tel: 781/329-4700 World Wide Web Site: (V = 10.8 V to 13.2 V, V = 3.3 V 6 5% or 5 V 6 10%, C1 = C2 = 0.1 mF. All DD STBY specifications T to T unless otherwise noted.) ADM2209ESPECIFICATIONS MIN MAX 1 Parameter Min Typ Max Units Test Conditions/Comments OPERATING CONDITIONS Operating Voltage Range, V +10.8 +12 +13.2 V DD +3.15 +5.5 V Standby Voltage Range, V STBY 2 V Power Supply Current 5 mA No Load, All Driver Inputs at 0.8 V or 2 V, DD All Receiver Inputs at +15 V or 15 V V Supply Current 100 200 m A No Load, All Tx IN at V or Open STBY STBY TRANSMITTER (DRIVER) CMOS INPUTS Input Pull-Up Current 10 25 m A Transmitter Input at GND High Level Input Voltage, V 2.1 V INH Low Level Input Voltage, V 0.4 V INL TRANSMITTER (DRIVER) EIA-232 OUTPUTS Output Voltage Swing 5.0 9.0 V All Transmitter Outputs Loaded with 3 kW to GND 3 Output Short-Circuit Current, I 5 15 30 mA V = 0 V, V = 0.8 V OS O IN Output Resistance 300 W V = 0 V, V = 0 V, V = 2 V DD STBY IN RECEIVER EIA-232 INPUTS Input Voltage Range 15 +15 V 0.4 1.45 V Input Low Threshold, V TL 1.7 2.4 V Input High Threshold, V TH Input Hysteresis 0.25 V Input Resistance, R 35 7 kW V = 15 V IN IN 4 RECEIVER OUTPUTS High Level Output Voltage, V 2.4 V I = 40 m A OH OH Low Level Output Voltage, V 0.2 0.4 V I = +1.6 mA OL OL Output Leakage Current (Except R5A, R5B) 0.05 5 mAV = 0 V DD 5 DRIVER SWITCHING CHARACTERISTICS Maximum Data Rate 460 kbps R = 3 kW to 7 kW , C = 50 pF to 470 pF L L = 3 kW to 7 kW , C = 50 pF to 1000 pF, 460 kbps R L L = 0 C to +85 C, 5 V 10% Only T A 920 kbps R = 3 kW to 7 kW , C = 50 pF to 470 pF, L L V = 5 V 5%, V = 12 V 5% STBY DD 1 msR = 3 kW , C = 1000 pF (Figures 1 and 2) Propagation Delay, High to Low, T PHL L L 1 msR = 3 kW , C = 1000 pF (Figures 1 and 2) Propagation Delay, Low to High, T PLH L L = 3 kW to 7 kW , C = 50 pF to 470 pF Transition Region Slew Rate 6 16 V/msR L L Transition Region Slew Rate (5 V) 4 16 V/msR = 3 kW to 7 kW , C = 50 pF to 1000 pF, L L V = 5 V 10% Only. Measured from +3 V STBY to 3 V or Vice Versa RECEIVER SWITCHING CHARACTERISTICS Maximum Data Rate 920 kbps C = 150 pF, V = 5 V 5% Only L STBY = 150 pF 460 kbps C L = 150 pF Propagation Delay, R1R4 0.4 0.75 msC L Propagation Delay, R5 1 2 msC = 150 pF L Output Rise Time, t 30 ns Figures 3 and 4 r Output Fall Time, t 30 ns f ESD AND EMC ESD Protection (I-O Pins) 15 kV Human Body Model 15 kV IEC1000-4-2 Air Discharge 8 kV IEC1000-4-2 Contact Discharge ESD Protection (All Other Pins) 2.5 kV Human Body Model, MIL-STD-883B EFT Protection (I-O Pins) 2 kV IEC1000-4-4 EMI Immunity 10 V/m IEC1000-4-3 NOTES 1 All typicals are given for V = +12 V, V = 5 V, T = +25 C. DD STBY A 2 Current into device pins is defined as positive. Current out-of-device pins is defined as negative. All voltages are referred to ground unless otherwise specified. For current, minimum and maximum values are specified as an absolute value and the sign is used to indicate direction. For voltage logic levels, the more positive value is designated as maximum. For example, if 6 V is a maximum, the typical value (6.8 V) is more negative. 3 Only one driver output shorted at a time. 4 If receiver inputs are unconnected, receiver output is a logic high. 5 Refer to typical curves. Driver output slew rate is measured from the +3.0 V to the 3.0 V level on the output waveform. Slew rate is determined by load capacitance. Specifications subject to change without notice. 2 REV. 0