ADM3202AN

a FEATURES 460 kbps Data Rate Specified at +3.3 V Meets EIA-232E Specifications 0.1 F Charge Pump Capacitors Low Power Shutdown (ADM3222E and ADM1385) DIP, SO, SOIC, SSOP and TSSOP Package Options Upgrade for MAX3222/32 and LTC1385 APPLICATIONS General Purpose RS-232 Data Link Portable Instruments Printers Palmtop Computers PDAs Low Power, +3.3 V, RS-232 Line Drivers/Receivers ADM3202/ADM3222/ADM1385 FUNCTIONAL BLOCK DIAGRAMS +3.3V INPUT 0.1 F + 10V C1+ +3.3V TO +6.6V VOLTAGE DOUBLER C1– C2+ +6.6V TO –6.6V VOLTAGE C2– INVERTER VCC V+ V– C3 + 0.1 F 6.3V C4 + 0.1 F 10V + C5 0.1 F 0.1 F + 10V T1IN CMOS INPUTS T1 T1OUT EIA/TIA-232 OUTPUTS T2IN R1OUT CMOS OUTPUTS T2 T2OUT R1IN EIA/TIA-232 INPUTS* R1 R2OUT R2 R2IN GND ADM3202 *INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT GENERAL DESCRIPTION +3.3V INPUT 0.1 F + 10V The ADM3202/ADM3222/ADM1385 transceivers are high speed, 2-channel RS-232/V.28 interface devices which operate from a single +3.3 V power supply. Low power consumption and a shutdown facility (ADM3222/ ADM1385) makes them ideal for battery powered portable instruments. The ADM3202/ADM3222/ADM1385 conforms to the EIA232E and CCITT V.28 specifications and operates at data rates up to 460 kbps. 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 ADM3222 contains additional enable and shutdown circuitry. The EN input may be used to three-state the receiver outputs. The SD input is used to power down the charge pump and transmitter outputs reducing the quiescent current to less than 0.5 µA. The receivers remain enabled during shutdown unless disabled using EN. The ADM1385 contains a driver disable mode and a complete shutdown mode. The ADM3202 is available in a 16-lead DIP, narrow and wide SOIC as well as a space saving 20-lead TSSOP package. The ADM3222 is available in 18-lead DIP, SO and in 20-lead SSOP and TSSOP. The ADM1385 is available in a 20-lead SSOP package, which is pin compatible with the LTC1385 CG. CMOS INPUTS CMOS INPUTS C1+ +3.3V TO +6.6V VOLTAGE DOUBLER C1– C2+ +6.6V TO –6.6V VOLTAGE INVERTER C2– VCC V+ V– C3 + 0.1 F 6.3V C4 + 0.1 F 10V + C5 0.1 F 0.1 F + 10V T1IN T2IN R1OUT R2OUT EN T1 T1OUT EIA/TIA-232 OUTPUTS T2 T2OUT R1IN EIA/TIA-232 INPUTS* R1 CMOS OUTPUTS R2 R2IN ADM3222 GND SD *INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT +3.3V INPUT 0.1 F + 10V C1+ +3.3V TO +6.6V VOLTAGE C1– DOUBLER C2+ +6.6V TO –6.6V VOLTAGE C2– INVERTER VCC V+ + V– C4 + 0.1 F 10V + C5 0.1 F C3 0.1 F 6.3V 0.1 F + 10V T1IN T2IN R1OUT R2OUT T1 T1OUT EIA/TIA-232 OUTPUTS T2 T2OUT R1IN EIA/TIA-232 INPUTS* R1 CMOS OUTPUTS R2 R2IN DD ADM1385 GND SD *INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT R EV. A 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000 ADM3202/ADM3222/ADM1385–SPECIFICATIONS (VCC = +3.3 V Parameter DC CHARACTERISTICS Operating Voltage Range VCC Power Supply Current Shutdown Supply Current LOGIC Input Logic Threshold Low, VINL Input Logic Threshold High, VINH CMOS Output Voltage Low, VOL CMOS Output Voltage High, VOH Input Leakage Current Output Leakage Current RS-232 RECEIVER EIA-232 Input Voltage Range EIA-232 Input Threshold Low EIA-232 Input Threshold High EIA-232 Input Hysteresis EIA-232 Input Resistance RS-232 TRANSMITTER Output Voltage Swing (RS-232) Output Voltage Swing (RS-562) Transmitter Output Resistance RS-232 Output Short Circuit Current Output Leakage Current TIMING CHARACTERISTICS Maximum Data Rate Receiver Propagation Delay TPHL TPLH Transmitter Propagation Delay Receiver Output Enable Time Receiver Output Disable Time Transmitter Skew Receiver Skew Transition Region Slew Rate 0.3 V, C1–C4 = 0.1 F. All specifications TMIN to TMAX unless otherwise noted.) Min 3.0 Typ 3.3 1.3 8 0.01 Max 5.5 2.1 10 0.5 0.8 2.0 0.4 VCC – 0.6 0.01 ±1 ± 10 +30 1.2 1.6 0.4 5 ± 5.2 2.4 7 Unit V mA mA µA V V V V µA µA V V V V kΩ V V Ω mA µA kbps 0.4 0.4 300 200 200 30 300 1 1 750 µs µs ns ns ns ns ns V/µs V/µs VCC = 3.3 V. All Transmitter Outputs Loaded with 3 kΩ to Ground VCC = 3.0 V VCC = 0 V, VOUT = ± 2 V SD = Low, VOUT = 12 V VCC = 3.3 V, RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF. One Tx Switching RL = 3 kΩ, CL = 1000 pF Test Conditions/Comments No Load RL = 3 kΩ to GND TIN TIN IOUT = 1.6 mA IOUT = –1 mA TIN = GND to VCC* Receivers Disabled –30 0.6 3 ± 5.0 ± 3.7 300 ± 15 ± 25 460 6 4 *ADM1385: Input leakage current typically –10 µA when TIN = GND. Specifications subject to change without notice. 10 10 30 30 Measured from +3 V to –3 V or –3 V to +3 V, VCC = +3.3 V RL = 3 kΩ, CL = 1000 pF, TA = +25°C RL = 3 kΩ, CL = 2500 pF, TA = +25°C – 2– REV. A ADM3202/ADM3222/ADM1385 ABSOLUTE MAXIMUM RATINGS * (TA = +25 °C unless otherwise noted) ORDERING GUIDE VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . (VCC – 0.3 V) to +14 V V– . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –14 V Input Voltages TIN . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to (V+, +0.3 V) RIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 30 V Output Voltages TOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 15 V ROUT . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to (VCC + 0.3 V) Short Circuit Duration TOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous Power Dissipation Power Dissipation N-16 . . . . . . . . . . . . . . . . . . . . . 450 mW (Derate 6 mW/°C above +50°C) θJA, Thermal Impedance . . . . . . . . . . . . . . . . . . . 117°C/W Power Dissipation R-16 . . . . . . . . . . . . . . . . . . . . . 450 mW (Derate 6 mW/°C above +50°C) θJA, Thermal Impedance . . . . . . . . . . . . . . . . . . . 158°C/W Power Dissipation RU-16 . . . . . . . . . . . . . . . . . . . 500 mW (Derate 6 mW/°C above +50°C) θJA, Thermal Impedance . . . . . . . . . . . . . . . . . . . 158°C/W Power Dissipation R-18 . . . . . . . . . . . . . . . . . . . . . 450 mW (Derate 6 mW/°C above +50°C) θJA, Thermal Impedance . . . . . . . . . . . . . . . . . . . 158°C/W Power Dissipation RS-20 . . . . . . . . . . . . . . . . . . . . 450 mW (Derate 6 mW/°C above +50°C) θJA, Thermal Impedance . . . . . . . . . . . . . . . . . . . 158°C/W Power Dissipation RU-20 . . . . . . . . . . . . . . . . . . . 450 mW (Derate 6 mW/°C above +50°C) θJA, Thermal Impedance . . . . . . . . . . . . . . . . . . . 158°C/W Operating Temperature Range Industrial (A Version) . . . . . . . . . . . . . . . . –40°C to +85°C Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . +300°C ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .