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ADM3222AN датащи(PDF) 1 Page - Analog Devices |
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ADM3222AN датащи(HTML) 1 Page - Analog Devices |
1 / 8 page REV. 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. a ADM3202/ADM3222/ADM1385 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 Low Power, +3.3 V, RS-232 Line Drivers/Receivers FUNCTIONAL BLOCK DIAGRAMS 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 GENERAL DESCRIPTION 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 EIA- 232E 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 cir- cuitry. 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. +3.3V TO +6.6V VOLTAGE DOUBLER C1+ C1– C5 0.1 F + VCC V+ 0.1 F 10V + + C3 0.1 F 6.3V +3.3V INPUT +6.6V TO –6.6V VOLTAGE INVERTER C2+ C2– + V– 0.1 F 10V + C4 0.1 F 10V T1OUT T1IN T2OUT T2IN EIA/TIA-232 OUTPUTS R1OUT R2OUT R1IN R2IN EIA/TIA-232 INPUTS* CMOS INPUTS CMOS OUTPUTS ADM3202 GND *INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT +3.3V TO +6.6V VOLTAGE DOUBLER C1+ C1– C5 0.1 F + VCC V+ 0.1 F 10V + + C3 0.1 F 6.3V +3.3V INPUT +6.6V TO –6.6V VOLTAGE INVERTER C2+ C2– + V– 0.1 F 10V + C4 0.1 F 10V T1OUT T1IN T2OUT T2IN EIA/TIA-232 OUTPUTS R1OUT R2OUT R1IN R2IN EIA/TIA-232 INPUTS* CMOS INPUTS CMOS OUTPUTS ADM3222 GND *INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT T1 T2 R2 R1 T1 T2 R2 R1 EN SD +3.3V TO +6.6V VOLTAGE DOUBLER C1+ C1– C5 0.1 F + VCC V+ 0.1 F 10V + C3 0.1 F 6.3V +3.3V INPUT +6.6V TO –6.6V VOLTAGE INVERTER C2+ C2– + V– 0.1 F 10V + C4 0.1 F 10V T1OUT T1IN T2OUT T2IN EIA/TIA-232 OUTPUTS R1OUT R2OUT R1IN R2IN EIA/TIA-232 INPUTS* CMOS INPUTS CMOS OUTPUTS ADM1385 GND *INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT T1 T2 R2 R1 DD SD + |
Аналогичный номер детали - ADM3222AN |
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Аналогичное описание - ADM3222AN |
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