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ADM3311EARU-REEL25 Fiches technique(PDF) 1 Page - Analog Devices |
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ADM3311EARU-REEL25 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 12 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 ADM3311E* 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 15 kV ESD Protected, +2.7 V to +3.6 V Serial Port Transceiver with Green Idle™ FUNCTIONAL BLOCK DIAGRAM C1+ C1– C2+ C2– C4 0.1 F C2 0.1 F V+ V– C5 0.1 F T1 7 T1OUT T1IN T2OUT T2IN 20 T3OUT T3IN 8 9 18 19 22 ADM3311E R1OUT R2OUT R3OUT R4OUT R5OUT R1IN R2IN R3IN R4IN R5IN CMOS INPUTS* CMOS OUTPUTS EIA/TIA-232 OUTPUTS EIA/TIA-232 INPUTS ** 10 NOTES: * INTERNAL 400k PULL-UP RESISTOR ON EACH CMOS INPUT ** INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT 21 17 16 15 14 13 12 11 EN SD VCC VCC C3– GND C3+ 2 4 1 3 6 5 ENABLE INPUT VOLTAGE TRIPLER/ INVERTER +3V TO 9V C1 0.1 F C3 0.1 F 28 27 26 25 24 SHUTDOWN INPUT 23 0.1 F CERAMIC 1 F T2 T3 R1 R2 R3 R4 R5 FEATURES Green Idle Power Saving Mode Full RS-232 Compliance Operates with 3 V Logic Low EMI Ultralow Power CMOS: 450 A Operation Low Power Shutdown: 20 nA 460 kbits/s Data Rate 0.1 F to 1 F Charge Pump Capacitors Single +2.7 V to +3.6 V Power Supply One Receiver Active in Shutdown ESD >15 kV Pin Compatible with DS14C335 APPLICATIONS Laptop Computers Notebook Computers Printers Peripherals Modems GENERAL DESCRIPTION The ADM3311E is a three driver/five receiver product designed to fully meet the EIA-232 standard while operating with a single +2.7 V to +3.6 V power supply. The device features an on-board, charge pump, dc-to-dc converter, eliminating the need for dual power supplies. This dc-to-dc converter contains a voltage tri- pler and voltage inverter, which internally generates positive and negative supplies from the input +3 V power supply. The dc- to-dc converter operates in Green Idle Mode, whereby the charge pump oscillator is gated on and off to maintain the out- put voltage at ±7.25 V under varying load conditions. This minimizes the power consumption and makes these products ideal for battery powered portable devices. The ADM3311E is suitable for operation in harsh electrical environments and contains ESD protection up to ±15 kV on all I-O lines. The ADM3311E contains three drivers and five receivers and is intended for serial port applications on notebook/laptop computers. A shutdown facility is also provided that reduces the power consumption to 3 µW. While in shutdown, one receiver remains active, thereby allowing monitoring of peripheral devices. This feature allows the device to be shut down until a peripheral device begins communication. The active receiver can alert the processor, which can then take the ADM3311E out of the shutdown mode. The ADM3311E is fabricated using CMOS technology for minimal power consumption. It features a high level of over- voltage protection and latch-up immunity. The ADM3311E is packaged in a 28-lead SSOP/TSSOP package. *Protected by Patent No. 5,606,491. Green Idle is a trademark of Analog Devices, Inc. |
Numéro de pièce similaire - ADM3311EARU-REEL25 |
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Description similaire - ADM3311EARU-REEL25 |
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