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ADM3222

更新时间： 2024-09-28 22:39:03
品牌 Logo 应用领域
亚德诺 - ADI 驱动器
页数 文件大小 规格书
8页 155K
描述
Low Power, +3.3 V, RS-232 Line Drivers/Receivers

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ADM3222 数据手册

 浏览型号ADM3222的Datasheet PDF文件第2页浏览型号ADM3222的Datasheet PDF文件第3页浏览型号ADM3222的Datasheet PDF文件第4页浏览型号ADM3222的Datasheet PDF文件第5页浏览型号ADM3222的Datasheet PDF文件第6页浏览型号ADM3222的Datasheet PDF文件第7页 
Low Power, +3.3 V, RS-232  
Line Drivers/Receivers  
a
ADM3202/ADM3222/ADM1385  
FUNCTIONAL BLOCK DIAGRAMS  
FEATURES  
460 kbps Data Rate  
+3.3V INPUT  
Specified at +3.3 V  
+3.3V TO +6.6V  
VOLTAGE  
C1+  
C1–  
V
CC  
+
+
0.1ꢀF  
+
C3  
0.1ꢀF  
6.3V  
C5  
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  
10V  
+
+
V+  
DOUBLER  
0.1ꢀF  
+6.6V TO –6.6V  
VOLTAGE  
INVERTER  
C2+  
C2–  
V–  
0.1ꢀF  
10V  
C4  
0.1ꢀF  
10V  
T1  
T2  
T1  
T2  
T1  
IN  
OUT  
CMOS  
EIA/TIA-232  
OUTPUTS  
APPLICATIONS  
INPUTS  
T2  
General Purpose RS-232 Data Link  
Portable Instruments  
Printers  
Palmtop Computers  
PDAs  
IN  
OUT  
R1  
R2  
R1  
R2  
R1  
R2  
OUT  
OUT  
IN  
IN  
CMOS  
OUTPUTS  
EIA/TIA-232  
INPUTS*  
GND  
ADM3202  
*INTERNAL 5kꢁ PULL-DOWN RESISTOR  
ON EACH RS-232 INPUT  
+3.3V INPUT  
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.  
+3.3V TO +6.6V  
VOLTAGE  
C1+  
C1–  
V
CC  
+
+
0.1ꢀF  
+
C3  
0.1ꢀF  
6.3V  
C5  
10V  
+
+
V+  
DOUBLER  
0.1ꢀF  
+6.6V TO –6.6V  
VOLTAGE  
INVERTER  
C2+  
C2–  
V–  
0.1ꢀF  
10V  
C4  
0.1ꢀF  
10V  
Low power consumption and a shutdown facility (ADM3222/  
ADM1385) makes them ideal for battery powered portable  
instruments.  
T1  
T2  
T1  
T2  
T1  
IN  
OUT  
CMOS  
EIA/TIA-232  
OUTPUTS  
INPUTS  
The ADM3202/ADM3222/ADM1385 conforms to the EIA-  
232E and CCITT V.28 specifications and operates at data rates  
up to 460 kbps.  
T2  
IN  
OUT  
R1  
R2  
R1  
R2  
R1  
R2  
OUT  
OUT  
IN  
IN  
CMOS  
OUTPUTS  
EIA/TIA-232  
INPUTS*  
Four external 0.1 µF charge pump capacitors are used for the  
voltage doubler/inverter permitting operation from a single  
+3.3 V supply.  
ADM3222  
EN  
SD  
GND  
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.  
*INTERNAL 5kꢁ PULL-DOWN RESISTOR  
ON EACH RS-232 INPUT  
+3.3V INPUT  
+3.3V TO +6.6V  
VOLTAGE  
C1+  
C1–  
V
CC  
+
+
0.1ꢀF  
+
C5  
0.1ꢀF  
10V  
V+  
DOUBLER  
+
C3  
0.1ꢀF  
+6.6V TO –6.6V  
VOLTAGE  
INVERTER  
C2+  
C2–  
V–  
0.1ꢀF  
10V  
6.3V  
C4  
The ADM1385 contains a driver disable mode and a complete  
shutdown mode.  
+
0.1ꢀF  
10V  
T1  
T2  
T1  
T2  
T1  
IN  
OUT  
OUT  
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  
EIA/TIA-232  
OUTPUTS  
INPUTS  
T2  
IN  
R1  
R2  
R1  
R2  
R1  
R2  
OUT  
OUT  
IN  
IN  
CMOS  
OUTPUTS  
EIA/TIA-232  
INPUTS*  
ADM1385  
DD  
SD  
GND  
*INTERNAL 5kꢁ PULL-DOWN RESISTOR  
ON EACH RS-232 INPUT  
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.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 2000  
12345678

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