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ADM561

更新时间： 2024-11-01 22:39:03
品牌 Logo 应用领域
亚德诺 - ADI 驱动器电脑PC
页数 文件大小 规格书
6页 249K
描述
Ultralow Power, +3.3 V, RS-232 Notebook PC Serial Port Drivers/Receivers

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ADM561 数据手册

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Ultralow Power, +3.3 V, RS-232  
Notebook PC Serial Port Drivers/Receivers  
a
ADM560/ADM561  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
RS-232 Compatible  
+3.3V INPUT  
Operates with 3 V or 5 V Logic  
Ultralow Power CMOS: 1.3 mA Operation  
Low Power Shutdown: 0.2 µA  
Suitable for Serial Port Mice  
116 kbits/s Data Rate  
1 µF Charge Pump Capacitors  
Single +3 V to +3.6 V Power Supply  
Two Receivers Active in Shutdown (ADM560)  
11  
13  
12  
14  
+3.3V TO +6.6V  
VOLTAGE  
V
CC  
C1+  
C1–  
1µF  
10V  
1µF  
6.3V  
0.1µF  
DOUBLER  
V+  
C2+  
C2–  
15  
16  
+6.6V TO –6.6V  
VOLTAGE  
INVERTER  
V– 17  
1µF  
10V  
1µF  
10V  
T1  
T2  
T1  
T2  
T3  
T4  
R1  
2
3
T1  
7
6
IN  
IN  
IN  
IN  
OUT  
OUT  
OUT  
OUT  
T2  
T3  
T4  
APPLICATIONS  
Laptop Computers  
Palmtop Computers  
Notebook Computers  
Peripherals  
Modems  
Printers  
Battery Operated Equipment  
CMOS  
INPUTS  
EIA/TIA-232  
OUTPUTS  
1
T3  
20  
21  
8
28  
9
T4  
R1  
R1  
R2  
OUT  
OUT  
IN  
IN  
R2  
R3  
R4  
4
5
R2  
R3  
CMOS  
OUTPUTS  
EIA/TIA-232  
INPUTS  
26  
22  
27  
23  
R3  
R4  
OUT  
OUT  
IN  
IN  
GENERAL DESCRIPTION  
R4  
The ADM560/ADM561 are four driver/five receiver interface  
devices designed to meet the EIA-232 standard while operating  
with a single +3.3 V power supply. The devices feature an on-  
board dc-to-dc converter, eliminating the need for dual ±5 V  
power supplies. This dc-dc converter contains a voltage doubler  
and voltage inverter which internally generates ±6.6 V from the  
input +3.3 V power supply.  
R5  
19  
24  
18  
R5  
R5  
IN  
OUT  
ADM560  
ADM561  
EN (ADM560)  
EN (ADM561)  
25  
SHDN (ADM561)  
SHDN (ADM560)  
GND  
10  
The ADM560 and ADM561 consume only 5 mW making  
them ideally suited for battery and other power-sensitive appli-  
cations. A shutdown facility is also provided which reduces the  
power to 0.66 µW.  
can withstand up to ±25 V levels. The transmitter inputs can be  
driven from either 3 V or 5 V logic levels. This allows operation  
in mixed 3 V/5 V power supply systems.  
The ADM560/ADM561 is packaged in a 28-pin SO and a  
28-pin SSOP package.  
The ADM560 contains active low shutdown and active high  
receiver enable signals. In shutdown mode, two receivers remain  
active thereby allowing monitoring of peripheral devices. This  
feature allows the device to be shut down until a peripheral  
device begins communication. The active receivers can alert the  
processor which can then take the ADM560 out of the shut-  
down mode.  
ORDERING GUIDE  
Model  
Temperature Range  
Package Option  
ADM560JR  
ADM560JRS  
0°C to +70°C  
0°C to +70°C  
R-28  
RS-28  
The ADM561 features active high shutdown and an active  
low receiver enable. In this device all receivers are disabled in  
shutdown.  
ADM561JR  
ADM561JRS  
0°C to +70°C  
0°C to +70°C  
R-28  
RS-28  
The ADM560/ADM561 is fabricated using CMOS technology  
for minimal power consumption. It features a high level of over-  
voltage protection and latch-up immunity. The receiver inputs  
REV. 0  
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: 617/329-4700 Fax: 617/326-8703  
123456

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