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ADM207E_15

更新时间： 2024-11-21 01:12:39
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RS-232 Line Drivers/Receivers

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ADM207E_15 数据手册

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EMI/EMC-Compliant, ± ±1 ꢀk EꢁSD­Potꢂetꢂꢃ,  
Rꢁ-232 Linꢂ SPivꢂPs/RꢂeꢂivꢂPs  
ASM206E/ASM207E/ASM208E/ASM2±±E/ASM2±3E  
FEATURES  
CONNECTION DIAGRAM  
5V INPUT  
Complies with 89/336/EEC EMC directive  
ESD protection to IEC 1000-4-2 (801-2)  
Contact discharge: 8 kV  
12  
14  
V
CC  
C1+  
C1–  
11  
13  
+5V TO+10V  
VOLTAGE  
DOUBLER  
+
+
+
0.1µF  
10V  
0.1µF  
6.3V  
0.1µF  
+
+
V+  
V–  
Air-gap discharge: 1ꢀ kV  
+10V TO –10V  
VOLTAGE  
INVERTER  
15 C2+  
17  
0.1µF  
10V  
0.1µF  
10V  
Human body model: 1ꢀ kV  
16  
C2–  
EFT/burst immunity (IEC 1000-4-4)  
Low EMI emissions (EN ꢀꢀ022)  
Eliminates need for TransZorb® suppressors  
230 kbps data rate guaranteed  
Single ꢀ V power supply  
Shutdown mode 1 μW  
Plug-in upgrade for MAX2xxE  
Space saving TSSOP package available  
T1  
IN  
T1  
T2  
T3  
T4  
R1  
R2  
R3  
R4  
R5  
2
3
T1  
7
6
OUT  
T2  
IN  
T2  
OUT  
TTL/CMOS  
RS-232  
1
INPUTS  
OUTPUTS  
T3  
IN  
T3  
20  
21  
8
1
28  
9
OUT  
T4  
IN  
T4  
OUT  
R1  
R1  
IN  
OUT  
OUT  
OUT  
OUT  
OUT  
APPLICATIONS  
Laptop computers  
Notebook computers  
Printers  
Peripherals  
Modems  
R2  
R3  
R4  
R5  
4
R2  
IN  
5
TTL/CMOS  
OUTPUTS  
RS-232  
27  
23  
26  
22  
19  
24  
R3  
IN  
2
INPUTS  
R4  
IN  
18  
25  
R5  
IN  
GENERAL DESCRIPTION  
SHDN (ADM211E)  
SHDN (ADM213E)  
EN (ADM211E)  
EN (ADM213E)  
ADM211E/  
ADM213E  
GND  
10  
The ADM2xxE is a family of robust RS-232 and V.28 interface  
devices that operate from a single 5 V power supply. These pro-  
ducts are suitable for operation in harsh electrical environments  
and are compliant with the EU directive on electromagnetic  
compatibility (EMC) (89/336/EEC). The level of emissions and  
immunity are both in compliance. EM immunity includes ESD  
protection in excess of ±±5 kV on all I/O lines (IEC ±000-4-2),  
fast transient burst protection (IEC ±000­4­4), and radiated  
immunity (IEC ±000-4-3). EM emissions include radiated and  
conducted emissions as required by Information Technology  
Equipment EN 55022, CISPR 22.  
1
2
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.  
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.  
Figure 1.  
charge pump, all transmitters, and three of the five receivers are  
disabled. The remaining 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 ADM2±3E out of the shutdown mode.  
Operating from a single 5 V supply, four external 0.± μF  
capacitors are required.  
All devices fully conform to the EIA-232-E and CCITT V.28  
specifications and operate at data rates up to 230 kbps. Shut-  
down and enable control pins are provided on some of the  
products (see Table ±).  
The ADM207E and ADM208E are available in 24-lead PDIP, SSOP,  
available in 28-lead SSOP, TSSOP, and SOIC_W packages. All  
products are backward compatible with earlier ADM2xx products,  
facilitating easy upgrading of older designs.  
The shutdown function on the ADM2±±E disables the charge  
pump and all transmitters and receivers. On the ADM2±3E the  
Table 1. Selection Table  
Model  
Supply Voltage  
Drivers  
Receivers  
ESD Protection  
Shutdown  
Enable  
Packages  
ADM206E  
ADM207E  
ADM208E  
ADM2±±E  
ADM2±3E  
5 V  
5 V  
5 V  
5 V  
5 V  
4
5
4
4
4
3
3
4
5
5
±±5 kV  
±±5 kV  
±±5 kV  
±±5 kV  
±±5 kV  
Yes  
No  
No  
Yes  
Yes  
RW-24  
No  
N-24-±, RW-24, RS-24, RU-24  
N-24-±, RW-24, RS-24, RU-24  
RW-28, RS-28, RU-28  
RW-28, RS-28, RU-28  
No  
Yes  
±
SHDN  
Yes (EN)  
Yes (  
)
± Two receivers active.  
Rev. E  
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 that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2006 Analog Devices, Inc. All rights reserved.  
 
 
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