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參數資料
| 型號： | ADM2209E |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | EMI-/EMC-Compliant +-15 kV ESD Protected, Dual RS-232 Port with Standby |
| 中文描述： | EMI-/EMC-Compliant -15千伏ESD保護，雙路RS - 232備用端口 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 142K |
| 代理商： | ADM2209E |
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.
a
ADM2209E
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., 1999
EMI-/EMC-Compliant
6
15 kV ESD Protected,
Dual RS-232 Port with Standby
FEATURES
Two Complete Serial Ports, Six Drivers and Ten Receivers
Operates with 3 V or 5 V Logic
Low Power CMOS: <5 mA Operation
Low Standby Current: 100
m
A
460 kbit/s Data Rate Guaranteed Laplink
-Compatible
0.1
m
F Charge Pump Capacitors
Single +12 V Power Supply
+3.3 V/+5 V Standby Supply
One Receiver on Each Port Active in Standby
Complies with 89/336/EEC EMC Directive
ESD Protection to IEC1000-4-2 (801.2)
6
8 kV: Contact Discharge
6
15 kV: Air-Gap Discharge
6
15 kV: Human Body Model
Electrical Fast Transient (EFT) Immunity (IEC1000-4-4)
Low EMI Emissions (EN55022)
Eliminates Costly TransZorbs
Conforms to EIA/TIA-232-E Specifications
Fail-Safe Receiver Outputs
APPLICATIONS
Personal Computers
Printers
Peripherals
Modems
FUNCTIONAL BLOCK DIAGRAM
+
T1
R1
OUT
A
R1
IN
A
T2
R2
OUT
A
R2
IN
A
T3
T3
OUT
A
T3
IN
A
R1
T1
IN
A
T1
OUT
A
R5
R4
R3
R3
OUT
A
R4
OUT
A
R5
OUT
A
R3
IN
A
R4
IN
A
R5
IN
A
R2
T2
IN
A
T2
OUT
A
V
DD
T1
R1
OUT
B
R1
IN
B
T2
R2
OUT
B
R2
IN
B
T3
T3
OUT
B
T3
IN
B
R1
T1
IN
B
T1
OUT
B
R5
R4
R3
R3
OUT
B
R4
OUT
B
R5
OUT
B
R3
IN
B
R4
IN
B
R5
IN
B
R2
T2
IN
B
T2
OUT
B
GND
V–
STBY
C+
C–
0.1
m
F
0.1
m
F
CHARGE PUMP
VOLTAGE INVERTER
CMOS
INPUTS
CMOS
OUTPUTS
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS
CMOS
INPUTS
CMOS
OUTPUTS
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS
ADM2209E
0.1
m
F
0.1
m
F
3.3V/5V
+12V
+
GENERAL DESCRIPTION
The ADM2209E is a complete, dual RS-232 port on a single
chip, containing six drivers and ten receivers and fully meeting
EIA-232 and V.28 specifications. The device features an on-
board dc-to-dc converter to generate a –12 V power rail, elimi-
nating the need for a negative power supply.
The ADM2209E is suitable for operation in harsh electrical
environments and is compliant with the EU directive on EMC
(89/336/EEC). Both the level of emissions and immunity are in
compliance. EM immunity includes ESD protection in excess of
±
15 kV on all I-O lines (1000-4-2), Electrical Fast Transient
protection (1000-4-4) and Radiated Immunity (1000-4-3). EM
emissions include radiated and conducted emissions as required
by Information Technology Equipment EN55022, CISPR22.
The ADM2209E conforms to the EIA-232E and CCITT V.28
specifications and operates at data rates up to 460 kbps.
In standby mode, one receiver on each port (R5) remains active
to allow monitoring of peripheral devices while the rest of the
system is in power-saving mode. This feature allows the
ADM2209E to wake up the system when a peripheral device
begins communication.
The ADM2209E is available in a 38-lead TSSOP package.
Laplink is a registered trademark of Traveling Software, Inc.
TransZorb is a registered trademark of General Semiconductor Industries, Inc.
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