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ADM208EAN Datasheet(PDF) 1 Page - Analog Devices

Part No. ADM208EAN
Description  EMI/EMC-Compliant, ±15 kV ESDProtected, RS-232 Line Drivers/Receivers
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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EMI/EMC-Compliant, ±15 kV ESD­Protected,
RS-232 Line Drivers/Receivers
ADM206E/ADM207E/ADM208E/ADM211E/ADM213E
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.
FEATURES
Complies with 89/336/EEC EMC directive
ESD protection to IEC 1000-4-2 (801-2)
Contact discharge: ±8 kV
Air-gap discharge: ±15 kV
Human body model: ±15 kV
EFT/burst immunity (IEC 1000-4-4)
Low EMI emissions (EN 55022)
Eliminates need for TransZorb® suppressors
230 kbps data rate guaranteed
Single 5 V power supply
Shutdown mode 1 μW
Plug-in upgrade for MAX2xxE
Space saving TSSOP package available
APPLICATIONS
Laptop computers
Notebook computers
Printers
Peripherals
Modems
GENERAL DESCRIPTION
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 ±15 kV on all I/O lines (IEC 1000-4-2),
fast transient burst protection (IEC 1000­4­4), and radiated
immunity (IEC 1000-4-3). EM emissions include radiated and
conducted emissions as required by Information Technology
Equipment EN 55022, CISPR 22.
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 1).
The shutdown function on the ADM211E disables the charge
pump and all transmitters and receivers. On the ADM213E the
CONNECTION DIAGRAM
0.1µF
6.3V
+
+
0.1µF
5V INPUT
+
0.1µF
10V
0.1µF
10V
+
0.1µF
10V
+
T1
T2
T3
T4
R1
R2
R3
R4
R5
GND
ADM211E/
ADM213E
T1IN
T2IN
T3IN
T4IN
R1OUT
R2OUT
R3OUT
R4OUT
R5OUT
T1OUT
T2OUT
T3OUT
T4OUT
R1IN
R2IN
R3IN
R4IN
R5IN
SHDN (ADM211E)
SHDN (ADM213E)
TTL/CMOS
INPUTS1
TTL/CMOS
OUTPUTS
RS-232
OUTPUTS
RS-232
INPUTS2
1 INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2 INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
C1+
C1–
C2+
C2–
VCC
V+
V–
EN (ADM211E)
EN (ADM213E)
12
14
15
16
11
13
17
2
3
1
28
9
4
27
23
18
25
7
6
20
21
8
5
26
22
19
24
10
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
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 ADM213E out of the shutdown mode.
Operating from a single 5 V supply, four external 0.1 μF
capacitors are required.
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.
Table 1. Selection Table
Model
Supply Voltage
Drivers
Receivers
ESD Protection
Shutdown
Enable
Packages
ADM206E
5 V
4
3
±15 kV
Yes
Yes
RW-24
ADM207E
5 V
5
3
±15 kV
No
No
N-24-1, RW-24, RS-24, RU-24
ADM208E
5 V
4
4
±15 kV
No
No
N-24-1, RW-24, RS-24, RU-24
ADM211E
5 V
4
5
±15 kV
Yes
Yes
RW-28, RS-28, RU-28
ADM213E
5 V
4
5
±15 kV
Yes (SHDN)1
Yes (EN)
RW-28, RS-28, RU-28
1 Two receivers active.




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