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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