EMI/EMC-Compliant, ±15 kV ESDProtected,
RS-232 Line Drivers/Receivers
ADM206E/ADM207E/ADM208E/ADM211E/ADM213E
FEATURES
CONNECTION DIAGRAM
5V INPUT
0.1µF
10V
0.1µF
10V
C1+
C1–
15
C2+
16
+
12
14
+
C2–
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
VCC 11
V+ 13
V– 17
0.1µF
+ 6.3V
+
0.1µF
0.1µF
+ 10V
T1IN
6
T2
3
T2OUT
T3IN
20
T3
1
T3OUT
21
T4
28
T4OUT
8
R1
9
R1IN
5
R2
4
R2IN
R3OUT
26
R3
27
R3IN
22
R4
23
R4IN
R5OUT
GENERAL DESCRIPTION
T2IN
R4OUT
TTL/CMOS
OUTPUTS
T1OUT
R2OUT
Laptop computers
Notebook computers
Printers
Peripherals
Modems
2
R1OUT
APPLICATIONS
T1
T4IN
TTL/CMOS
INPUTS1
7
19
R5
18
R5IN
25
SHDN (ADM211E)
SHDN (ADM213E)
EN (ADM211E)
EN (ADM213E)
The ADM2xxE is a family of robust RS-232 and V.28 interface
devices that operate from a single 5 V power supply. These products 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. Shutdown 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
24
GND
ADM211E/
ADM213E
RS-232
OUTPUTS
RS-232
INPUTS2
10
1 INTERNAL
2 INTERNAL
400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
00068-001
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
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
ADM207E
ADM208E
ADM211E
ADM213E
5V
5V
5V
5V
5V
4
5
4
4
4
3
3
4
5
5
±15 kV
±15 kV
±15 kV
±15 kV
±15 kV
Yes
No
No
Yes
Yes (SHDN)1
Yes
No
No
Yes
Yes (EN)
RW-24
N-24-1, RW-24, RS-24, RU-24
N-24-1, RW-24, RS-24, RU-24
RW-28, RS-28, RU-28
RW-28, RS-28, RU-28
1
Two receivers active.
Rev. E
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