0.1 μF, 5 V Powered CMOS
RS-232 Drivers/Receivers
ADM206/ADM207/ADM208/ADM211/ADM213
FEATURES
0.1 μF to 10 μF capacitors
120 kB/s data rate
Two receivers active in shutdown (ADM213)
On-board dc-to-dc converters
±9 V output swing with 5 V supply
Low power (15 mW)
Low power shutdown ≤ 5 μW
±30 V receiver input levels
Latch-up free
Pin compatible to MAX206-211/213
TYPICAL OPERATING CIRCUIT
5V INPUT
+
12
14
0.1
μ
F
16V
0.1
μ
F
16V
C1+
C1–
C2+
C2–
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
T1
T2
T3
T4
R1
R2
R3
R4
R5
V
CC 11
V+
13
V–
17
0.1
μ
F
+ 6.3V
0.1
μ
F
+ 16V
+
0.1
μ
F
+
15
16
T1
IN
T2
IN
T3
IN
T4
IN
R1
OUT
R2
OUT
TTL/CMOS
OUTPUTS
R3
OUT
R4
OUT
R5
OUT
EN
7
2
T1
OUT
T2
OUT
T3
OUT
T4
OUT
R1
IN
R2
IN
R3
IN
R4
IN
R5
IN
SD
RS-232
INPUTS
2
RS-232
OUTPUTS
6
3
TTL/CMOS
INPUTS
1
20
1
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
21
28
8
9
5
4
26
27
22
23
19
18
24
25
GND
10
ADM211
NOTES
1
INTERNAL 400k
Ω
PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
INTERNAL 5k
Ω
PULL-DOWN RESIST OR ON EACH RS-232 INPUT.
Figure 1.
GENERAL DESCRIPTION
The ADM2xx family of line drivers/receivers is intended for all
EIA-232-E and V.28 communications interfaces, especially in
applications where ±12 V is not available. The ADM206,
ADM211, and ADM213 feature a low power shutdown mode
that reduces power dissipation to less than 5 μW, making them
ideally suited for battery-powered equipment. The ADM213 has
an active low shutdown and an active high receiver-enable
Table 1. Selection Table
Part
Number
ADM206
ADM207
ADM208
ADM211
ADM213
Power Supply
Voltage
5V
5V
5V
5V
5V
Number of RS-
232 Drivers
4
5
4
4
4
Number of
RS-232 Receivers
3
3
4
5
5
External
Capacitors
4
4
4
4
4
Low Power
Shutdown (SD)
Yes
No
No
Yes
Yes (SD)
TTL Three-
State EN
Yes
No
No
Yes
Yes (EN)
Number of Receivers
Active in Shutdown
0
0
0
0
2
control. Two receivers of the ADM213 remain active during
shutdown. This feature is useful for ring indicator monitoring.
All members of the ADM2xx family include two internal charge
pump voltage converters that allow operation from a single 5 V
supply. These parts convert the 5 V input power to the ±10 V
required for RS-232 output levels.
Rev. D
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.
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