0.1 μF, 5 V Powered CMOS
RS-232 Drivers/Receivers
ADM206/ADM207/ADM208/ADM211/ADM213
FEATURES
TYPICAL OPERATING CIRCUIT
5V INPUT
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
+
0.1μF
16V
+
12
C1+
14
0.1μF
16V
C1–
15
C2+
16
C2–
+5V TO +10V
VOLTAGE
DOUBLER
VCC 11
+10V TO –10V
VOLTAGE
INVERTER
V– 17
V+ 13
0.1μF
+ 6.3V
0.1μF
+ 16V
T1IN
T1OUT
T2IN
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
R4OUT
22
R4
23
R4IN
R5OUT
19
R5
18
R5IN
EN
TTL/CMOS
OUTPUTS
2
R2OUT
Computers
Peripherals
Modems
Printers
Instruments
T1
R1OUT
APPLICATIONS
7
T4IN
TTL/CMOS
INPUTS1
+
0.1μF
24
25
SD
GND
ADM211
RS-232
OUTPUTS
RS-232
INPUTS2
NOTES
1INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2INTERNAL 5kΩ PULL-DOWN RESIST OR ON EACH RS-232 INPUT.
00067-0-001
10
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
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.
Table 1. Selection Table
Part
Number
ADM206
ADM207
ADM208
ADM211
ADM213
Power Supply
Voltage
5V
5V
5V
5V
5V
Number of RS232 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 ThreeState EN
Yes
No
No
Yes
Yes (EN)
Number of Receivers
Active in Shutdown
0
0
0
0
2
Rev. D
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