ADM206–ADM211/ADM213
Table 4. Pin Function Descriptions
Mnemonic
V
CC
V+
V–
GND
C+
C–
C1+
C1–
C2+
C2–
T
IN
T
OUT
R
IN
R
OUT
EN/EN
Function
Power Supply Input. 5 V ± 10%.
Internally Generated Positive Supply (10 V nominal) on all parts, except ADM209 . The ADM209 requires an external 9 V to
13.2 V supply.
Internally Generated Negative Supply (–10 V Nominal).
Ground Pin. Must be connected to 0 V.
(ADM209 only) External capacitor (+ terminal) is connected to this pin.
(ADM209 only) External capacitor (– terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (+ terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (– terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (+ terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (– terminal) is connected to this pin.
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kΩ pull-up resistor to V
CC
is connected to
each input.
Transmitter (Driver) Outputs. These are RS-232 levels (typically ± 10 V).
Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is connected to each
input.
Receiver Outputs. These are TTL/CMOS levels.
Enable Input. Active low on ADM206, ADM209, and ADM211. Active high on ADM213. This input is used to enable/disable the
receiver outputs. With EN = low (EN = high ADM213), the receiver outputs are enabled. With EN = high (EN = low ADM213),
the outputs are placed in a high impedance state. This is useful for connecting to microprocessor systems.
Shutdown Input. Active high on ADM206 and ADM211. Active low on ADM213. With SD = high on the ADM206 and ADM211,
the charge pump is disabled, the receiver outputs are placed in a high impedance state, and the driver outputs are turned off.
With SD = low on the ADM213, the charge pump is disabled, the driver outputs are turned off, and all receivers, except R4
and R5, are placed in a high impedance state. In shutdown, the power consumption reduces to 5 µW.
No Connect. No connections are required to this pin.
SD/SD
NC
Table 5. ADM206 and ADM211 Truth Table
SD
0
0
1
EN
0
1
0
Status
Normal Operation
Normal Operation
Shutdown
Transmitters T1–T5
Enabled
Enabled
Disabled
Receivers R1–R5
Enabled
Disabled
Disabled
Table 6. ADM213 Truth Table
SD
0
0
1
1
EN
0
1
0
1
Status
Shutdown
Shutdown
Normal Operation
Normal Operation
Transmitters T1–T4
Disabled
Disabled
Enabled
Enabled
Receivers R1–R3
Disabled
Disabled
Disabled
Enabled
Receivers R4, R5
Disabled
Enabled
Disabled
Enabled
Rev. C | Page 8 of 16
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