ADM206E/ADM207E/ADM208E/ADM211E/ADM213E
Rev. E | Page 7 of 20
TOP VIEW
(Not to Scale)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
ADM213E
T3
OUT
T1
OUT
T4
OUT
R3
IN
T2
OUT
R2
IN
R3
OUT
R2
OUT
T2
IN
EN
R4
IN
1
T1
IN
R1
OUT
R4
OUT
1
T4
IN
R1
IN
GND
T3
IN
R5
OUT
1
V
CC
C1+
R5
IN
1
V–
V+
C1–
C2–
C2+
1
ACTIVE IN SHUTDOWN.
SHDN
00068-010
Figure 10. ADM213E Pin Configuration
0.1µF
16V
0.1µF
16V
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
TTL/CMOS
INPUTS
1
TTL/CMOS
OUTPUTS
RS-232
OUTPUTS
RS-232
INPUTS
2
+
+
0.1µF
5V INPU
+
+
+
T1
T2
T3
T4
R1
R2
R3
R4
R5
GND
ADM213E
T1
IN
T2
IN
T3
IN
T4
IN
R1
OUT
R2
OUT
R3
OUT
R4
OUT
3
R5
OUT
3
EN
T1
OUT
T2
OUT
T3
OUT
T4
OUT
R1
IN
R2
IN
R3
IN
R4
IN
3
R5
IN
3
C1+
C1–
C2+
C2–
V
CC
V+
V–
SHDN
1
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
3
ACTIVE IN SHUTDOWN.
23
25
4
9
18
3
2
27
28
1
17
11
13
22
24
5
8
19
6
7
26
21
20
15
16
12
14
10
00068-011
0.1µF
6.3V
0.1µF
16V
Figure 11. ADM213E Typical Operating Circuit
Table 6. Pin Function Descriptions
Mnemonic Function
V
CC
Power Supply Input (5 V ± 10%).
V+ Internally Generated Positive Supply (+9 V nominal).
V– Internally Generated Negative Supply (−9 V nominal).
GND Ground Pin. Must be connected to 0 V.
C1+, C1–
External Capacitor 1 is connected between these pins. A 0.1 μF capacitor is recommended, but larger capacitors (up to
47 μF) can be used.
C2+, C2–
External Capacitor 2 is connected between these pins. A 0.1 μF capacitor is recommended, but larger capacitors (up to
47 μF) can be used.
T
IN
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kΩ pull-up resistor to V
CC
is connected on
each input.
T
OUT
Transmitter (Driver) Outputs. These are RS-232 signal levels (typically ±9 V).
R
IN
Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is connected on
each input.
R
OUT
Receiver Outputs. These are TTL/CMOS output logic levels.
EN/EN Receiver Enable (active high on ADM213E, active low on ADM211E). This input is used to enable/disable the receiver
outputs. With
EN = low for the ADM211E (EN = high for the ADM213E), the receiver outputs are enabled. With EN = high
for the ADM211E (EN = low for the ADM213E), the receiver outputs are placed in a high impedance state. (See
Table 3
and
Table 4.)
SHDN/SHDN Shutdown Control (active low on ADM213E, active high on ADM211E). When the ADM211E is in shutdown, the charge
pump is disabled, the transmitter outputs are turned off, and all receiver outputs are placed in a high impedance state.
When the ADM213E is in shutdown, the charge pump is disabled, the transmitter outputs are turned off, and Receiver R1 to
Receiver R3 are placed in a high impedance state; Receiver R4 and Receiver R5 on the ADM213E continue to operate
normally during shutdown. (See
Table 3 and Table 4.) Power consumption for all parts reduces to 5 μW in shutdown.
