ADM206E/ADM207E/ADM208E/ADM211E/ADM213E
REV. B
–6–
14
13
12
11
10
9
8
1
2
3
4
7
6
5
17
16
15
20
19
18
28
27
26
25
24
23
22
21
TOP VIEW
(Not to Scale)
ADM213E
T3
OUT
R3
OUT
R3
IN
T4
OUT
T1
OUT
T2
OUT
R2
IN
R4
OUT
*
R4
IN
*
R2
OUT
T2
IN
T1
IN
R1
OUT
R1
IN
GND
R5
OUT
*
T3
IN
T4
IN
V
CC
C1+
V+
C1–
R5
IN
*
C2+
C2–
V–
EN
*
ACTIVE IN SHUTDOWN
SHDN
Figure 9. ADM213E Pin Configuration
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. 0.1 µF capacitor is recommended but larger capacitors up
to 47 µF may be used.
C2+, C2– External Capacitor 2 is connected between these pins. 0.1 µF capacitor is recommended but larger capacitors up
to 47 µF may 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 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 ADM211E (EN = High ADM213E), the receiver outputs are enabled. With EN
= High (EN = Low ADM213E), the receiver outputs are placed in a high impedance state.
SHDN/SHDN Shutdown Control (Active Low on ADM213E, Active High on ADM211E); Refer to Table II. In shutdown the
charge pump is disabled, the transmitter outputs are turned off and all receiver outputs (ADM211E), receivers R1,
R2, R3 (ADM213E) are placed in a high impedance state. Receivers R4 and R5 on the ADM213E continue to
operate normally during shutdown. Power consumption in shutdown for all parts reduces to 5 µW.
TTL/CMOS
INPUTS
*
TTL/CMOS
OUTPUTS
R5
OUT
***
T1
IN
ADM213E
SHDN
RS-232
OUTPUTS
T1
OUT
GND
T2
IN
T3
IN
T4
IN
T2
OUT
T3
OUT
T4
OUT
RS-232
INPUTS
**
R1
IN
R2
IN
R3
IN
R1
OUT
R2
OUT
R3
OUT
*INTERNAL 400kV PULL-UP RESISTOR ON EACH CMOS INPUT
**INTERNAL 5kV PULL-DOWN RESISTOR ON EACH RS-232 INPUT
***ACTIVE IN SHUTDOWN
EN
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
14
12
11
0.1mF
6.3V
+5V INPUT
V
CC
V+
V–
C1+
C1–
C2+
C2–
0.1mF
16V
0.1mF
16V
0.1mF
16V
13
0.1mF
10
15
17
3
1
2
28
T3
T4
T2
T1
21
6
7
20
25
27
9
4
R1
R2
R3
5
8
16
R4
IN
***
R5
IN
***
R4
OUT
***
18
23
R4
R5
19
26
24
22
Figure 10. ADM213E Typical Operating Circuit
