ADM223/ADM230L–ADM241L
+5V INPUT
10 C1+
12 C1–
13 C2+
14 C2–
7
V
CC
9
V+ 11
1µF
6.3V
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
1µF
6.3V
1µF
T3
OUT
T1
OUT
T2
OUT
R1
IN
R1
OUT
T2
IN
T1
IN
GND
V
CC
C1+
1
2
3
4
5
6
7
8
9
10
24
T4
OUT
23 R2
IN
22
R2
OUT
1µF
16V
V– 15
1µF
16V
T1
OUT
T2
OUT
RS-232
OUTPUTS
21 SD
20
EN
T4
IN
TTL/CMOS
INPUTS
*
T1
IN
T2
IN
T3
IN
T4
IN
R1
OUT
TTL/CMOS
OUTPUTS
R2
OUT
T1
2
6
T2
3
1
ADM236L
TOP VIEW
(Not to Scale)
19
18
T3
T4
R1
R2
T3
OUT
T4
OUT
R1
IN
R2
IN
RS-232
INPUTS
**
18 T3
IN
17
R3
OUT
19
5
24
4
23
16
21
16 R3
IN
15
14
13
V–
C2–
C2+
22
17
20
V+ 11
C1– 12
R3
OUT
EN
R3
R3
IN
SD
GND
8
ADM236L
*
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
**INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
Figure 13. ADM236L DIP/SOIC Pin Configuration
Figure 14. ADM236L Typical Operating Circuit
+5V INPUT
10 C1+
12 C1–
13 C2+
14 C2–
1µF
6.3V
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
V
CC
9
V+ 11
1µF
6.3V
1µF
T3
OUT
T1
OUT
T2
OUT
R1
IN
R1
OUT
T2
IN
T1
IN
GND
V
CC
C1+
1
2
3
4
5
6
7
8
9
10
24
T4
OUT
1µF
16V
V– 15
23 R2
IN
22
21
20
R2
OUT
T5
IN
T5
OUT
T4
IN
TTL/CMOS
INPUTS
*
T2
IN
T3
IN
T4
IN
T1
IN
1µF
16V
T1
OUT
T2
OUT
RS-232
OUTPUTS
7
T1
T2
2
3
6
ADM237L
TOP VIEW
(Not to Scale)
19
18
19
T3
1
24
T3
OUT
T4
OUT
T5
OUT
R1
IN
R2
IN
18 T3
IN
17
R3
OUT
T5
IN
R1
OUT
TTL/CMOS
OUTPUTS
R2
OUT
T4
16 R3
IN
15
14
13
V–
C2–
C2+
21
T5
R1
R2
20
5
4
23
16
V+ 11
C1– 12
22
17
GND
8
RS-232
INPUTS
**
R3
OUT
R3
R3
IN
ADM237L
Figure 15. ADM237L DIP/SOIC Pin Configuration
*
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
**INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
Figure 16. ADM237L Typical Operating Circuit
REV. 0
–7–
AD [ ANALOG DEVICES ]
