ADM223/ADM230L–ADM241L
+5V INPUT
1µF
6.3V
10 C1+
12 C1–
13 C2+
14 C2–
5
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
V
CC
9
V+ 11
1µF
6.3V
1µF
T2
OUT
T1
OUT
R2
IN
R2
OUT
T1
IN
R1
OUT
R1
IN
GND
V
CC
C1+
1
2
3
4
5
6
7
8
9
10
24
T3
OUT
23 R3
IN
22
21
20
R3
OUT
1µF
16V
V– 15
1µF
16V
T1
OUT
T2
OUT
RS-232
OUTPUTS
T1
IN
T1
2
T4
IN
T4
OUT
T3
IN
TTL/CMOS
INPUTS
*
T2
IN
T3
IN
T4
IN
R1
OUT
R2
OUT
18
T2
1
24
ADM238L
TOP VIEW
(Not to Scale)
19
19
T3
T4
R1
R2
T3
OUT
T4
OUT
R1
IN
R2
IN
RS-232
INPUTS
**
18 T2
IN
17
R4
OUT
21
6
4
20
7
3
16 R4
IN
15
14
13
V–
C2–
C2+
TTL/CMOS
OUTPUTS
V+ 11
C1– 12
R3
OUT
R4
OUT
22
17
GND
8
R3
R4
23
R3
IN
R4
IN
16
ADM238L
Figure 17. ADM238L 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 18. ADM238L Typical Operating Circuit
+5V INPUT
1µF
V
CC
4
V+ 5
V– 8
1µF
16V
T1
IN
TTL/CMOS
INPUTS
*
T2
IN
T3
IN
R1
OUT
R2
OUT
TTL/CMOS
OUTPUTS
24
23
T1
19
20
13
T1
OUT
T2
OUT
RS-232
OUTPUTS
+7.5V TO +13.2V
INPUT
R1
OUT
R1
IN
GND
V
CC
V+
C+
C–
V–
R5
IN
R5
OUT
R4
OUT
1
2
3
4
5
6
7
8
9
10
11
24
T1
IN
1µF
16V
6
7
C1+
C1–
+12V TO –12V
VOLTAGE
INVERTER
23 T2
IN
22
21
20
R2
OUT
R2
IN
T2
OUT
T1
OUT
R3
IN
R3
OUT
T3
IN
22
R2
21
T2
ADM239L
TOP VIEW
(Not to Scale)
19
18
17
16
16
T3
R1
T3
OUT
R1
IN
R2
IN
RS-232
INPUTS
**
1
2
15 NC
14
13
EN
T3
OUT
R3
OUT
R4
OUT
17
11
R3
R4
18
R3
IN
R4
IN
R4
IN
12
NC = NO CONNECT
12
R5
OUT
EN
10
14
R5
9
15
R5
IN
NC
GND
3
ADM239L
Figure 19. ADM239L 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 20. ADM239L Typical Operating Circuit
–8–
REV. 0
AD [ ANALOG DEVICES ]
