Datasheet

ADM231L–ADM234L/ADM236L–ADM241L
Rev. C | Page 9 of 20
TYPICAL OPERATING CIRCUITS
ADM231L
1µF
+16V
C1+
C1–
T1
IN
T1
T1
OUT
T2
IN
T2
T2
OUT
RS-232
OUTPUTS
R1
OUT
R1
R1
IN
R2
OUT
R2
IN
TTL/CMOS
OUTPUTS
R2
V–
1µF
+16V
+12V TO –12V
VOLTAGE
INVERTER
V+
GND
+7.5V TO +13.2V
V
CC
1µF
+5V INPUT
00070-0-005
TTL/CMOS
INPUTS
1
RS-232
INPUTS
2
1
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
1
2
8
7
9
6
12
5
10
4
11
3
13
14
Figure 17. ADM231L Typical Operating Circuit (PDIP Pinout)
ADM232L
1µF
+6.3V
1µF
+16V
C1+
C1–
C2–
C2+
T1
IN
T1
T1
OUT
T2
IN
T2
T2
OUT
RS-232
OUTPUTS
R1
OUT
R1
R1
IN
R2
OUT
R2
IN
T
TL/CMO
S
OUTPUTS
R2
V–
1µF
+16V
+10V TO –10V
VOLTAGE
INVERTER
1µF
+6.3V
1µF
+6.3V
5V INPUT
V+
V
CC
+5V TO +10V
VOLTAGE
DOUBLER
GND
00070-0-007
TTL/CMOS
INPUTS
1
RS-232
INPUTS
2
1
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 18. ADM232L Typical Operating Circuit
ADM233L
C1+
C1–
V–
V–
T1
IN
T1
T1
OUT
T2
IN
T2
T2
OUT
RS-232
OUTPUTS
R1
OUT
R1
R1
IN
R2
OUT
R2
IN
TTL/CMOS
OUTPUTS
R2
C2–
C2+
V
CC
GND
+5V INPUT
GND
INTERNAL
–10V POWER
SUPPLY
INTERNAL
+10V POWER
SUPPLY
V+
C2+
C2–
DO NOT MAKE
CONNECTIONS TO
THESE PINS
00070-0-009
TTL/CMOS
INPUTS
1
RS-232
INPUTS
2
1
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 19. ADM233L Typical Operating Circuit
ADM234L
1µF
+6.3V
1µF
+16V
C1+
C1–
C2–
C2+
T1
IN
T1
T1
OUT
T2
IN
T2
T2
OUT
RS-232
OUTPUTS
V–
1µF
+16V
+10V TO –10V
VOLTAGE
INVERTER
1µF
+6.3V
1µF
+6.3V
5V INPUT
V+
V
CC
+5V TO +10V
VOLTAGE
DOUBLER
T3
T4
T3
IN
T4
IN
GND
T3
OUT
T4
OUT
00070-0-011
T
TL/CMOS
INPUTS
1
1
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
Figure 20. ADM234L Typical Operating Circuit