Datasheet

ADM231L–ADM234L/ADM236L–ADM241L
Rev. C | Page 10 of 20
T1
IN
T1
OUT
T2
IN
T2
OUT
RS-232
OUTPUTS
T3
IN
T4
IN
R1
OUT
R1
IN
R2
OUT
R2
IN
TTL/CMOS
OUTPUTS
R3
IN
R3
OUT
T3
OUT
T4
OUT
1µF
+6.3V
1µF
+16V
C1+
C1–
C2–
C2+
V–
1µF
+16V
+10V TO –10V
VOLTAGE
INVERTER
1µF
+6.3V
1µF
+6.3V
+5V INPUT
V
CC
+5V TO +10V
VOLTAGE
DOUBLER
T1
T2
T3
T4
R1
R2
R3
V+
SD
ADM236L
GND
00070-0-015
T
TL/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.
EN
Figure 21. ADM236L Typical Operating Circuit
T1
IN
T1
OUT
T2
IN
T2
OUT
RS-232
OUTPUTS
T3
IN
T4
IN
T5
IN
R1
OUT
R1
IN
R2
OUT
R2
IN
TTL/CMOS
OUTPUTS
R3
IN
R3
OUT
T3
OUT
T4
OUT
T5
OUT
1µF
+6.3V
1µF
+16V
C1+
C1–
C2–
C2+
V–
1µF
+16V
+10V TO –10V
VOLTAGE
INVERTER
1µF
+6.3V
1µF
+6.3V
+5V INPUT
V
CC
+5V TO +10V
VOLTAGE
DOUBLER
T1
T2
T3
T4
T5
R1
R2
R3
V+
ADM237L
20
GND
00070-0-017
T
TL/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 22. ADM237L Typical Operating Circuit
ADM238L
T1
IN
T1
T1
OUT
T2
IN
T2
T2
OUT
RS-232
OUTPUTS
T3
T4
T3
IN
T4
IN
R1
OUT
R1
R1
IN
R2
OUT
R2
R2
IN
TTL/CMOS
OUTPUTS
R3
IN
R4
IN
R3
OUT
R4
OUT
T3
OUT
T4
OUT
GND
R3
R4
1µF
+6.3V
1µF
+16V
C1+
C1–
C2–
C2+
V–
1µF
+16V
+10V TO –10V
VOLTAGE
INVERTER
1µF
+6.3V
1µF
+6.3V
+5V INPUT
V+
V
CC
+5V TO +10V
VOLTAGE
DOUBLER
00070-0-019
T
TL/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 23. ADM238L Typical Operating Circuit