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ST232
APPLICATION CIRCUITS (note 1, note 2)
+5V INPUT
+
C5
1
C1+
C1 +
3 C1-
4 C2+
C2 +
5 C2-
16
Vcc
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO -10V
VOLTAGE
INVERTER
+5V
TTL / CMOS INPUTS
11 T1IN
10 T2IN
400K
T1
+5V
400K
T2
C3 +
2
V+
+10V
V- 6
-10V
C4 +
T1OUT 14
T2OUT 7
RS 232 OUTPUTS
12 R1OUT
R1
TTL / CMOS OUTPUTS
9 R2OUT
R2
GND
15
R1IN 13
5K
R2IN 8
5K
RS 232 INPUTS
Note 1: C1-4 capacitors can even be 1 µF ones.
Note 2: C1-4 canbe common or biased capacitors.
Capacitance Value (µF)
C1
C2
C3
C4
C5
0.1
0.1
0.1
0.1
0.1
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