Datasheet

typical characteristics
Isolated RS-232 interface
OPTOS-4x4N26 (78250(M)), 4 x CNY17-3 (78250V(M))
4 Newport Components
78250
Converter Transformer
IN4148
+10 V
OUT
+
10 V
OUT
MAX251MAX250
9 Pin D-Type Connector
11
5
6
4
x4 OPTOS
1
µ F
1
2
3
6
4
78250
D1
14
13
+
3
AC
3
1
2
4
5
6
6
7
4.7
µ F
10
V
CC
D2
EN
SHUTDOWN
T2IN
T2L
8
1
5
+5V
TD
2
GND
R2DIN
12
RD
T1IN
T1L
4
RTS
R1OUT
R1DIN
9
T1
R2
CTS
T2
R1
R2OUT
BYP
ISO GND
14
2+V
-V 13
1
µ F
+
1
µ F
R2
1
T1DIN
T1OUT 12
T1
T2DIN
T2OUT 11
T2
R1L
R1IN
CTS
R1
R2L
R2IN 9
10
TD
DCD
RD
RTS
DSR
5
9
4
8
3
7
2
1
SG
6
Isolation Barrier