LT1381 Linear Technology, LT1381 Datasheet - Page 6

• Manufacturer Part Number: LT1381
• Description: Low Power 5V RS232 Dual Driver/Receiver with 0.1uF Capacitors
• Manufacturer: Linear Technology

TYPICAL APPLICATIO S
LT1381
6
(DATA FROM SYSTEM)
ISOLATOR
10% FROM
OUTPUT
SYSTEM
V
(DATA TO SYSTEM)
ISOLATOR OUTPUT
RS232
INPUT
IN
ISOLATOR INPUT
= 5V
+
100 F
V
V
IN
OUT
ISOLATION BARRIER
IN
OS
GND2
GND1
GND
I
V
LIM
CC
LTC1145
LTC1145
LT1111
47
GND1
GND2
SW2
V
U
V
SW1
CC
IN
OS
FB
IN
Data Transmission Across Isolation Barrier
CTX20-1
1:1
Isolated RS232 Driver/Receiver
1N5818
L1
20 H
FLOATING GROUND
SYSTEM GROUND
1381 TA04
1N5818
+
+
10k
1k
13.7V
+
0.1 F
0.1 F
11
+
ISOLATOR
1
3
4
5
9
100 F
OUTPUT
RS232
INPUT
1
1 F
LT1381
RS232
D
X
R
X
0.1 F
16
2
6
8
14
15
+
+
V
CC
RS232 INPUT
RS232 OUTPUT
LT1121-5
0.1 F
0.1 F
+
10 F
LT1381 • TA03
1381 TA05
5V 10%