MAX207_211 具有±40V过压保护收发链路.pdf

文档介绍：DESIGN SHOWCASE
±40V
RS-232
RS-232
|±5V|
MAX211 ( – V-
) ( ) 100kΩ
1
1
(±40V)
Tx Tx Tx
RS-232 ( IC1 IC2) (V+) (V-) (V-)
( IC3 IC4)
~ ~- ~-
– 60Ω
VCC
12/96 Electronic Product
Design (UK)
[ ]
13
+5V +5V
IC2 IC1
MAX211
VCC MAX211 V
C1+ C1+ CC
-5V TO +10V V+ -5V TO +10V V+
VOLTAGE DOUBLER IC4 VOLTAGE DOUBLER IC3
C1- C1-
+5V MAX367 +5V MAX367
400k V+ 400k V+
T1 T1OUT IN1 OUT1 T1 T1OUT IN1 OUT1
+5V +5V
400k 400k IC5
T2 T2OUT IN2 OUT2 T2 T2OUT IN2 OUT2
+5V +5V MAX207 +5V
400k 400k
T3 T3OUT IN3 OUT3 T3 T3OUT IN3 OUT3
+5V +5V
V+ VCC C1+
400k 400k -5V TO +10V
VOLTAGE DOUBLER
T4 T4 T4
OUT T4 OUT C1-
R1OUT R1 IN4 OUT4 R1OUT R1 IN4 OUT4
+5V
5k 5k
400k
T1OUT T1
R2OUT R2 IN5 OUT5 R2OUT R2 IN5 OUT5
+5V
5k 5k 400k
T2OUT T2
R3 R3 IN6 OUT6 R3
OUT OUT R3 IN6 OUT6 +5V
5k 5k 400k
T3OUT T3
R4OUT R4 IN7 OUT7 R4OUT R