±15kV ESD-Prote c te d, 1µA, 3.0V to 5.5V, 250kbps ,
RS -2 3 2 Tra n s c e ive rs w it h Au t o S h u t d o w n
1E/MAX243
+3.3V
26
0.1µF
V
CC
27
3
28
C1+
V+
C1
0.1µF
C3
0.1µF
24
1
C1-
COMPUTER SERIAL PORT
MAX3243E
C2+
V-
C4
C2
0.1µF
0.1µF
2
C2-
+V
+V
-V
T1IN
T1OUT
9
14
T2IN
T3IN
LOGIC
INPUTS
T2OUT 10
13
12
11
T3OUT
GND
Tx
R2OUTB
20
R1OUT
R2OUT
R1IN
R2IN
4
5
19
18
5k
5k
5k
E
LOGIC
OUTPUTS
R3OUT
R4OUT
6
7
8
R3IN
R4IN
R5IN
17
16
RS-232
INPUTS
5k
5k
SERIAL
MOUSE
R5OUT
15
23
FORCEON
FORCEOFF
INVALID
V
CC
22
21
V
CC
TO POWER-
MANAGEMENT
UNIT
GND
25
Figure 12b. Mouse Driver Test Circuit
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