MAX3222/MAX3232/MAX3237/MAX3241
3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232
Transceivers Using Four 0.1µF External Capacitors
6
5
V
+
4
3
OUT
V
= 3.0V
CC
2
T1
T2
1
V
+
-
OUT
0
-1
-2
-3
-4
-5
-6
V
V
T3
CC
1
OUT
V
-
OUT
0
2
3
4
5
6
7
LOAD CURRENT PER TRANSMITTER (mA)
Figure 4a. MAX3241 Transmitter Output Voltage vs. Load Current per Transmitter
V
= 3V
CC
to 5.5V
0.1μF
26
27
3
28
24
V
CC
C1+
C1-
V+
V-
C
C
C3
C4
1
COMPUTER SERIAL PORT
1
2
MAX3241
C2+
2
C2-
9
T1IN
14
T1OUT
T2OUT
T3OUT
+V
+V
T2IN
10
11
13
T3IN
12
21
V
CC
-V
R1OUTB
GND
Tx
20
19
R2OUTB
R1OUT
R1IN
R2IN
R3IN
R4IN
4
5
6
5kΩ
18
17
16
R2OUT
R3OUT
5kΩ
5kΩ
5kΩ
5kΩ
7
R4OUT
R5OUT
EN
MOUSE
15
23
R5IN
8
22
SHDN
GND
25
Figure 4b. Mouse Driver Test Circuit
10
Maxim Integrated
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
