Datasheet

±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps,
RS-232 Transceivers with AutoShutdown
Typical Operating Circuits
MAX3223E**
FORCEON
EN
14
1
R2OUT10
R1OUT15
FORCEOFF
20
INVALID 11
R2IN
9
GND
18
RS-232
OUTPUTS
TTL/CMOS
INPUTS
T2IN
12
T1IN
13
C2-
6
C2+
5
C1-
4
C1+
2
R1IN
16
T2OUT
8
T1OUT 17
V-
7
V+
3
V
CC
V
CC
C4
0.1µF
C3
0.1µF
0.1µF
19
C1
0.1µF
C2
0.1µF
C
BYPASS
+3.3V
RS-232
INPUTS
TO POWER-
MANAGEMENT
UNIT
TTL/CMOS
OUTPUTS
5kΩ
5kΩ
MAX3243E
FORCEOFF
23
R5OUT
15
R4OUT
16
R3OUT
17
R2OUT
18
R1OUT
19
R2OUTB
20
LOGIC
OUTPUTS
5kΩ
5kΩ
5kΩ
5kΩ
5kΩ
R5IN 8
R4IN
7
R3IN
6
R2IN 5
R1IN
4
RS-232
INPUTS
GND
25
RS-232
OUTPUTS
LOGIC
INPUTS
T3IN
12
T2IN
13
T1IN
14
C2-
2
C2+
1
C1-
24
C1+
28
T3OUT
11
T2OUT 10
T1OUT 9
V-
3
V+
27
V
CC
C
BYPASS
V
CC
C4
0.1µF
C3
0.1µF
0.1µF
26
C1
0.1µF
C2
0.1µF
FORCEON
INVALID
22
21
TO POWER-
MANAGEMENT UNIT
+3.3V
MAX3221E*
FORCEON
EN
12
1
R1OUT9
FORCEOFF
16
INVALID 10
GND
14
T1IN
11
C2-
6
C2+
5
C1-
4
C1+
2
R1IN 8
T1OUT 13
V-
7
V+
3
V
CC
V
CC
C4
0.1µF
C3
0.1µF
0.1µF
15
C1
0.1µF
C2
0.1µF
C
BYPASS
+3.3V
TO POWER-
MANAGEMENT
UNIT
5kΩ
*MAX3221E PIN OUT REFERS TO SSOP/TSSOP PACKAGES.
**MAX3223E PIN OUT REFERS TO DIP/SSOP/TSSOP PACKAGES.
16
Maxim Integrated
MAX3221E/MAX3223E/MAX3243E