Datasheet
MAX3218
1µA Supply Current, 1.8V to 4.25V-Powered
RS-232 Transceiver with AutoShutdown™
10 ______________________________________________________________________________________
Figure 6. Operating from Unregulated and Regulated Supplies
V
CC
LX
6
1
V+
19
C4
0.1µF
C5
1µF
1µF
C2
15µH
1N6050
3V
DC-DC
CONVERTER
MAX878
OR
MAX756
OR
MAX856
GND
T2
T1
T2OUT
R1IN
R2IN
T1OUT
C1-
C1+
V-
T2IN
R1OUT
R2OUT
T1IN 14
18
C1
0.47µF
C3
1µF
16
15
13
12
11
5, 17, 20
3
4
2
7
8
9
10
FORCEON
INVALID
FORCEOFF
5k
5k
R1
R2
MAX3218