SP339EER1-0A Datasheet, PDF (13/23 Pages) Exar Corporation – RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION

SP339E
REV. 1.0.4
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
FIGURE 3. MODE 10 - RS-485 HALF DUPLEX
C2
C3
0.1µF
0.1µF
C1
0.1µF
C4
0.1µF
Cc
1.0µF
40
39
38
37
36
35
34
33
32
31
L1 = 1
1
L2
2
L3
3
T1
120Ì¢
R1
R2
30
29
28
4
27
L6 = 1
5
26
6
25
L8 = 1
7
24
L9 = 1
8
23
Vcc
9
22
All pull-downs 330k̢
10
21
11
12
13
14
15
16
17
18
19
20
13