SP339ECR1-L/TR View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

SP339ECR1-L/TR

RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION

Exar Corporation 

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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

120̢

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

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