Application Circuits

For telephone interfacing (with batteries)

* The IC substrate should be connected to VDD in the PCB layout artwork.

HT1611C

Rev. 1.10

8

August 17, 2001

HD I

SK

DI

PO

12/ 2 4

HK

0. 1 m F

TI M E R

327 68H z

8 / 1 0 - D ig it L C D

CO M SEG

CO M

SEG CO M

30

2

13

1

S1

S2

1. 5V

H T 1611C

1

26

2

27

3

28

4

29

5

30

6

31

7

32

8

33

9

34

10

35

11

36

12

37

13

38

14

39

40

16

41

17

42

18

43

19

44

20

45

21

46

22

47

23

48

24

49

25

50

15

DO C L O C K

47k W

H T 9 3 XXX D i a l e r

HF O

805 0

HF I

330 m F

10V

VS S

47k W

1A b r i dge

Ri n g

Ti p

A9 2

33k W

100k W

100k W

HF I

V DD

805 0

270k W

47k W

A4 2

2. 7 k W

5. 1V

220k W

10 M W

330k W

HK S

1N 41 48 ´ 3

+

O ff- h o o k

On - h o o k

HD I

VS S

X1

X2

3. 58M H z

0. 1 m F

0. 02 m F