VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Data Sheet

VSC7939

SONET/SDH 3.125Gb/s

Laser Diode Driver with Automatic Power Control

Page 6

G52350-0, Rev 3.2

02/26/01

© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012

Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com

Internet: www.vitesse.com

Table 4: Pad Coordinates

Signal

Name

Pad

No.

Coordinates (µm)

Signal

Name

Pad

No.

Coordinates (µm)

X

Y

X

Y

GND2

1

1613.55

1863.475

BIAS

25

(Pin 17)

159.45

368.475

GND1

2

1414.525

2073.55

PB_GND

26

369.525

159.45

VCC1

3

(Pin 1)

1289.525

2073.55

VCC4

27

(Pin 18)

484.525

159.45

DATA+

4

(Pin 2)

1174.525

2073.55

DB_OUT+

28

599.525

159.45

DATA-

5

(Pin 3)

1059.525

2073.55

OUT+

29

(Pin 19)

714.525

159.45

VCC1

6

(Pin 4)

944.525

2073.55

OUT–

30

(Pin 20)

829.525

159.45

GND1

7

829.525

2073.55

DB_OUT–

31

944.525

159.45

VCC1

8

714.525

2073.55

VCC4

32

(Pin 21)

1059.525

159.45

CLK+

9

(Pin 5)

599.525

2073.55

GND4

33

(Pin 22)

1174.525

159.45

CLK-

10

(Pin 6)

484.525

2073.55

GND3

34

(Pin 23)

1289.525

159.45

VCC1

11

(Pin 7)

369.525

2073.55

MD

35

(Pin 24)

1404.525

159.45

GND1

12

159.45

1863.475

GND3

36

1613.55

368.475

LATCH

13

(Pin 8)

159.45

1748.475

VCC3

37

(Pin 25)

1613.55

483.475

ENABLE

14

(Pin 9)

159.45

1633.475

CAPC

38

(Pin 26)

1613.55

598.475

DISABLE

15

(Pin 10)

159.45

1518.475

PB_GND

39

1613.55

713.475

GND

16

159.45

1403.4

GND3

40

(Pin 27)

1613.55

828.475

BIASMON

17

(Pin 11)

159.45

1288.475

PB_GND

41

1613.55

943.475

MODMON

18

(Pin 12)

159.45

1058.475

GND3

42

1613.55

1058.475

FAIL

19

(Pin 13)

159.45

1058.475

RESERVED

43

(Pin 28)

1613.55

1173.475

GND4

20

159.45

943.475

APCSET

44

(Pin 29)

1613.55

1288.475

PB_GND

21

159.45

828.475

GND2

45

1613.55

1403.475

APCFILT

22

(Pin 14)

159.45

713.475

MODSET

46

(Pin 30)

1613.55

1518.475

GND4

23

(Pin 15)

159.45

598.475

BIASMAX

47

(Pin 31)

1613.55

1633.475

VCC4

24

(Pin 16)

159.45

483.475

VCC2

48

(Pin 32)

1613.55

1748.475