VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Data Sheet

VSC7940

SONET/SDH 3.125Gb/s

Laser Diode Driver with Automatic Power Control

G52357-0, Rev 3.2

Page 5

05/11/01

© 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

VCC1

1

(Pin 1)

1211.025

1995.05

VCC4

25

(Pin 18)

406.025

80.95

DATA+

2

(Pin 2)

1096.025

1995.05

DB_OUT+

26

521.025

80.95

DATA-

3

(Pin 3)

981.025

1995.05

OUT+

27

(Pin 19)

636.025

80.95

VCC1

4

(Pin 4)

866.025

1995.05

OUT–

28

(Pin 20)

751.025

80.95

GND1

5

751.025

1995.05

DB_OUT–

29

866.025

80.95

VCC1

6

636.025

1995.05

VCC4

30

(Pin 21)

981.025

80.95

CLK+

7

(Pin 5)

521.025

1995.05

GND4

31

(Pin 22)

1096.025

80.95

CLK-

8

(Pin 6)

406.025

1995.05

GND3

32

(Pin 23)

1211.025

80.95

VCC1

9

(Pin 7)

291.025

1995.05

MD

33

(Pin 24)

1326.025

80.95

GND1

10

80.95

1784.975

GND3

34

1535.05

289.975

LATCH

11

(Pin 8)

80.95

1669.975

VCC3

35

(Pin 25)

1535.05

404.975

ENABLE

12

(Pin 9)

80.95

1554.975

CAPC

36

(Pin 26)

1535.05

519.975

DISABLE

13

(Pin 10)

80.95

1439.975

PB_GND

37

1535.05

634.975

GND1

14

80.95

1324.975

GND3

38

(Pin 27)

1535.05

749.975

BIASMON

15

(Pin 11)

80.95

1209.975

PB_GND

39

1535.05

864.975

MODMON

16

(Pin 12)

80.95

1094.975

GND2

40

1535.05

979.975

FAIL

17

(Pin 13)

80.95

979.975

RESERVED

41

(Pin 28)

1535.05

1094.975

GND4

18

80.95

864.975

APCSET

42

(Pin 29)

1535.05

1209.975

PB_GND

19

80.95

749.975

GND2

43

1535.05

1324.975

APCFILT

20

(Pin 14)

80.95

634.975

MODSET

44

(Pin 30)

1535.05

1439.975

GND4

21

(Pin 15)

80.95

519.975

BIASMAX

45

(Pin 31)

1535.05

1554.975

VCC4

22

(Pin 16)

80.95

404.975

VCC2

46

(Pin 32)

1535.05

1669.975

BIAS

23

(Pin 17)

80.95

289.975

GND2

47

1535.05

1784.975

PB_GND

24

291.025

80.95

GND1

48

1336.025

1995.05