VITESSE

SEMICONDUCTOR CORPORATION

Advance Product Information

VSC7991

SONET/SDH 10.7Gb/s

Electroabsorption Modulator/Laser Diode Driver

G52321-0, Rev 2.3

Page 7

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 6: Pin Identifications

NOTE: A voltage HIGH on the data input (pin 6) corresponds to a voltage HIGH on the data output (pin 22).

Pin #

Name

Type

Level

Description

1

GND

Pwr

Pwr

Positive Voltage Rail

2

GND

Pwr

Pwr

Positive Voltage Rail

3

NDIN

In

CML

Complementary Data In

4

GND

Pwr

Pwr

Positive Voltage Rail

5

GND

Pwr

Pwr

Positive Voltage Rail

6

DIN

In

CML

Data In

7

GND

Pwr

Pwr

Positive Voltage Rail

8

GND

Pwr

Pwr

Positive Voltage Rail

9

GND

Pwr

Pwr

Positive Voltage Rail

10

DCC

In

DC

Duty-Cycle Control Voltage

11

VSS

Pwr

Pwr

Negative Voltage Rail

12

VSS

Pwr

Pwr

Negative Voltage Rail

13

VIP

In

DC

Modulation Control Voltage

14

IP

In

DC

Modulation Current Monitor

15

IBN

In

DC

Data Offset Control Current (complementary)

16

GND

Pwr

Pwr

Positive Voltage Rail

17

GND

Pwr

Pwr

Positive Voltage Rail

18

GND

Pwr

Pwr

Positive Voltage Rail

19

NDOUT

Out

Laser Modulation Current Output (complementary)

20

GND

Pwr

Pwr

Positive Voltage Rail

21

GND

Pwr

Pwr

Positive Voltage Rail

22

DOUT

Out

Laser Modulation Current Output

23

GND

Pwr

Pwr

Positive Voltage Rail

24

GND

Pwr

Pwr

Positive Voltage Rail

25

GND

Pwr

Pwr

Positive Voltage Rail

26

IB

In

DC

Data Offset Control Current

27

GND

Pwr

Pwr

Positive Voltage Rail

28

GND

Pwr

Pwr

Positive Voltage Rail

29

VSS

Pwr

Pwr

Negative Voltage Rail

30

VSS

Pwr

Pwr

Negative Voltage Rail

31

GND

Pwr

Pwr

Positive Voltage Rail

32

GND

Pwr

Pwr

Positive Voltage Rail