VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Data Sheet

VSC7928

SONET/SDH 3.2Gb/s Laser Diode Driver

Page 4

G52246-0, Rev 3.0

04/05/01

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

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

Internet: www.vitesse.com

Figure 1: On-Chip Data and Clock Input Configuration

Figure 2: Single-Ended Operation

(NCLK)

NDIN

(CLKTERM)

DINTERM

(CLK)

DIN

VSS

VSS

GND

GND

50

50

4.0K

6.4K

DINTERM to -2.0V for Differential ECL Inputs

DATA BUFFER

(CLOCK BUFFER)

X

X

X

*

*

*

*

*On-chip

Components

0.1µf

0.1µf

0.1µf

0.1µf

GND

NCLK

CLK

NDIN

DINTERM

DIN

7928

DATA

SOURCE

CLOCK

SOURCE

GND

GND

CLKTERM

GND

0.1µf

0.1µf