VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Data Sheet

VSC7937

Single Supply 2.5Gb/s Voltage Driver

Page 8

G52200-0, Rev 3.0

03/05/01

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

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

Internet: www.vitesse.com

Package Pin Information

Table 6: Pin Identifications

NOTE: (1) Applicable to 32-pin TQFP package only

Signal

Type

Level

# Pins

Description

DIN, NDIN

In

2

Data Input and Data Reference

DINTERM

Ref

DC

1

Data Termination

CLK, NCLK

In

2

Clock Input and Clock Reference

CLKTERM

Ref

DC

1

Clock Termination

NOUT

Out

1

Modulation Current Output (complementary)

OUT

Out

1

Modulation Current Output (to Laser Cathode)

VSS

Pwr

Pwr

2

Negative Voltage Rail

GND

Pwr

Pwr

6/14

(1)

Positive Voltage Rail

VIP

In

DC

1

Modulation Control Node

MIP

In

DC

1

Modulation Monitor Node

VIB1, 2

In

DC

2

Bias Control Node

MIB1, 2

In

DC

2

Bias Monitor Node

DCC

In

DC

1

Duty Cycle Control

SEL

In

DC

1

Clk/Non-clk Data Select

Total Pins

24/32

(1)