© VITESSE SEMICONDUCTOR CORPORATION

Page 7

11/9/99

741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896

VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Datasheet

VSC8131

2.488 Gbit/sec

32:1 SONET/SDH Mux with Clock Generator

G52249-0, Rev. 3.0

DC Characteristics

Parameters

Description

Min

Typ

Max

Units

Conditions

Output HIGH voltage (DO)

V

50 Ohm Termination

Output LOW voltage (DO)

—

V

50 Ohm Termination

∆V

OD(DO)

Output differential voltage

(DO)

550

850

1200

mV

100 Ohm

Termination between

DO

Output common mode voltage

2.10

-

3.00

V

100 Ohm

Termination between

DO

Output HIGH voltage (CO)

—

V

50 Ohm Termination

Output LOW voltage (CO)

—

V

50 Ohm Termination

∆V

OD(CO)

Output differential voltage

(CO)

500

850

1200

mV

100 Ohm

Termination between

CO

Output common mode voltage

2.10

-

3.00

V

100 Ohm

Termination between

CO

Back Termination Impedance

(DO, CO)

40

60

Ohm

Guaranteed, not

tested

Input HIGH voltage

(LVPECL)

1.5

-

V

Input LOW voltage (LVPECL)

0

-

-

V

∆V

IN

Differential Input voltage

(LVPECL)

400

1600

mV

Input Common Mode Range

(LVPECL)

1.5-

IN/2

VCC-1.0-

IN/2

V

Output HIGH voltage (TTL)

2.4

V

Output LOW voltage (TTL)

0.5

V

Input HIGH voltage (TTL)

2.0

5.5

V

Input LOW voltage (TTL)

0.0

0.8

V

Input HIGH Current (TTL)

500

uA

Input LOW Current (TTL)

-500

uA

Supply voltage

3.14

—

3.47

V

3.3V

Power dissipation

—

1.7

2.15

W

Outputs open,

Supply Current

—495

620

mA

Outputs open,