VITESSE

SEMICONDUCTOR CORPORATION

Advance Product Information

VSC7959

3.125Gb/s CML Limiting Amplifier with LOS Detect

G52358-0, Rev 2.0

Page 3

02/09/01

© 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 3: Loss of Signal Specifications

Table 4: Loss of Signal Truth Table

Maximum Junction Temperature Range .........................................................................................................TBD

NOTE: (1) CAUTION: Stresses listed under “Absolute Maximum Ratings” may be applied to devices one at a time without caus-

ing permanent damage. Functionality at or above the values listed is not implied. Exposure to these values for extended

periods may affect device reliability.

Recommended Operating Conditions

Symbol

Parameter

Min

Typ

Max

Units

Conditions

LOS Hystersis

3.1

3.3

5.5

dB

LOS Assert/Deassert Time

0.22

0.25

0.28

µs

LOS Assert Threshold

8.2

mV

12.8

19.8

21.8

mV

57.2

mV

LOS Deassert Threshold

11.4

mV

26.2

29.0

31.6

mV

75.2

mV

LOS Output HIGH Voltage

3.3

V

LOS Output LOW Voltage

0.168

V

SQUELCH

LOS

Output

High

Low

Off

Low

High

On

High

Low

On

Low

Low

On