VSC7939RP datasheet(4/18 Pages) VITESSE

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VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Data Sheet

VSC7939

SONET/SDH 3.125Gb/s

Laser Diode Driver with Automatic Power Control

Page 4

G52350-0, Rev 3.2

02/26/01

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

Internet: www.vitesse.com

Absolute Maximum Ratings(1)

Power Supply Voltage (VCC)............................................................................................................. -0.5V to +7V

Current into BIAS.....................................................................................................................-20mA to +150mA

Current into OUT+, OUT- ...............................................................................................................................TBD

Current into MD ............................................................................................................................. -5mA to +5mA

Current into FAIL ......................................................................................................................... -10mA to 30mA

Voltage at DATA+, DATA-, CLK+, CLK-, ENABLE, LATCH......................................... -0.5V to (VCC + 0.5V)

Voltage at APCFILT, MODSET, BIASMAX, APCSET, MD, FAIL ............................................. -0.5V to +3.0V

Voltage at OUT+, OUT- ..................................................................................................... -0.5V to (VCC + 1.5V)

Voltage at BIAS .................................................................................................................. -0.5V to (VCC + 0.5V)

Continouous Power Dissipation (TA = +85°C, TQFP derate 20.8mW/°C above +85°C) .......................1350mW

Operating Junction Temperature Range ...................................................................................... -55°C to +150°C

Storage Temperature Range ........................................................................................................ -65°C to +165°C

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

Positive Voltage Rail (VCC)..................................................................................................... +3.135V to +5.25V

Negative Voltage Rail (GND) ............................................................................................................................0V

Modulation Current (IMOD)

(1) .......................................................................................................................30mA

Ambient Temperature Range (TA)................................................................................................. -40°C to +85°C

NOTE:

(1) VCC = 3.3V, IBIAS = 60mA.

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