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VSC7938 Fiches technique(PDF) 3 Page - Vitesse Semiconductor Corporation

No de pièce VSC7938
Description  Laser Diode Driver with Automatic Power Control
Download  16 Pages
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Fabricant  VITESSE [Vitesse Semiconductor Corporation]
Site Internet  http://www.vitesse.com
Logo VITESSE - Vitesse Semiconductor Corporation

VSC7938 Fiches technique(HTML) 3 Page - Vitesse Semiconductor Corporation

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VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7938
SONET/SDH 3.125Gb/s
Laser Diode Driver with Automatic Power Control
G52349-0, Rev 3.0
Page 3
01/20/01
© 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: PECL and TTL/CMOS Inputs and Outputs Specifications
Absolute Maximum Ratings(1)
Power Supply Voltage (VCC)............................................................................................................... -0.5V to 6V
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, SLWSTRT.......................... -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.
Symbol
Parameter
Min
Typ
Max
Units
Conditions
VID
Differential Input Voltage
100
1600
mVp-p
(DATA+)-(DATA-)
VICM
Common-Mode Input Voltage
VCC -
1.49
VCC -
1.32
VCC -
VID/4
V
PECL Compatible
IIN
Clock and Data Input Current
-1
10
µA
VIH
TTL Input High Voltage
(ENABLE, LATCH)
2.0
V
VIL
TTL Input Low Voltage
(ENABLE, LATCH)
0.8
V
TTL Output High Voltage (FAIL)2.4
VCC -
0.3
VCC
V
Sourcing 50µA
TTL Output Low Voltage (FAIL)
0.1
0.44
V
Sinking 100µA


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