VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
SONET/SDH 10.7Gb/s
Laser Diode Driver
VSC7990
Table 5: MUX Select Logic Table
SEL
Mode Select
VSS
GND (VDD
N/C
Clocked Data In
)
Unclocked Data In
Unclocked Data In
Table 6: MOD_EN Logic Table
Mode Select
SEL
VSS
Modulation Current Enabled
Modulation Current Disabled
GND (VDD
)
Absolute Maximum Ratings(1)
Negative Power Supply Voltage (V )...........................................................................................................-6.0V
SS
All Pins ..............................................................................................................................................V to + 0.5V
SS
Supply Voltage (V ) .....................................................................................................................................-6.0V
SS
Supply Current (I ).................................................................................................................................... 300mA
SS
Input Voltage (V ).............................................................................................................................V to +0.5V
IN
SS
Modulation Control Voltage (V )......................................................................................................V to +0.5V
IP
SS
Maximum Junction Temperature Range ......................................................................................-55°C to +125°C
Storage Temperature Range .........................................................................................................-65°C to +150°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 (GND, V )..................................................................................................................... 0V
DD
Negative Voltage Rail (V ).............................................................................................................-5.5V to -4.9V
SS
Junction Temperature Operating Range (T )................................................................................... 0°C to +125°C
J
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
G52303-0, Rev 2.2
04/05/01
Page 3
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
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