VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
VSC8021/VSC8022
Table 5: Power Dissipation
(Over recommended operating conditions, V
CC
= GND, outputs open circuit)
2.5Gb/s SONET-Compatible
8-Bit MUX/DEMUX Chipset
VSC8021
Parameter
I
EE
I
TT
P
D
VSC8022
Units
Conditions
Max
600
200
3.75
Description
Min
Power supply current from V
EE
Power supply current from V
TT
Power dissipation
Typ
400
110
2.3
Min
Typ
450
120
2.6
Max
600
200
3.75
mA
mA
W
Absolute Maximum Ratings
(1)
Power Supply Voltage (V
TT
) ..........................................................................................................-3.0V to + 0.5V
Power Supply Voltage (V
EE
) .................................................................................................. V
TT
+ 0.7V to -6.0V
ECL Input Voltage Applied
(2)
(V
ECLIN
) ........................................................................................-2.5V to + 0.5V
High-Speed Input Voltage Applied
(2)
(V
HSIN
)............................................................... V
EE
-0.7V to V
CC
+ 0.7V
Output Current (DC, output HIGH) (I
OUT
).................................................................................................-50 mA
Case Temperature Under Bias (T
C
)...............................................................................................-55ºC to +125ºC
Storage Temperature
(3)
(T
STG
)......................................................................................................-65ºC to +150ºC
Recommended Operating Conditions
ECL Power Supply Voltage
(4)
(V
TT
).................................................................................................. -2.0V
±
0.1V
Power Supply Voltage (V
EE
) ............................................................................................................ -5.2V
±
0.26V
Operating Temperature Range
(3)
(T)............................. (Commercial) 0ºC to +70ºC, (Industrial) -40ºC to +85ºC
Notes: (1) Caution: Stresses listed under “Absolute Maximum Ratings” may be applied to devices one at a time without causing perma-
nent damage. Functionality at or exceeding the values listed is not implied. Exposure to these values for extended periods may
affect device reliability.
(2) V
TT
must be applied before any input signal voltage magnitude
(V
ECLIN
and
V
HSIN
)
can be greater than
V
TT
-0.5V.
(3) Lower limit of specification is ambient temperature and upper limit is case temperature.
(4) When using internal ECL 100K reference level.
ESD Ratings
Proper ESD procedures should be used when handling this product. The VSC8021/VSC8022 is rated to the fol-
lowing ESD voltages based on the human body model:
1. All ECL pins are rated at or above 1000V.
2. All high-speed clock and data pins at rated at or above 500V.
G52028-0, Rev 4.1
05/25/01
©
VITESSE
SEMICONDUCTOR CORPORATION
• 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
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