VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
2.488Gb/s SONET/SDH
STS-48/STM-16 Section Terminator
VSC8151
DC Characteristics
Table 15: High-Speed Differential ECL Inputs and Outputs (HSECL)
Parameter
Description
Min
Typ
Max
Units
Conditions
Data Output differential
voltage
(Peak to Peak, Single-ended)
Load = 100 Ohms
across TXSOUT+/– at
load
VODATA
550
-
1200
mV
Clock Output differential
voltage
(Peak to Peak, Single-ended)
Load = 100 Ohms
across TXCLKOUT+/–
at load
VOCLK
450
-
1200
mV
Output common-mode
voltage
Load = 100 Ohms
across diff pair
VOCM
RO
2100
40
-
-
-
3000
60
mV
ohms
mV
Output Impedance
Guaranteed, not tested.
AC Coupled, internally
biased to VTTL/2
VID
Input differential voltage
450
Table 16: TTL Inputs and Outputs
Parameter
Description
Output HIGH voltage
Min
Typ
Max
Units Conditions
VOH
VOL
VIH
VIL
IIH
2.4
0
-
-
-
-
-
-
-
V
V
IOH = -8mA
IOL = 8mA
—
Output LOW voltage
Input HIGH voltage
Input LOW voltage
Input HIGH current
Input LOW current
0.4
2.0
0
VTTL + 1.0V
V
0.8
500
-
V
—
-
uA
uA
VIN = 2.4V
VIN = 0.4V
IIL
-50
Table 17: Power Supply Currents (+2V/+3.3V Supplies, Outputs Open)
Parameter
Description
(Max)
Units
ITTL
IMM
PD
Power supply current from VTTL
Power supply current from VMM
Power dissipation
380
1100
3.6
mA
mA
W
G52225-0, Rev. 2.3
8/16/99
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Page 19
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