Data Sheet
VSC8114
VITESSE
SEMICONDUCTOR CORPORATION
ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux
with Integrated Clock Generation and Clock Recovery
AC Characteristics
Table 7: PECL and TTL Outputs
Parameter
TR,TTL
TF,TTL
TR,PECL
TF,PECL
Description
TTL Output Rise Time
TTL Output Fall Time
PECL Output Rise Time
PECL Output Fall Time
Min Typ Max Units
Conditions
—
2
—
ns 10-90%
—
1.5
—
—
350
—
—
350
—
ns 10-90%
ps 20-80%
ps 20-80%
DC Characteristics
Table 8: PECL and TTL Inputs and Outputs
Parameter
Description
Min
Typ
Max
Units
Conditions
VOH
Output HIGH
voltage (PECL)
—
—
VDDP – 0.9V
V—
VOL
Output LOW
voltage (PECL)
0.7
—
—
V—
VOCM
O/P Common
Mode Range
(PECL)
1.1
—
VDDP – 1.3V
V—
∆VOUT75
Differential Output
Voltage (PECL)
600
—
1300
mV 75Ω to VDDP – 2.0V
∆VOUT50
Differential Output
Voltage (PECL)
600
—
1300
mV 50Ω to VDDP – 2.0V
VIH
Input HIGH voltage
(PECL)
VDDP – 0.9V —
VDDP – 0.3V
V For single ended
VIL
Input LOW voltage
(PECL)
0
—
VDDP – 1.72V
V For single ended
∆VIN
Differential Input
Voltage (PECL)
400
—
1600
mV —
VICM
I/P Common Mode
Range (PECL)
1.5 – ∆VIN/2
—
VDDP – 1.0 – ∆VIN/2
V—
VOH
Output HIGH
voltage (TTL)
2.4
—
—
V IOH = -1.0 mA
VOL
Output LOW
voltage (TTL)
—
—
0.5
V IOL = +1.0 mA
VIH
Input HIGH voltage
(TTL)
2.0
—
5.5
V—
G52185-0, Rev 4.0
11/1/99
© VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
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