VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
VSC8114
AC Characteristics
Table 7: PECL and TTL Outputs
Parameter
T
R,TTL
T
F,TTL
T
R,PECL
T
F,PECL
Description
TTL Output Rise Time
TTL Output Fall Time
PECL Output Rise Time
PECL Output Fall Time
ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux
with Integrated Clock Generation and Clock Recovery
Min
—
—
—
—
Typ
2
1.5
350
350
Max
—
—
—
—
Units
ns
ns
ps
ps
Conditions
10-90%
10-90%
20-80%
20-80%
DC Characteristics
Table 8: PECL and TTL Inputs and Outputs
Parameter
V
OH
V
OL
V
OCM
∆
V
OUT75
∆
V
OUT50
Description
Output HIGH
voltage (PECL)
Output LOW
voltage (PECL)
O/P Common
Mode Range
(PECL)
Differential Output
Voltage (PECL)
Differential Output
Voltage (PECL)
Input HIGH voltage
(PECL)
Input LOW voltage
(PECL)
Differential Input
Voltage (PECL)
I/P Common Mode
Range (PECL)
Output HIGH
voltage (TTL)
Output LOW
voltage (TTL)
Input HIGH voltage
(TTL)
Min
—
0.7
Typ
—
—
Max
V
DDP
– 0.9V
—
Units
V
V
Conditions
—
—
—
75
Ω
to V
DDP
– 2.0V
50
Ω
to V
DDP
– 2.0V
For single ended
For single ended
—
—
I
OH
= -1.0 mA
I
OL
= +1.0 mA
—
1.1
—
V
DDP
– 1.3V
V
600
600
V
DDP
– 0.9V
0
400
1.5 –
∆
V
IN
/2
2.4
—
2.0
—
—
—
—
—
—
—
—
—
1300
1300
V
DDP
– 0.3V
V
DDP
– 1.72V
1600
mV
mV
V
V
mV
V
V
V
V
V
IH
V
IL
∆
V
IN
V
ICM
V
OH
V
OL
V
IH
V
DDP
– 1.0 –
∆
V
IN
/2
—
0.5
5.5
G52185-0, Rev 4.0
11/1/99
©
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Page 11
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