VSC8021FC VITESSE [Vitesse Semiconductor Corporation], VSC8021FC Datasheet - Page 6

• Manufacturer Part Number: VSC8021FC
• Description: 2.5Gb/s SONET-Compatible 8-Bit MUX/DEMUX Chipset
• Manufacturer: VITESSE [Vitesse Semiconductor Corporation]

Page 6
2.5Gb/s SONET-Compatible
8-Bit MUX/DEMUX Chipset
Table 2: VSC8022 Demultiplexer AC Characteristics
NOTE: (1) If t
DC Characteristics
Table 3: Low Speed ECL Inputs and Outputs
(
Note: Differential ECL output pins must be terminated identically.
Table 4: High-Speed Inputs and Outputs
(Over recommended operating conditions, V
NOTES: (1) A reference generator is built in to each high-speed input, and these inputs are designed to be AC-coupled.
Parameter
t
t
t
t
t
t
t
Phase
Margin
Over recommended operating range with internal V
Parameter
V
V
V
V
Parameter
V
V
C
D
BD
DFP
PFP
OOFN
OOFNPW
V
V
V
V
OH
OL
IH
IL
OH
OL
OUT
IN
OUT(DATA)
OUT(clk)
(2) If a high-speed input is used single-ended, a 150pF capacitor must be connected between the unused high-speed or comple-
(3) Differential high-speed outputs must be terminated identically.
ment input and the power supply (V
C
Clock period
BYTE clock period (t
BYTE clock output to valid data
FP rising edge from parallel data output
change from A1 to A2 (t
FP pulse width (t
OOFN falling edge before A1 chan
ges to A2 (t
OOFN pulse width (t
Serial data phase timing margin with respect
to high-speed clock:
Output HIGH voltage
Output LOW voltage
Input HIGH voltage
Input LOW voltage
Output voltage swing
changes, all the remaining parameters change as indicated by the equations.
Phase Margin =
Input voltage swing
Output HIGH voltage
Output LOW voltage
Output voltage swing for data
Output voltage swing for clock
OOFN
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
(1)
Description
Description
Description
PFP
= t
Tel: (800) VITESSE • FAX: [phone] • Email: [e-mail]
1
D
= t
OOFNPW
–
D
x 4)
t
------------------ -
= t
D
VITESSE
SU
DFP
SEMICONDUCTOR CORPORATION
)
t
C
CC
+
C
TT
x 8) (framed)
= t
t
).
= GND, Output load = 50 to -2.0V)
H
= t
REF,
D
360
)
D
)
V
CC
= GND, output load = 50 to -2.0V)
Internet: www.vitesse.com
-1020
-1150
Min
V
V
Min
0.8
0.8
0.6
0.6
Min
TT
TT
12.8
400
135
3.2
0.5
3.2
3.2
Typ
1.0
Typ
-0.9
-1.8
1.0
0.8
0.7
Typ
180
1.0
3.2
-1620
-1500
Max
-700
-600
Max
1.4
1.2
1.2
1.2
Max
2.0
Units
Units
VSC8021/VSC8022
degrees
mV
mV
mV
mV
Units
V
V
V
V
V
V
ps
ns
ns
ns
ns
ns
ns
AC-coupled
Output load, 50 to -2.0V
Output load, 50 to -2.0V
Output load, 50 to -2.0V
Output load, 50 to -2.0V
V
Guaranteed HIGH signal for
all inputs
Guaranteed LOW signal for
all inputs
V
Output load 50 to V
IN
IN
= V
= V
IH
IH
Conditions
Conditions
Conditions
(max) or V
(max) or V
Data Sheet
G52028-0, Rev 4.1
IL
IL
TT
(min)
(min)
05/25/01