VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
125MHz Octal Deskew
VSC6280/81/82
AC Timing Characteristics
Parameter
Description
Min
Typ
Max
Units
Propagation Delays
Zero Delay (00000000000)
See Figure 7
TPDMIN
2.5
3.7
ns
Propagation Delays
Max Delay (11111111111)
See Figure 7
(1)
TPDRSPAN
7.7
7.7
8.3
8.3
ns
ns
Propagation Delays
Max Delay (11111111111)
See Figure 7
(1)
TPDFSPAN
TRES
DNL
Variable Delay Element Resolution LSB
6
10
20
ps
ps
Variable Delay Element Differential Nonlinearity
(Maximum Hole Size)
TPWI
TPWO
fRCK
Input Pulse Width
750
750
ps
ps
Output Pulse Width
Reference Clock Frequency
62.5
MHz
ps
DTPD
Variation in Delay Versus Pulse Width (TPW > 750 ps)
Variation in Delay Versus Duty Cycle and Frequency
Variation in Delay vs Temperature
Power Supply Rejection Ratio
±20
DCV
±40
10
ps
DTCO
PSRR
6
ps/C°
ps/100mV
ps
9
15
TR/TF
TREFIRE
Output Rise Fall Times (20% to 80%)
Adjacent Edge Spacing. See Figure 8.
200
400
TPDSPAN +2ns
ns
Note: 1) TPD SPAN ≤ TREFIRE - 2ns. See Figure 8
.
Figure 7: AC Timing Diagram
INPUT
TPWI
TREFIRE
TPDR MIN
OUTPUT
(Delay = 00000000000)
TPDF MIN
TPDR SPAN
TPDF SPAN
OUTPUT
(Delay = 11111111111)
TPWO
G52153-0, Rev. 2.2
8/5/98
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Page 7
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