21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI49FCT20802/PI49FCT20803
1:5/1:7 2.5V Clock Buffer for
Networking Applications
Switching Waveforms
Propagation Delay
Pulse Skew – t
SK(P)
3V
3V
Input
t
PLH
t
PHL
V
OH
Output
1.5V
V
OL
t
SK(p)
= | t
PHL
– t
PLH
|
1.5V
0V
Input
t
PLH
t
PHL
2.0V
0.6V
1.25V
0V
V
OH
1.25V
V
OL
t
R
t
F
Output
Output Skew – t
SK(O)
3V
Input
t
PLHx
CLKx
t
SK(o)
CLKy
t
PLHy
t
SK(o)
=
t
PLHy
– t
PLHx
t
SK(o)
V
OH
1.5V
V
OL
t
PHLy
or
t
PHLy
– t
PHLx
t
PHLx
V
OH
1.5V
V
OL
1.5V
0V
Package Skew – t
SK(T)
3V
Input
t
PLH1
Package 1
Output
t
SK(t)
Package 2
Output
t
PLH2
t
SK(t)
t
PHL1
V
OH
1.5V
V
OL
V
OH
1.5V
V
OL
t
PHL2
1.5V
0V
t
SK(t)
=
t
PLH2
– t
PLH1
or
t
PHL2
– t
PHL1
5
PS8560A
09/27/04
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
