PI49FCT20802/PI49FCT20803
1:5/1:7 2.5V Clock Buffer for
NetworkingApplications
SwitchingWaveforms
PropagationDelay
Pulse Skew – t
SK(P)
3V
3V
Input
Input
1.5V
0V
1.25V
0V
tPLH
tPHL
t
t
PHL
PLH
VOH
1.5V
VOL
V
OH
2.0V
0.6V
Output
1.25V
Output
V
OL
t
t
F
R
tSK(p) = | tPHL – tPLH
|
Package Skew – t
OutputSkew–t
SK(T)
SK(O)
3V
3V
Input
1.5V
0V
Input
1.5V
0V
t
PLHx
t
PHLx
t
t
PHL1
PLH1
V
V
OH
OH
Package 1
Output
CLKx
CLKy
1.5V
1.5V
V
V
V
V
OL
OL
t
t
t
SK(t)
SK(t)
t
SK(o)
SK(o)
OH
OH
Package 2
Output
1.5V
1.5V
V
PHL2
OL
V
OL
t
t
PLH2
t
t
PLHy
tSK(o)
PHLy
tSK(t)
= tPLH2 – tPLH1 or tPHL2 – tPHL1
=
tPLHy – tPLHx or tPHLy – tPHLx
PS8560A
09/27/04
5