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HD74CDCV857 View Datasheet(PDF) - Hitachi -> Renesas Electronics
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Description
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HD74CDCV857
2.5-V Phase-lock Loop Clock Driver
Hitachi -> Renesas Electronics
HD74CDCV857 Datasheet PDF : 13 Pages
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HD74CDCV857
Differential clock outputs are directly terminated by a 120
Ω
resistor. Figure 2 is typical usage conditions
of outputs load.
V
DDQ
Device
under
OUT
test
OUT
V
DDQ
R
T
=
120
Ω
C = 14 pF
C = 14 pF
Figure 2 Differential signal using direct termination resistor
CLKIN
CLKIN
FBIN
FBIN
t
SPE
Figure 3 Static phase offset
FBOUT
FBOUT
Yx
Yx
t
sk
Yx
Yx
Yx’
Yx'
t
sk
Figure 4 Output skew
9
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