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HD74CDCV857 查看數據表(PDF) - Renesas Electronics
零件编号
产品描述 (功能)
生产厂家
HD74CDCV857
2.5-V Phase-lock Loop Clock Driver
Renesas Electronics
HD74CDCV857 Datasheet PDF : 13 Pages
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11
12
13
HD74CDCV857
Yx, FBOUT
Yx
,
FBOUT
t
half cycle n
t
half cycle n+1
t
HCC
= t
half cycle n
- t
half cycle n+1
Figure 8 Half cycle to cycle jitter
V
DDQ
AV
CC
Device
under
OUT
test
OUT
AGND
GND
V
DDQ
/2
AV
CC
/2
Z = 60
Ω
Z = 60
Ω
-V
DDQ
/2
C=
14 pF
-V
DDQ
/2
C=
14 pF
-V
DDQ
/2
R
T
=
10
Ω
R
T
=
10
Ω
Z = 50
Ω
Z = 50
Ω
V
DDQ
AV
CC
Device
under
OUT
test
V
DDQ
AV
CC
Z = 60
Ω
OUT
AGND
GND
Z = 60
Ω
R
T
=
120
Ω
C=
14 pF
C=
14 pF
Figure 9 Output load test circuit
Oscillo
scope
R
T
=
50
Ω
R
T
=
50
Ω
Rev.7.00, Oct.09.2003, page 11 of 12
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