HD74CDCV857 View Datasheet(PDF) - Hitachi -> Renesas Electronics
Part Name
Description
MFG CO.
'HD74CDCV857' PDF : 13 Pages View PDF
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
AVCC
Device
under OUT
test
OUT
AGND
GND
VDDQ /2
AVCC/2
Z = 60 Ω
Z = 60 Ω
-VDDQ /2
C=
14 pF
-VDDQ /2
C=
14 pF
-VDDQ /2
RT=
10 Ω
RT=
10 Ω
Z = 50 Ω
Z = 50 Ω
Oscillo
scope
RT=
50 Ω
RT=
50 Ω
V DDQ
AVCC
Device
under OUT
test
VDDQ
AVCC
Z = 60 Ω
OUT
AGND
GND
Z = 60 Ω
RT=
120 Ω
C=
14 pF
C=
14 pF
Figure 9 Output load test circuit
11
Share Link: 
