w942508bh Winbond Electronics Corp America, w942508bh Datasheet - Page 12

• Manufacturer Part Number: w942508bh
• Manufacturer: Winbond Electronics Corp America

(8)
(9)
(10) Transition times are measured between V
(11) IF the result of nominal calculation with regard to t
(12) V
(13) V
(14) V
(15) Refer to the figure below.
(16) t
V
equal to V
These parameters depend on the output loading. Specified values are obtained with the output open.
a fixed slope.
the nearest decimal place.
(i.e., t
AC
TT
X
ID
ISO
is the differential clock cross point voltage where input timing measurement is referenced.
and t
is magnitude of the difference between CLK input level and CLK input level.
is not applied directly to the device. V
means {V
DQSS
DQSCK
REF
= 0.75
0 V Differential
and must track variations in the DC level of V
ICK
depend on the clock jitter. These timing are measured at stable clock.
(CLK)+V
V
t
CK
ID(AC)
CLK
CLK
V
V
V
ISO
SS
, T
SS
ck
V
ICK
ICK
= 7.5 nS, 0.75
V
( CLK )}/2.
X
V
ISO(min)
TT
IH
V
V
is a system supply for signal termination resistors, is expected to be set
min.(AC) and V
7.5 nS = 5.625 nS is rounded up to 5.6 nS.)
ICK
X
CK
- 12 -
contains more than one decimal place, the result is rounded up to
V
X
REF
IL
max.(AC).Transition (rise and fall) of input signals have
.
V
ISO(max)
V
ICK
V
X
V
ICK
W942508BH
V
X
V
ID(AC)