w9425g6dh Winbond Electronics Corp America, w9425g6dh Datasheet - Page 28

• Manufacturer Part Number: w9425g6dh
• Description: 4m X 4 Banks X 16 Bits Ddr Sdram
• Manufacturer: Winbond Electronics Corp America

9.7
Notes:
Input High Voltage (AC)
Input Low Voltage (AC)
Input Reference Voltage
Termination Voltage
Differential Clock Input Reference Voltage
Input Difference Voltage. CLK and CLK Inputs (AC)
Output Timing Measurement Reference Voltage
V
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10) Transition times are measured between V
SWING (MAX)
AC Test Conditions
Conditions outside the limits listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
All voltages are referenced to V
Peak to peak AC noise on V
V
V
The values of I
The values of I
These parameters depend on the cycle rate and these values are measured at a cycle rate with the minimum values
of t
V
equal to V
These parameters depend on the output loading. Specified values are obtained with the output open.
slope.
OH
OH
TT
CK
is not applied directly to the device. V
= 1.95V, V
= 1.9V, V
and t
SLEW = (V
REF
RC
.
OL
T
and must track variations in the DC level of V
OH(DC)
OL(DC)
OL
= 0.4V
IH
= 0.35V
PARAMETER
min (AC) - V
is based on V
V
is based on V
V
DD
SS
Q
REF
IL
max (AC)) /
SS
may not exceed ±2% V
T
, V
DDQ
DDQ
SSQ.(
Output
= 2.3V and V
= 2.3V and V
TT
2.6V±0.1V for DDR400/DDR500
IH min(AC)
T
is a system supply for signal termination resistors is expected to be set
V
V
V
IH
REF
IL
max (AC)
min (AC)
and V
TT
TT
- 28 -
= 1.11V.
= 1.19V.
REF(DC).
IL max(AC)
REF
Output
V(out)
.
.Transition (rise and fall) of input signals have a fixed
SYMBOL
V
V
V
ID (AC)
V
V
V
V
OTR
REF
TT
IH
IL
R
Publication Release Date:Feb. 12, 2008
)
Timing Reference Load
V
V
0.5 x V
0.5 x V
0.5 x V
REF
REF
V
VALUE
W9425G6DH
x
1.5
(AC)
+ 0.31
- 0.31
DDQ
DDQ
DDQ
VTT
Revision A8
30pF
50 Ω
UNIT
V
V
V
V
V
V
V