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W9425G6JH
10.7 AC Test Conditions
PARAMETER
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 DD Q
SYMBOL
V IH
V IL
V REF
V TT
V R
V ID (AC)
V OTR
VALUE
V REF + 0.31
V REF - 0.31
0.5 x V DDQ
0.5 x V DDQ
V x (AC)
1.5
0.5 x V DDQ
VTT
UNIT
V
V
V
V
V
V
V
V IH min (AC)
V SWING (MAX)
V SS
V REF
V IL max (AC)
50 Ω
T
T
Output
Output
V(out)
30pF
SLE W = (V IH min (AC) - V IL max (AC)) / T
Timing Reference Load
Notes:
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
Conditions outside the limits listed under “Absolute Maximum Ratings” may cause permanent damage to the device .
All voltages are referenced to V SS , V SSQ.
Peak to peak AC noise on V REF may not exceed ±2% V REF(DC).
V OH = 1.95V, V OL = 0.35V
V OH = 1.9V, V OL = 0.4V
The values of I OH(DC) is based on V DDQ = 2.3V and V TT = 1.19V.
The values of I OL(DC) is based on V DDQ = 2.3V and V TT = 1.11V.
These parameters depend on the cycle rate and these values are measured at a cycle rate with the minimum values
of t CK and t RC .
V TT is not applied directly to the device. V TT is a system supply for signal termination resistors is expected to be set
equal to V REF and must track variations in the DC level of V REF .
These parameters depend on the output loading. Specified values are obtained with the output open.
(10) Transition times are measured between V IH min(AC) and V IL max(AC) .Transition (rise and fall) of input signals have a fixed
slope.
(11) IF the result of nominal calculation with regard to t CK contains more than one decimal place, the result is rounded up to
the nearest decimal place.
(i.e., t DQSS = 1.25 ? t CK , t CK = 5 nS, 1.25 ? 5 nS = 6.25 nS is rounded up to 6.2 nS.)
Publication Release Date: Aug. 27, 2013
- 27 -
Revision A03
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