Hynix HMT351R7BFR8A-H9T8 User Manual
Rev. 1.2 / Dec. 2011
42
Differential Output Slew Rate
With the reference load for timing measurements, output slew rate for falling and rising edges is defined
and measured between VOLdiff (AC) and VOHdiff (AC) for differential signals as shown in table and figure
below.
below.
Differential Output slew Rate Definition
Differential Output Slew Rate Definition
Description
Measured
Defined by
From
To
Differential output slew rate for rising edge
V
OLdiff (AC)
V
OHdiff (AC)
[V
OHdiff (AC)
-V
OLdiff (AC)
] / DeltaTRdiff
Differential output slew rate for falling edge
V
OHdiff (AC)
V
OLdiff (AC)
[V
OHdiff (AC)
-V
OLdiff (AC)
] / DeltaTFdiff
Notes:
1. Output slew rate is verified by design and characterization, and may not be subject to production test.
1. Output slew rate is verified by design and characterization, and may not be subject to production test.
Differential Output Slew Rate
DDR3L-800
DDR3L-1066
DDR3L-1333
Units
Parameter
Symbol
Min
Max
Min
Max
Min
Max
Differential Output Slew Rate
SRQdiff
3.5
12
3.5
12
3.5
12
V/ns
Description: SR; Slew Rate
Q: Query Output (like in DQ, which stands for Data-in, Query-Output)
se: Single-ended Signals
For Ron = RZQ/7 setting
Q: Query Output (like in DQ, which stands for Data-in, Query-Output)
se: Single-ended Signals
For Ron = RZQ/7 setting
Delta
TFdiff
Delta
TRdiff
vOHdiff(AC)
vOLdiff(AC)
O
Di
ff
ere
nt
ia
l Ou
tp
ut Vo
lta
ge
(i
.e. DQS
-DQS
)
Differential Output Slew Rate Definition