Hynix HMT31GR7CFR4A-PBT8 Datasheet download pdf (Page 42)

Rev. 1.1 / May. 2013 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.

Differential Output slew Rate Definition

Differential Output Slew Rate Definition

Description

Measured

Defined by

From To

Differential output slew rate for rising edge

OLdiff (AC)

OHdiff (AC)

-V

OLdiff (AC)

] / DeltaTRdiff

Differential output slew rate for falling edge

OHdiff (AC)

OLdiff (AC)

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.

Differential Output Slew Rate

DDR3L-800 DDR3L-1066 DDR3L-1333 DDR3L-1600

Units

Parameter Symbol Min Max Min Max Min Max Min Max

Differential Output Slew Rate SRQdiff 3.5 12 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

Delta

TFdiff

Delta

TRdiff

OHdiff(AC)

VOLdiff(AC)

Differential Output Voltage(i.e. DQS-DQS)

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 75 76

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Hynix HMT31GR7CFR4A-PBT8 Datasheet Page 42