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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 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.

Differential Output Slew Rate

SRQdiff

5

10

5

10

5

10

5

12

V/ns

Description: SR; Slew Rate
Q: Query Output (like in DQ, which stands for Data-in, Query-Output)
diff : Differential Signals
For Ron = RZQ/7 setting

Delta 

TFdiff

Delta 

TRdiff

V

OHdiff(AC)

V

OLdiff(AC)

O

D

iff

er

en

tial

 Out

put

 V

olt

ag

e(

i.e

. D

Q

S-

DQS)