Table 68: Derating Values for tDS/tDH – AC135/DC100-Based at 2V/ns
Shaded cells indicate slew rate combinations not supported
ΔtDS, ΔtDH Derating (ps) – AC/DC-Based
DQS, DQS# Differential Slew Rate
4.0 V/ns 3.0 V/ns 2.0 V/ns 1.8 V/ns
8.0 V/ns
7.0 V/ns
6.0 V/ns
5.0 V/ns
1.6 V/ns
1.4 V/ns
1.2 V/ns
1.0 V/ns
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
Δ
tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.4
34
29
23
25
21
17
34
29
23
14
25
21
17
10
34
29
23
14
0
25
21
17
10
0
29
23
14
0
21
17
10
0
23
14
0
17
10
0
14
0
10
0
0
0
–23 –17 –23 –17 –23 –17 –23 –17 –15 –19
–68 –50 –68 –50 –68 –50 –60 –42 –52 –34
–66 –54 –66 –54 –58 –46 –50 –38 –42 –30
–64 60 –56 –52 –48 –40 –40 –36 –32 –26
–53 –59 –45 –51 –37 –43 –29 –33 –21 –17
–43 –61 –35 –53 –27 –43 –19 –27
–39 –66 –31 –56 –23 –40
–38 –76 –30 –60