Hynix 4GB PC3-12800 HMT351S6CFR8C-PB Manuel D’Utilisation

1. Used to define a differential signal slew-rate.
2. For CK - CK use VIH/VIL (ac) of AADD/CMD and VREFCA; for DQS - DQS, DQSL, DQSL, DQSU, DQSU use VIH/VIL 

(ac) of DQs and VREFDQ; if a reduced ac-high or ac-low levels is used for a signal group, then the reduced level 
applies also here.

3. These values are not defined; however, the single-ended signals Ck, CK, DQS, DQS, DQSL, DQSL, DQSU, DQSU 

need to be within the respective limits (VIH (dc) max, VIL (dc) min) for single-ended signals as well as the limita-
tions for overshoot and undershoot. Refer to "Overshoot and Undershoot Specifications" on page 26.

note : Rising input differential signal shall become equal to or greater than VIHdiff(ac) level and Falling 

input differential signal shall become equal to or less than VIL(ac) level.

V

IHdiff

Differential input high

+ 0.200

Note 3

V

1

V

ILdiff

Differential input logic low

Note 3

- 0.200

V

1

V

IHdiff (ac)

Differential input high ac

2 x (VIH (ac) - Vref)

Note 3

V

2

V

ILdiff (ac)

Differential input low ac

Note 3

2 x (VIL (ac) - Vref)

V

2

> 4.0

75

-

175

-

214

-

4.0

57

-

170

-

214

-

3.0

50

-

167

-

191

-

2.0

38

-

119

146

1.8

34

-

102

-

131

-

1.6

29

-

81

-

113

-

1.4

22

-

54

-

88

-

1.2

13

-

19

-

56

-

1.0

0

-

note

-

11

-

< 1.0

0

-

note

-

note

-