HMT312S6BFR6C-G7 Datasheet, PDF(23/54 Page) Hynix Semiconductor – 204pin DDR3 SDRAM SODIMM

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HMT312S6BFR6C-G7 Datasheet, PDF (23/54 Pages) Hynix Semiconductor – 204pin DDR3 SDRAM SODIMM

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AC & DC Output Measurement Levels

Single Ended AC and DC Output Levels

Table below shows the output levels used for measurements of single ended signals.

Single-ended AC and DC Output Levels

Symbol

VOH(DC)

VOM(DC)

VOL(DC)

VOH(AC)

VOL(AC)

Parameter

DC output high measurement level (for IV curve linearity)

DC output mid measurement level (for IV curve linearity)

DC output low measurement level (for IV curve linearity)

AC output high measurement level (for output SR)

AC output low measurement level (for output SR)

DDR3-800, 1066,

1333 and 1600

0.8 x VDDQ

0.5 x VDDQ

0.2 x VDDQ

VTT + 0.1 x VDDQ

VTT - 0.1 x VDDQ

Unit Notes

V

V

V

V

1

V

1

Notes:

1. The swing of Â 1 x VDDQ is based on approximately 50% of the static single ended output high or low

swing with a driver impedance of 40Ê and an effective test load of 25Ê to VTT = VDDQ / 2.

Differential AC and DC Output Levels

Table below shows the output levels used for measurements of single ended signals.

Differential AC and DC Output Levels

Symbol

Parameter

DDR3-800, 1066,

1333 and 1600

Unit Notes

VOHdiff (AC) AC differential output high measurementlevel (for output SR)

VOLdiff (AC) AC differential output low measurement level (for output SR)

+ 0.2 x VDDQ

- 0.2 x VDDQ

V

1

V

1

Notes:

1. The swing of Â x VDDQ is based on approximately 50% of the static differential output high or low

swing with a driver impedance of 40Ê and an effective test load of 25Ê to VTT = VDDQ/2 at each of the

differential outputs.

Rev. 0.2 / Feb. 2010

23

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