Hynix HMT31GR7CFR4A-PBT8 Datasheet download pdf (Page 40)

Rev. 1.1 / May. 2013 40

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.

Notes:

1. The swing of ±0.1 x V

DDQ

is based on approximately 50% of the static single ended output high or low swing with

a driver impedance of 40Ω and an effective test load of 25Ω to V

= V

DDQ

/ 2.

Differential AC and DC Output Levels

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

Notes:

1. The swing of ±0.2 x V

DDQ

is based on approximately 50% of the static differential output high or low swing with

a driver impedance of 40

Ω and an effective test load of 25Ω to V

= V

DDQ

/2 at each of the differential outputs.

Single-ended AC and DC Output Levels

Symbol Parameter

DDR3L-800, 1066,

1333, 1600

Unit Notes

OH(DC)

DC output high measurement level (for IV curve linearity)

0.8 x V

DDQ

OM(DC)

DC output mid measurement level (for IV curve linearity)

0.5 x V

DDQ

OL(DC)

DC output low measurement level (for IV curve linearity)

0.2 x V

DDQ

OH(AC)

AC output high measurement level (for output SR)

+ 0.1 x V

DDQ

OL(AC)

AC output low measurement level (for output SR)

- 0.1 x V

DDQ

Differential AC and DC Output Levels

Symbol Parameter

DDR3L-800, 1066,

1333, 1600

Unit Notes

OHdiff (AC)

AC differential output high measurement level (for output SR)

+ 0.2 x V

DDQ

OLdiff (AC)

AC differential output low measurement level (for output SR)

- 0.2 x V

DDQ

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 75 76

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Hynix HMT31GR7CFR4A-PBT8 Datasheet Page 40

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