Samsung M391B5273DH0, M391B5773DH0 specifications AC & DC Input Measurement Levels

Unbuffered DIMM

datasheet

Rev. 1.0

DDR3L SDRAM

11. AC & DC Input Measurement Levels

11.1 AC & DC Logic Input Levels for Single-ended Signals

[ Table 2 ] Single Ended AC and DC input levels for Command and Address

Symbol	Parameter	DDR3-800/1066/1333/1600		Unit	NOTE
		Min.	Max.
		1.35V
VIH.CA(DC90)	DC input logic high	VREF + 90	VDD	mV	1,5a)
VIL.CA(DC90)	DC input logic low	VSS	VREF - 90	mV	1,6a)
VIH.CA(AC160)	AC input logic high	VREF + 160	Note 2	mV	1,2
VIL.CA(AC160)	AC input logic low	Note 2	VREF - 160	mV	1,2
VIH.CA(AC135)	AC input logic high	VREF+135	Note 2	mV	1,2
VIL.CA(AC135)	AC input logic lowM	Note 2	VREF-135	mV	1,2
VREFCA(DC)	Reference Voltage for ADD,	0.49*VDD	0.51*VDD	V	3,4
	CMD inputs
		1.5V
VIH.CA(DC100)	DC input logic high	VREF + 100	VDD	mV	1,5b)
VIL.CA(DC100)	DC input logic low	VSS	VREF - 100	mV	1,6b)
VIH.CA(AC175)	AC input logic high	VREF + 175	Note 2	mV	1,2,7
VIL.CA(AC175)	AC input logic low	Note 2	VREF - 175	mV	1,2,8
VIH.CA(AC150)	AC input logic high	VREF+150	Note 2	mV	1,2,7
VIL.CA(AC150)	AC input logic low	Note 2	VREF-150	mV	1,2,8
VREFCA(DC)	Reference Voltage for ADD,	0.49*VDD	0.51*VDD	V	3,4
	CMD inputs

NOTE :

1.For input only pins except RESET, VREF = VREFCA(DC)

2.See "Overshoot and Undershoot specifications" section.

3.The AC peak noise on VREF may not allow VREF to deviate from VREF(DC) by more than ± 1% VDD (for reference : approx. ± 15mV)

4.For reference : approx. VDD/2 ± 15mV

5.VIH(dc) is used as a simplified symbol for VIH.CA(a) 1.35V : DC90, b) 1.5V : DC100)

6.VIL(dc) is used as a simplified symbol for VIL.CA(a) 1.35V : DC90, b) 1.5V : DC100)

7.VIH(ac) is used as a simplified symbol for VIH.CA(AC175) and VIH.CA(AC150); VIH.CA(AC175) value is used when VREF + 175mV is referenced and VIH.CA(AC150) value is used when VREF + 150mV is referenced.

8.VIL(ac) is used as a simplified symbol for VIL.CA(AC175) and VIL.CA(AC150); VIL.CA(AC175) value is used when VREF - 175mV is referenced and VIL.CA(AC150) value is used when VREF - 150mV is referenced.

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