Samsung M391B5773DH0, M391B5273DH0 specifications VIH.DQDC90

Unbuffered DIMM

datasheet

Rev. 1.0

DDR3L SDRAM

[ Table 3 ] Single Ended AC and DC input levels for DQ and DM

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

NOTE :

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

2.See ’Overshoot/Undershoot Specification’ on page 18.

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.DQ(AC175), VIH.DQ(AC150) ; VIH.DQ(AC175) value is used when VREF + 175mV is referenced, VIH.DQ(AC150) value is used when VREF + 150mV is referenced.

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

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