Specification Sheet

Electrical Specifications
50 Datasheet, Volume 1 of 2
5.5.2 Signal DC Specifications
For additional specifications, refer to Section 1.8, “Related Documents.”
5.5.2.1 DDR4 Signal DC Specifications
For the next table, use Signal Group Table 5-6, “Signal Groups” to identify which
signals belong to each group.
Figure 5-2. VCCIN Static and Transient Tolerance Load Lines 1.0 mOHM
1.55
1.6
1.65
1.7
1.75
1.8
1.85
0 50 100 150 200 250
SKX<=145WLoadline1.0mOHM
VccINmax
VccINmin
VccINnom
Symbol Parameter Min Nom Max Units Notes
1
I
IL Input Leakage Current -1.4 — +1.4 mA 9
Data Signals
R
ON DDR4 Data Buffer On Resistance 25.5 30 34.5 ohm 6
Data ODT On-Die Termination for Data
Signals
42.5 50 57.5 ohm
8
Reference Clock and Command Signals
V
OL Output Low Voltage
—
(V
CCD
/ 2)* (R
ON
/
(R
ON
+R VTT_TERM
))
—V
2, 7
V
OH Output High Voltage
—
V
CCD
- ((V
CCD
/ 2)*
(R
ON
/(R
ON
+R
VTT_TERM
)))
—V
2, 5, 7
Data Signals
V
OL Output Low Voltage
—
Vol=(Ron / (Ron +
R
VDD_TERM))
*V
CCD
—V
10
V
OH Output High Voltage —
V
CCD —V