EDE2508ABSE, EDE2516ABSE
Recommended DC Operating Conditions (SSTL_18)
Parameter
Supply voltage
Supply voltage for output
Supply voltage for DLL
Input reference voltage
Termination voltage
DC input logic high
DC input low
AC input logic high
-6C, -6E
-5C
AC input low
-6C, -6E
-5C
Symbol
VDD
VDDQ
VDDL
VREF
VTT
VIH (DC)
VIL (DC)
VIH (AC)
VIH (AC)
VIL (AC)
VIL (AC)
min.
1.7
1.7
1.7
0.49
×
VDDQ
VREF
−
0.04
−0.3
typ.
1.8
1.8
1.8
0.50
×
VDDQ
VREF
max.
1.9
1.9
1.9
0.51
×
VDDQ
VREF
+
0.04
VDDQ
+
0.3
Unit
V
V
V
V
V
V
Notes
4
4
4
1, 2
3
VREF
+
0.125
VREF
+
0.200
VREF
+
0.250
VREF – 0.125 V
V
V
VREF – 0.200 V
VREF – 0.250 V
Notes: 1. The value of VREF may be selected by the user to provide optimum noise margin in the system. Typically
the value of VREF is expected to be about 0.5
×
VDDQ of the transmitting device and VREF are expected
to track variations in VDDQ.
2. Peak to peak AC noise on VREF may not exceed
±2%
VREF (DC).
3. VTT of transmitting device must track VREF of receiving device.
4. VDDQ tracks with VDD, VDDL tracks with VDD. AC parameters are measured with VDD, VDDQ and
VDDL tied together.
Preliminary Data Sheet E0573E30 (Ver. 3.0)
6
ELPIDA [ ELPIDA MEMORY ]
