White Electronic Designs
DC OPERATING CONDITIONS
All voltages referenced to V
SS
Parameter
Supply voltage
I/O Supply voltage
V
CCL
Supply voltage
I/O Reference voltage
I/O Termination voltage
Symbol
V
CC
V
CCQ
V
CCL
V
REF
V
TT
Min
1 .7
1 .7
1 .7
0.49 x V
CCQ
V
REF
-0.04
Typical
1 .8
1 .8
1 .8
0.50 x V
CCQ
V
REF
W3HG264M72EER-AD7
ADVANCED
Max
1 .9
1 .9
1 .9
0.51 x V
CCQ
V
REF
+ 0.04
Unit
V
V
V
V
V
Notes
1
4
4
2
3
Notes:
1. V
CC
and V
CCQ
must track each other. V
CCQ
must be less than or equal to V
CC
.
2. V
REF
is expected to equal V
CCQ
/2 of the transmitting device and to track variations in the DC level of the same. Peak-to-peak noise on V
REF
may not excedd ±1 percent of the DC
value. Peak-to-peak AC noise on V
REF
may not exceed ±2 percent of V
REF
(DC). This measurement is to be taken at the nearest V
REF
bypass capacitor.
3. V
TT
is not applied directly to the device. V
TT
is a system supply for signal termination resistors, is expected to be set equal to V
REF
and must track variations in the DC level of V
REF
.
4. V
CCQ
tracks with V
CC
; V
CC
L track with V
CC
.
ABSOLUTE MAXIMUM DC RATINGS
Symbol
V
CC
V
CCQ
V
CCL
V
IN
, V
OUT
T
STG
T
CASE
T
OPR
Parameter
Voltage on V
CC
pin relative to V
SS
Voltage on V
CCQ
pin relative to V
SS
Voltage on V
CCL
pin relative to V
SS
Voltage on any pin relative to V
SS
Storage temperature
Device operating temperature
Operating temperature (ambient)
Command/Address,
RAS#, CAS#, WE#,
CS#, CKE
CK, CK#
DM
DQ, DQS, DQS#
MIN
-1.0
-0.5
-0.5
-0.5
-55
0
0
-5
-5
-5
-10
-18
MAX
2.3
2.3
2.3
2.3
100
85
55
5
5
5
10
18
U nit
V
V
V
V
°C
°C
°C
µA
µA
µA
µA
µA
I
L
Input leakage current; Any input 0V<V
IN
<V
CC
; V
REF
input
0V<V
IN
<0.95V; Other pins not under test = 0V
I
OZ
I
VREF
Output leakage current;
0V<V
OUT
<V
CCQ
; DQs and ODT are disable
V
REF
leakage current; V
REF
= Valid V
REF
level
INPUT/OUTPUT CAPACITANCE
TA=25 0 C, f=1 00MHz
Parameter
Input capacitance (A0 - A13, BA0 - BA1 ,RAS#,CAS#,WE#)
Input capacitance ( CKE0), (ODT0)
Input capacitance (CS0#)
Input capacitance (CK0, CK0#)
Input capacitance (DM0 - DM8), (DQS0 - DQS8)
Input capacitance (DQ0 - DQ63), (CB0 - CB7)
Symbol
C
IN1
C
IN2
C
IN3
C
IN4
C
IN5
C
OUT1
Min
Max
Unit
pF
pF
pF
pF
pF
pF
December 2005
Rev. 0
4
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
