IBMN612404GT3B
IBMN612804GT3B
128Mb Double Data Rate Synchronous DRAM
Preliminary
Capacitance
Parameter
Input Capacitance: CK, CK
Symbol
CI
Min.
2.0
Max.
3.0
Units
pF
Notes
1
1
1
Delta Input Capacitance: CK, CK
delta CI
0.25
3.0
pF
1
Input Capacitance: All other input-only pins (except DM)
Delta Input Capacitance: All other input-only pins (except DM)
Input/Output Capacitance: DQ, DQS, DM
Delta Input/Output Capacitance: DQ, DQS, DM
Output Capacitance: QFC
CI
2.0
4.0
2.0
pF
1
2
delta CI
0.5
pF
1
2
C
5.0
pF
1, 2
1
IO
delta C
0.5
pF
IO
CO
4.0
pF
1
1
1. V
= V = 2.5V 0.2V (minimum range to maximum range), f = 100MHz, T = 25°C, VO = V
, VO = 0.2V.
Peak -Peak
DDQ
DD
A
DC
DDQ/2
2. Although DM is an input-only pin, the input capacitance of this pin must model the input capacitance of the DQ and DQS pins. This
is required to match input propagation times of DQ, DQS and DM in the system.
DC Electrical Characteristics and Operating Conditions
(0˚C ≤ TA ≤ 70°C; VDDQ = 2.5V ± 0.2V, VDD = + 2.5V ± 0.2V, see AC Characteristics)
Symbol
Parameter
Min
2.3
2.3
Max
2.7
Units
V
Notes
V
Supply Voltage
1
1
DD
V
I/O Supply Voltage
2.7
V
DDQ
Supply Voltage
I/O Supply Voltage
V
, V
0
0
V
SS
SSQ
V
I/O Reference Voltage
0.49 x V
0.51 x V
DDQ
V
V
V
V
V
V
1, 2
1, 3
1
REF
DDQ
V
I/O Termination Voltage (System)
V
V
− 0.04
+ 0.15
V
+ 0.04
REF
TT
REF
REF
V
Input High (Logic1) Voltage
V
+ 0.3
DDQ
IH(DC)
V
Input Low (Logic0) Voltage
− 0.3
V
− 0.15
REF
1
IL(DC)
IN(DC)
ID(DC)
V
V
Input Voltage Level, CK and CK Inputs
Input Differential Voltage, CK and CK Inputs
V-I Matching Pullup Current to Pulldown Current Ratio
− 0.3
0.30
0.71
V
+ 0.3
+ 0.6
1
DDQ
DDQ
V
1, 4
5
VI
1.4
Ratio
Input Leakage Current
I
− 5
− 5
5
5
µA
µA
1
1
I
Any input 0V ≤ V ≤ V ; (All other pins not under test = 0V)
IN
DD
Output Leakage Current
(DQs are disabled; 0V ≤ V ≤ V
I
OZ
out
DDQ
I
Output Current: Nominal Strength Driver
− 16.8
OH
High current (V
Low current (V
= V
-0.373V, min V
, min V )
TT
mA
1
OUT
DDQ
REF
I
16.8
= 0.373V, max V
, max V )
OL
OUT
REF
TT
1. Inputs are not recognized as valid until V
stabilizes.
REF
2. V
is expected to be equal to 0.5 V
of the transmitting device, and to track variations in the DC level of the same. Peak-to-
REF
DDQ
peak noise on V
may not exceed 2% of the DC value.
REF
3. V is not applied directly to the device. V is a system supply for signal termination resistors, is expected to be set equal to V ,
REF
TT
TT
and must track variations in the DC level of V
.
REF
4. V is the magnitude of the difference between the input level on CK and the input level on CK.
ID
5. The ratio of the pullup current to the pulldown current is specified for the same temperature and voltage, over the entire tempera-
ture and voltage range, for device drain to source voltages for 0.25 volts to 1.0 volts. For a given output, it represents the maximum
difference between pullup and pulldown drivers due to process variation.
©IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
06K0566.F39350B
1/01
Page 52 of 79
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