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HYB25D256161CE Datasheet, PDF (49/72 Pages) Infineon Technologies AG – 16M x 16 Double Data Rate Graphics DRAM
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HYB25D256161CE-[4/5]
256-Mbit Double Data Rate SGRAM
Electrical Characteristics
Table 13 Electrical Characteristics and DC Operating Conditions 1)
Parameter
Symbol
Values
Unit Note/Test Condition 2)
Supply Voltage
I/O Supply Voltage
Supply Voltage, I/O Supply
Voltage
I/O Reference Voltage
I/O Termination Voltage (System)
Input High (Logic1) Voltage
Input Low (Logic0) Voltage
Input Voltage Level,
CK and CK Inputs
VDD
VDDQ
VSS,
VSSQ
VREF
VTT
VIH(DC)
VIL(DC)
VIN(DC)
Input Differential Voltage,
CK and CK Inputs
VID(DC)
VI-Matching Pull-up Current to
Pull-down Current
VIRatio
Input Leakage Current
II
Min.
2.5
2.5
0
Max.
2.7
V
2.7
V
0
V
0.49 × VDDQ 0.51 × VDDQ V
VREF – 0.04 VREF + 0.04 V
VREF + 0.15 VDDQ + 0.3 V
–0.3
VREF – 0.15 V
–0.3
VDDQ + 0.3 V
0.36
VDDQ + 0.6 V
0.71
1.4
—
–2
2
µA
DDR400 2)
DDR400 2)
—
2)3)
2)4)
2)
2)
2)
2)5)
6)
Any input 0 V ≤ VIN ≤ VDD; 2)
All other pins not under test = 0 V
Output Leakage Current
IOZ
–5
Output High Current, Normal
IOH
—
Strength Driver
Output Low Current, Normal
Strength Driver
IOL
16.2
5
–16.2
—
µA DQs are disabled;
0 V ≤ VOUT ≤ VDDQ 2)
mA VOUT = 1.95 V 2)
mA VOUT = 0.35 V 2)
1) 0 °C ≤ TA ≤ 70 °C
2) VREF is expected to be equal to 0.5 x VDDQ of the transmitting device, and to track variations in the DC level of the same.
Peak-to-peak noise on VREF may not exceed ± 2% of the DC value.
3) VREF is expected to be equal to 0.5 x VDDQ of the transmitting device, and to track variations in the DC level of the same.
Peak-to-peak noise on VREF may not exceed ± 2% of the DC value.
4) VTT is not applied directly to the device. VTT is a system supply for signal termination resistors, is expected to be set equal
to VREF, and must track variations in the DC level of VREF.
5) VID is the magnitude of the difference between the input level on CK and the input level on CK.
6) The ration of the pull-up current to the pull-down current is specified for the same temperature and voltage, over the entire
temperature and voltage range, for device drain to source voltage from 0.25 to 1.0 V. For a given output, it represents the
maximum difference between pull-up and pull-down drivers due to process variation.
Datasheet
49
Rev.1.0, 2004-02
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