Rev. 1.1 /May. 2005

8

184pin Registered DDR SDRAM DIMMs

Note:

1. Operation at above absolute maximum rating can adversely affect device reliability

Parameter

Symbol

Rating

Unit

Operating Temperature (Ambient)

0 ~ 70

Storage Temperature

-55 ~ 150

-1.0 ~ 3.6

V

-1.0 ~ 3.6

V

Voltage on inputs relative to Vss

-1.0 ~ 3.6

V

Voltage on I/O pins realtive to Vss

-0.5 ~3.6

V

Output Short Circuit Current

IOS

50

mA

Soldering Temperature

⋅ Time

260

⋅ 10

Note:

3. VREF is expected to be equal to 0.5*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. VID is the magnitude of the difference between the input level on CK and the input level on /CK.

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 from 0.25V to 1.0V. For a given output, it represents the maximum differ-

ence between pullup and pulldown drivers due to process variation. The full variation in the ratio of the maximum to minimum

pullup and pulldown current will not exceed 1/7 for device drain to source voltages from 0.1 to 1.0.

6. VIN=0 to VDD, All other pins are not tested under VIN =0V.

7. DQs are disabled, VOUT=0 to VDDQ.

Parameter

Symbol

Min

Typ.

Max

Unit

Note

Power Supply Voltage

2.3

2.5

2.7

V

Power Supply Voltage

2.3

2.5

2.7

V

1

Input High Voltage

-

V

Input Low Voltage

-0.3

-

V

3

Termination Voltage

V

Reference Voltage

0.49*VDDQ

0.5*VDDQ

0.51*VDDQ

V

4

Input Voltage Level, CK and CK inputs

VIN(DC)

-0.3

-

VDDQ+0.3

V

Input Differential Voltage, CK and CK inputs

VID(DC)

0.36

-

VDDQ+0.6

V

5

V-I Matching: Pullup to Pulldown Current Ratio

VI(RATIO)

0.71

-

1.4

-

6

Input Leakage Current

-2

-

2

uA

7

Output Leakage Current

-5

-

5

uA

8

Normal Strength

Output Driver

Output High Current

(min VDDQ, min VREF, min VTT)

IOH

-16.8

-

-

mA

Output Low Current

(min VDDQ, max VREF, max VTT)

IOL

16.8

-

-

mA

Half Strength

Output Driver

Output High Current

(min VDDQ, min VREF, min VTT)

IOH

-13.6

-

-

mA

Output Low Current

(min VDDQ, max VREF, max VTT)

IOL

13.6

-

-

mA