Datasheet

Datasheet 287
Electrical Characteristics
C
I/O
DQ/DQS/DQSB DDR2 Input/
Output Pin Capacitance
1.0 — 4.0 pF
1.25V PCI Express* Interface 2.0
V
TX-DIFF P-P
Differential Peak to Peak
Output Voltage
0.800 — 1.2 V 2
V
TX_CM-ACp
AC Peak Common Mode
Output Voltage
——20mV
Z
TX-DIFF-DC
DC Differential TX Impedance 80 100 120
V
RX-DIFF p-p
Differential Peak to Peak
Input Voltage
0.175 — 1.2 V 3
V
RX_CM-ACp
AC Peak Common Mode Input
Voltage
——150mV
Input Clocks
V
IL
Input Low Voltage -0.150 0 N/A V
V
IH
Input High Voltage 0.660 0.710 0.850 V
V
CROSS(ABS)
Absolute Crossing Voltage 0.300 N/A 0.550 V 6,7,8
V
CROSS(REL)
Range of Crossing Points N/A N/A 0.140 V
C
IN
Input Capacitance 1 — 3 pF
CL_DATA, CL_CLK
V
IL
Input Low Voltage — — 0.277 V
V
IH
Input High Voltage 0.427 — — V
I
LEAK
Input Leakage Current — — ± 20 μA
C
IN
Input Capacitance — — 1.5 pF
I
OL
Output Low Current (CMOS
Outputs)
——1.0mA
@V
OL_HI
max
I
OH
Output High Current (CMOS
Outputs)
6.0 — — mA
@V
OH_HI
min
V
OL
Output Low Voltage (CMOS
Outputs)
——0.06V
V
OH
Output High Voltage (CMOS
Outputs)
0.6 — — V
PWROK, CL_PWROK, RSTIN#
V
IL
Input Low Voltage — — 0.3 V
V
IH
Input High Voltage 2.7 — — V
I
LEAK
Input Leakage Current — — ±1 mA
C
IN
Input Capacitance — — 6.0 pF
CL_RST#
V
IL
Input Low Voltage — — 0.13 V
V
IH
Input High Voltage 1.17 — — V
I
LEAK
Input Leakage Current — — ±20 μA
C
IN
Input Capacitance — — 5.0 pF
ICH_SYNCB
I
OL
Output Low Current (CMOS
Outputs)
——2.0mA
@V
OL_HI
max
Table 27. DC Characteristics
Symbol Parameter Min Nom Max Unit Notes