250MHz, 300MHz, 312.5MHZ, 400MHz (Contact IDT for additional frequencies)
Note: Inclusive of initial frequency accuracy, operating temperature range, supply variation, load variation, 3 times solder reflow, shock, vibration and 1 year aging at 25°C. We do not
recommend hand soldering the devices.
JUNE 20, 2017
3
IDT XO LVPECL CRYSTAL OSCILLATOR
XUQ DATASHEET
DC Characteristics
(V
DD
= 2.5V
±5%, T
A
= - 20°C to +70°C; -40° to +85°C). Below are guaranteed for listed standard frequencies.
Parameter
Power Supply Current
Output HIGH Voltage
Output LOW Voltage
Enable/Disable Input HIGH Voltage
(Output enabled)*
Enable/Disable Input LOW Voltage
(Output disabled)
Symbol
I
DD
V
OH
V
OL
V
IH
V
IL
Condition
<156.25MHz
>156.25MHz
Std LVPECL load
Std LVPECL load
Min
Typ
Max
102
112
Units
mA
V
V
V
1.1
0.035
70%V
DD
1,45
0.085
30%V
DD
V
* A pullup resistor from pin 6 (VDD) to pin 1 (E/D) enables output when pin 1 is left open.
AC Characteristics
(V
DD
= 2.5V
±5%, T
A
= - 20°C to +70°C; -40° to +85°C). Below are guaranteed for listed standard frequencies.
Note: Inclusive of initial frequency accuracy, operating temperature range, supply variation, load variation, 3 times solder reflow, shock, vibration and 1 year aging at 25°C. We do not
recommend hand soldering the devices.
IDT XO LVPECL CRYSTAL OSCILLATOR
4
JUNE 20, 2017
XUQ DATASHEET
DC Characteristics
(V
DD
= 1.8V
±5%, T
A
= - 20°C to +70°C; -40° to +85°C). Below are guaranteed for listed standard frequencies.
Parameter
Power Supply Current
Output HIGH Voltage
Output LOW Voltage
Enable/Disable Input HIGH Voltage
(Output enabled)*
Enable/Disable Input LOW Voltage
(Output disabled)
Symbol
I
DD
V
OH
V
OL
V
IH
V
IL
<250MHz
>250MHz
Condition
Min
Typ
Max
75
90
Units
mA
V
V
V
Std LVPECL load
Std LVPECL load
0.5
0
70%V
DD
0.8
0.25
30%V
DD
V
* A pullup resistor from pin 6 (VDD) to pin 1 (E/D) enables output when pin 1 is left open.
AC Characteristics
(V
DD
= 1.8V
±5%, T
A
= - 20°C to +70°C; -40° to +85°C). Below are guaranteed for listed standard frequencies.
Note: Inclusive of initial frequency accuracy, operating temperature range, supply variation, load variation, 3 times solder reflow, shock, vibration and 1 year aging at 25°C. We do not
linux2.6.9内核的makefile中有一段如下语句：
prepare1: prepare2
ifneq ($(KBUILD_SRC),)
@echo ' Using $(srctree) as source for kernel'
$(Q)if ; then \
echo " $(srctree) is ......
出版业曾经流传着一个笑话：如果您的出版品面临困境之际，就重新改版设计吧！然而，这句话在目前一点也起不了作用了；当今的出版事业如果未能发展网路服务，那就免不了完全倒闭一途。零售业也有这样必然的结果吗？
Best Buy重新布局旗下60家零售商店了。这家电子零售商重新配置其庞大的电子商场，使其看起来更像是一家…...苹果零售店(Apple Stores)。在此之前，Best B...[详细]
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