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參數(shù)資料
| 型號： | LV7844DEV-FREQ |
| 廠商： | PLETRONICS INC |
| 元件分類： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 80 MHz - 250 MHz, LVDS OUTPUT |
| 封裝： | LEADLESS PACKAGE-4 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 159K |
| 代理商： | LV7844DEV-FREQ |
LV78D Series 3.3 V
LVDS Clock Oscillators
August 2005
www.pletronics.com
425-776-1880
6
6
54
3
2
1
Mechanical:
Cover:
Centered on the base
304 Stainless Steel
0.010 inch (0.25mm)
Electroless Nickel Plated
1 μinch (25 μm) typical
Label:
White Kapton with Black Letters
–or--
Blue Epoxy heat cure ink covering
top with laser marked lettering
Inches
mm
FR4 PCB Base:
Solder masked
All via holes tented on bottom
Copper Clad 670 μinch (17 μm)
Nickel plated 118 μinch (3 μm)
Gold plated 0.8 μinch (0.02 μm)
Typical thicknesses
Pin 3 Ground plane is typical
Not to scale
A
0.351 +
_0.003
8.91 +
_0.07
B
0.356 +
_0.005
9.04 +
_0.13
C
0.103 +
_0.005
2.62 +
_0.13
D1
0.324
8.23
E1
0.316
8.03
F1
0.050
1.27
G1
0.040
1.02
H1
0.059
1.50
I1
0.020
0.51
J1
0.040
1.02
K1
0.100
2.54
L1
0.026 typical
0.66
The package is not hermetically sealed (the crystal unit inside is hermetically sealed).
The sides are intentionally left open to permit cleaning material to freely flow in the package, thus minimizing
the accumulation of contaminants during cleaning processes.
The internal part of the package must be thoroughly dry before operating.
Pad
Function
Note
1
No connect
There is no internal connection to this pad
2
Output
Enable/Disable
When this pad is not connected the oscillator shall operate.
When this pad is <0.30 volts, the output will be inhibited (high impedance state.)
Recommend connecting this pad to V
CC if the oscillator is to be always on.
3
Ground (GND)
4
Output
The outputs must be terminated, 100 ohms between the outputs is the ideal
termination.
5
Output*
6
Supply Voltage
(V
CC)
Recommend connecting appropriate power supply bypass capacitors as close as
possible.
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