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參數(shù)資料
| 型號： | SM7644DESB-FREQ |
| 廠商： | PLETRONICS INC |
| 元件分類： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 70 MHz - 135 MHz, CMOS OUTPUT |
| 封裝： | ROHS COMPLIANT, CERAMIC, LCC-4 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 159K |
| 代理商： | SM7644DESB-FREQ |
SM76D Series 2.5 V
CMOS Clock Oscillators
August 2005
www.pletronics.com
425-776-1880
6
Mechanical:
Inches
mm
Cover:
Centered on the base
304 Stainless Steel
0.010 inch (0.25μm)
Electroless Nickel Plated
1 μinch (25 μm) typical
Label:
White Kapton with Black Letters
–or--
Blue Epoxy heat cure ink with laser
marked lettering
FR4 PCB Base:
Solder masked
All via holes tented on bottom
Copper Clad oz. Typical
Gold plated 0.02 μinch (0.5 μm)
Pin 3 Ground plane is typical
Not to scale
1 Typical dimension
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
0.200
5.08
L1
0.026 typical
0.66
The package is not 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
Output
Enable/Disable
When this pad is not connected the oscillator shall operate.
When this pad is logic low the output will be inhibited (high impedance state.)
Recommend connecting this pad to V
CC if the oscillator is to be always on.
2
Ground (GND)
3
Output
4
Supply Voltage
(V
CC)
Recommend connecting appropriate power supply bypass capacitors as close as
possible.
Layout and application information
For Optimum Jitter Performance, Pletronics recommends:
a ground plane under the device
no large transient signals (both current and voltage) should be routed under the device
do not layout near a large magnetic field such as a high frequency switching power supply
do not place near piezoelectric buzzers or mechanical fans.
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| SM7645DESB-FREQ | CRYSTAL OSCILLATOR, CLOCK, 70 MHz - 135 MHz, CMOS OUTPUT |
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相關(guān)代理商/技術(shù)參數(shù) |
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| SM7644DEV | 制造商:PLETRONICS 制造商全稱:Pletronics, Inc. 功能描述:3.3 V CMOS Clock Oscillators |
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| SM7644DEX | 制造商:PLETRONICS 制造商全稱:Pletronics, Inc. 功能描述:1.8 V CMOS Clock Oscillators |
| SM7644DV | 制造商:PLETRONICS 制造商全稱:Pletronics, Inc. 功能描述:3.3 V CMOS Clock Oscillators |
| SM7644DW | 制造商:PLETRONICS 制造商全稱:Pletronics, Inc. 功能描述:2.5 V CMOS Clock Oscillators |
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