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參數(shù)資料
| 型號： | PE7745DEV-156.25M |
| 廠商： | PLETRONICS INC |
| 元件分類： | XO, clock |
| 英文描述： | OSC 3.3V SMT 7X5 PECL |
| 中文描述： | CRYSTAL OSCILLATOR, CLOCK, 156.25 MHz, PECL OUTPUT |
| 封裝： | ROHS COMPLIANT, CERAMIC, LCC-6 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 153K |
| 代理商： | PE7745DEV-156.25M |
PE77D Series 3.3 V
PECL Clock Oscillators
April 2007
www.pletronics.com
425-776-1880
6
Mechanical:
Inches
mm
A
0.276 +_0.006
7.00 +_0.15
B
0.197 +_0.006
5.00 +_0.15
C
0.067 max
1.70 max
D1
0.038
0.96
E1
0.200
5.08
F1
0.004
0.10
G1
0.050
1.27
H1
0.055
1.40
Contacts
:
Gold 11.8 μinches
0.3 μm minimum over
Nickel 50 to 350 μinches
1.27 to 8.89 μm
1 Typical dimensions
Not to Scale
I1
0.024
0.60
J1
0.004R
0.10R
K1
0.008R
0.20R
Pad
Function
Note
1
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.
2
No connect
There is no internal connection to this pad
3
Ground (GND)
4
Output
Both outputs must be terminated and biased for proper operation. The ideal
termination is 50 ohms connected to 2.0V below the Supply Voltage.
5
Output*
6
Supply Voltage
(V
CC)
Recommend connecting appropriate power supply bypass capacitors as close as
possible.
Layout and application information
Recommend connecting Pad 1 and Pad 2 together to permit the design to accept Enable/Disable input on
either pad
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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