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PE7744DEV-161.1328M Schematic ( PDF Datasheet ) - PLE

Teilenummer PE7744DEV-161.1328M
Beschreibung PECL Clock Oscillators
Hersteller PLE
Logo PLE Logo 




Gesamt 8 Seiten
PE7744DEV-161.1328M Datasheet, Funktion
www.DataSheet4U.com
PE77D Series 2.5 V
PECL Clock Oscillators
October 2006
• Pletronics’ PE77D Series is a quartz crystal
controlled precision square wave generator
with a PECL output.
• The package is designed for high density
surface mount designs.
• Low cost mass produced oscillator.
• Tape and Reel or Tube packaging is available.
• 40 to 250 MHz
• 5 x 7 mm LCC Ceramic Package
• Enable/Disable Function on pad 1
• Disable function includes low standby power
mode
• 3rd Overtone Crystals used
• Improved circuit to minimize oscillator issues
such as multi-mode output signal.
• Low Jitter
Pletronics Inc. certifies this device is in accordance with the
RoHS 6/6 (2002/95/EC) and WEEE (2002/96/EC) directives.
Pletronics Inc. guarantees the device does not contain the following:
Cadmium, Hexavalent Chromium, Lead, Mercury, PBB’s, PBDE’s
Weight of the Device: 0.16 grams
Moisture Sensitivity Level: 1 As defined in J-STD-020C
Second Level Interconnect code: e4
Absolute Maximum Ratings:
Parameter
VCC Supply Voltage
Vi Input Voltage
Vo Output Voltage
Unit
-0.5V to +7.0V
-0.5V to VCC + 0.5V
-0.5V to VCC + 0.5V
Thermal Characteristics
The maximum die or junction temperature is 155oC
The thermal resistance junction to board is 30 to 50oC/Watt depending on the solder pads, ground plane
and construction of the PCB.
Product information is current as of publication date. The product conforms
to specifications per the terms of the Pletronics standard warranty. Production
processsing does not necessarily include testing of all parameters.
Copyright © 2006, Pletronics Inc.






PE7744DEV-161.1328M Datasheet, Funktion
Mechanical:
Contacts:
Gold 11.8 μinches 0.3 μm minimum over
Nickel 50 to 350 μinches 1.27 to 8.89 μm
PE77D Series 2.5 V
PECL Clock Oscillators
October 2006
1 Typical dimensions
Not to Scale
Inches
mm
A 0.276 +_0.006 7.00 +_0.15
B 0.197 +_0.006
C 0.067 max
D1 0.038
E1 0.200
F1 0.004
G1 0.050
H1 0.055
I1 0.024
J1 0.004R
K1 0.008R
5.00 +_0.15
1.70 max
0.96
5.08
0.10
1.27
1.40
0.60
0.10R
0.20R
Pad Function
1 Output
Enable/Disable
2 No connect
3 Ground (GND)
4 Output
5 Output*
6 Supply Voltage
(VCC)
Note
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 VCC if the oscillator is to be always on.
There is no internal connection to this pad
Both outputs must be terminated and biased for proper operation. The ideal
termination is 50 ohms connected to 2.0V below the Supply Voltage.
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.
www.pletronics.com
425-776-1880
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