PE7845DEV Datasheet, PDF (6/8 Pages) Pletronics, Inc. – PE78D Series 3.3 V PECL Clock Oscillators

PE78D Series 3.3 V
PECL Clock Oscillators
January 2008
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
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
Inches
mm
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
1 No connect
2 Output
Enable/Disable
3 Ground (GND)
4 Output
5 Output*
6 Supply Voltage
(V_CC)
Note
There is no internal connection to this pad
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.
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.
www.pletronics.com
425-776-1880
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