PAD 1 Tristate
PAD 2 Ground and Case
PAD 3 Output
PAD 4 +3.3V
CONNECTION
VFJC
Crystal Oscillators HCMOS 3.3V
3.2X2.5mm Surface Mount
2 MHz to 50 MHz
Features
Wide frequency range with 3.3V supply
High speed-Low jitter CMOS output with tristate
Small SMD package-3.2X2.5mm
Extra low profile for slimline applications
Stability options: 100, 50 or 25ppm
Commercial or industrial temperature range
Rugged, hermetic package for automated assembly
Typical Applications
Telecom/networking systems that require low jitter clocks
9 DSL
9 Gigabit Ethernet,
9 Fibre channel
9 Optical networking
Mobile systems requiring small size
9 PDA
9 Wireless Lan
9 Notebook computer
9 PCMCIA
9 Memory modules
Description
Valpey Fisher’s JC surface mount crystal oscillator provides
waveforms for clocking HCMOS and TTL circuits. The new
3.2X2.5mm footprint package provides the performance of
larger oscillators with 75% reduction in board space over other
industry standard packages. Low jitter output signals are
generated via the use of hi-Q fundamental or overtone
miniature quartz resonators. They are ideal for space critical
portable or hand-held equipment, while their tight tolerance
and low noise performance makes them also the ideal choice for
high data rate telecom applications. The wide range of
frequencies from 2 to 50MHz, many stability options, 3.3 volt
supply, and industrial temperature ranges, makes this model
attractive for any application requiring extreme size reduction.
Tape and reel packaging is standard.
Valpey Fisher Corporation • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
1 Rev 1.0 4/7/05
Valpey Fisher Corporation • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
2 Rev 1.0 4/7/05
ELECTRICAL SPECIFICATIONS
Frequency Range 2MHz to 50MHz
Frequency Stability
Includes calibration at 25°C, operating 100 or 50ppm
temperature, change of input voltage,
change of load, shock and vibration
Input Voltage, VDD 3.3 +/-10%
Output Levels (CMOS) 1 level: VDD-0.4 min
‘0’ level: 0.40 max
Output Load 15pF typ, 30pF max
Jitter 8 ps RMS max
Symmetry 45/55 percent @ 50% VDD
Aging (typical)
First year 3ppm
After first year 1ppm/yr
Input Current (Max) 3.3V Units
2.0-9.999 MHz 7 mA
10-19.999 MHz 7 mA
20-31.999 MHz 12 mA
32-50.000 MHz 20 mA
Rise and Fall Times (Max)
2.0-9.99 MHz 10 ns
10-19.99 MHz 10 ns
20-31.99 MHz 8 ns
32-50.00 MHz 5 ns
Input Requirements for Pad 1:
“1”: On-Pad 1 may float or 2.8V min
“0”: Tristate-Pad 1 requires 0.4V max
ENVIRONMENTAL SPECIFICATIONS
Temperature
Operating Commercial: 0° to 70°C
Industrial: -40°C to +85°C
Storage -55° to +125°C
Shock- 1000 Gs, 0.35 ms, ½ sine wave, 3 shocks in each plane
Vibration- 10-2000 Hz of .06” d.a. or 10 Gs, whichever is less
Humidity- Resistant to 85° R.H. at 85°C
MECHANICAL SPECIFICATIONS
Leak- MIL STD 883, Method 1014, Condition A1
Case- Ceramic with hermetic resistance-welded metal lid
Pads- Solderable gold over nickel
Marking- Epoxy ink or laser engraved
Resistance to solvents- MIL STD 202, Method 215
MARKING SPECIFICATION
The format for the marking is:
Valpey-Fisher Model Code (XX)
Oscillator
VFJCXX
125.00
Pin 1
Frequency
Date Code
HOW TO ORDER
Create ordering part number as follows:
VFJC A B 125 M
Frequency M=MHz
Frequency Stability Temperature Range
A=+/-100 ppm A=0 to 70°C
B=+/-50 ppm B=-40 to +85°C
VFJC
Crystal Oscillators HCMOS 3.3V
3.2X2.5mm Surface Mount
2 MHz to 50 MHz
