3.3V SMD Stratum
III
HCMOS TCXO/VCTCXO
Model: FOX331 Series
Page 1 of 2
RoHS Compliant / Preliminary
Rev. 4/21/2008
http://www.foxonline.com/need_a_sample.htm
• PART NUMBER SELECTION
Model
Number
822-Frequency-xxxxx
FOX331
822R-Frequency-xxxxx
FOX331R
822E-Frequency-xxxxx
FOX331E
822ER-Frequency-xxxxx
FOX331ER
Part Number
Frequency
Operating
Stability Temperature (ºC)
-20 ~ +70
TCXO
-40 ~ +85
TCXO
-20 ~ +70
VCTCXO
-40 ~ +85
VCTCXO
T o p V ie w
7 .0±0.1
5 .0±0.1
• Available Frequencies
10.000MHz
19.200MHz
26.000MHz
12.800MHz
19.440MHz
16.384MHz
20.000MHz
S id e & E n d V ie w
0.8
0.4
2 .0 M ax
• ELECTRICAL CHARACTERISTICS
PARAMETERS
MAX
(unless otherwise noted)
-55ºC ~ +125ºC
±4.6PPM
±0.28PPM
±0.37PPM
3.3V±5%
6mA
5nS
5nS
45% ~ 55%
10%V
DD
90%V
DD
6mA Min
-6mA Min
15pF
2mS
±5PPM Min
-120dBc
-140dBc
-148dBc
260ºC / 10 Seconds
1
Au
Storage Temperature Range
Frequency Stability
Overall (including 20 years aging)
1
Over Temp Range (-20ºC ~ +70ºC)
Over Temp Range (-40ºC ~ +85ºC)
Supply Voltage (V
DD
)
Input Current (I
DD
)
Rise Time (10% ~ 90% V
DD
) (T
R
)
Fall Time (90% ~ 10% V
DD
) (T
F
)
Output Symmetry ( 50% V
DD
)
Output Voltage (HCMOS)
Output Low (V
OL
)
Output High (V
OH
)
Output Current
(I
OL
)
(I
OH
)
Output Load
Startup Time
Pullability (VCTCXO) (V
C
= 1.65±1.65V)
2
Phase Noise
@100Hz
@1kHz
@10kHz
Maximum Soldering Temp / Time
Moisture Sensitivity Level (MSL)
Termination Finish
1
B o tto m V ie w
1 .27
1
2
3
4
5
1.0
2 .54
10
9
8
7
6
0.8
0.6
1
R e co m m e nd e d
S o ld e r P ad L a yo u t
6 .0
9
1 .0
6
2 .54
5
10
1 .2
1
1 .4
1 .4
1 .3
1 .8
Inclusive of initial frequency tolerance, operating temperature range, 20 years aging, input
voltage change, load change, shock and vibration.
2
For proper operation, a control voltage (Vc) must be applied to pin 1 on VCTCXOs.
3
An internal pullup resistor from pin 9 to pin 10 allows active output if pin 9 is left open.
Note: The above specifications, having been carefully prepared and checked, is believed to be
accurate at the time of publication; however, no responsibility is assumed by Fox Electronics
for inaccuracies.
Dimensional drawing is for reference to critical specifications defined by size measurements.
Certain non-critical visual attributes, such as side castellations, etc. may vary.
All dimensions are in millimeters.
Pin Connections
FOX331/331R (TCXO)
FOX331E/331ER (VCTCXO)
#1 NC
#2 NC
#3 NC
#4 NC
#5 GND
#6 Output
#7 NC
#8 NC
#9 E/D
#10 V
dd
#1 Vc
#2 NC
#3 NC
#4 NC
#5 GND
#6 Output
#7 NC
#8 NC
#9 E/D
#10 V
dd
• ENABLE / DISABLE FUNCTION
OUTPUT (Pin 6)
(Pin 9)
ACTIVE
OPEN
3
'1' Level V
IH
≥
70%V
DD
ACTIVE
'0' Level V
IL
≤
30%V
DD
High Z
FOXElectronics
5570 Enterprise Parkway Fort Myers, Florida 33905 USA +1.239.693.0099 FAX +1.239.693.1554
http://www.foxonline.com
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