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© 2008 FOX ELECTRONICS | ISO9001:2000 Certified

1

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.

Frequency

Stability

Operating

Temperature (ºC)

-20 ~ +70

-40 ~ +85

-20 ~ +70

-40 ~ +85

Model

Number

Part Number

822-Frequency-xxxxx

822R-Frequency-xxxxx

822E-Frequency-xxxxx

822ER-Frequency-xxxxx

• PART NUMBER SELECTION Learn More

TCXO

TCXO

VCTCXO

VCTCXO

FOX331

FOX331R

FOX331E

FOX331ER

3.3V SMD Stratum

III HCMOS TCXO/VCTCXO

Rev. 4/21/2008

RoHS Compliant / Preliminary

http://www.foxonline.com/need_a_sample.htm

Model: FOX331 Series

Page 1 of 2

10.000MHz

19.200MHz

26.000MHz

• Available Frequencies

12.800MHz

19.440MHz

16.384MHz

20.000MHz

PARAMETERS

Storage Temperature Range

Frequency Stability

Over Temp Range (-20ºC ~ +70ºC)

Over Temp Range (-40ºC ~ +85ºC)

Output Voltage (HCMOS)

Output Current

Output Load

Startup Time

Phase Noise

@100Hz

@1kHz

@10kHz

Maximum Soldering Temp / Time

Moisture Sensitivity Level (MSL)

Termination Finish

-55ºC ~ +125ºC

±4.6PPM

±0.28PPM

±0.37PPM

3.3V±5%

6mA

5nS

5nS

45% ~ 55%

6mA Min

-6mA Min

15pF

2mS

±5PPM Min

-120dBc

-140dBc

-148dBc

260ºC / 10 Seconds

1

Au

• ELECTRICAL CHARACTERISTICS

All dimensions are in millimeters.

Pin Connections

#1 NC

#6 Output

#2 NC

#7 NC

#3 NC

#8 NC

#4 NC

#9 E/D

#5 GND

#1 Vc

#6 Output

#2 NC

#7 NC

#3 NC

#8 NC

#4 NC

#9 E/D

#5 GND

FOX331/331R (TCXO)

FOX331E/331ER (VCTCXO)

OUTPUT (Pin 6)

ACTIVE

ACTIVE

High Z

• ENABLE / DISABLE FUNCTION

(Pin 9)

1

2

3

4

5

6

7

8

9

10

1

5

6

9

10

2.54

1.27

1.0

0.8

0.6

1

2.0 M ax

0.4

0.8

5.0±0.1

7.0±0.1

1.8

1.3

1.4

1.0

1.4

1.2

2.54

6.0

Bottom View

Side & End View

Top View

Recom m ended

Solder Pad Layout