E2747/E2747LF STRATUM 3 TCXO (-20 to 70°C)
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ISSUE 4 ; 13 JUNE 2005
Nominal Frequency, Fo
Solderability: MIL-STD-202, Method 208, Category 3
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Resistance to Soldering Heat: 260°C / 10s exposure
Marking: Laser Marked
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12.8MHz
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RoHS/Soldering: Parts with the suffix ‘LF’ on the part
number are fully compliant with the European Union
directive 2002/95/EC on the restriction of the use of
certain hazardous substances in electrical and electronic
equipment.
Supply Voltage
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3.3V 5ꢀ
Input Current
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< 4mA
Note:The RoHS compliant parts are suitable for assembly
using both Lead-free solders (see Lead-free Reflow
soldering profile) andTin / Lead solders (seeTin / Lead
Reflow soldering profile).
Output
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Type: HCMOS
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Load: 15pF max
Marking
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VoL: <0.1 Vs
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Manufacturers ID (CMAC)
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VoH: >0.9 Vs
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Manufacturing Identifier (xx)
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Duty Cycle @ 50ꢀ: 45ꢀ to 55ꢀ
Pad 1 / Static Sensitivity Identifier (
Abbreviated Part Number (2747)
∆)
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RiseTime, 10ꢀ to 90ꢀ: < 9ns
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FallTime, 90ꢀ to 10ꢀ: < 9ns
Oscillator’s Date of Manufacture (YW)
Holdover Stability [ (Fmax-Fmin)/2Fo]
Note: Production parts will be
CMAC xx
marked in this format. Sample
marking may vary
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Temperature, –20 to 70°C: < 0.28ppm
∆ 2747YW
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Temperature, –20 to 70°C, inclusive of
Supply Voltage, 3.3V 5ꢀ and Ageing, 24 hours:
< 0.32ppm
Free-Run Accuracy, incl.
Outline in mm
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Calibration@25°C,Temperature –20 to 70°C, Supply
Voltage 3.3V 5ꢀ Load 15pF 5ꢀ, Reflow Soldering and
Ageing 20 years: < 4.6ppm ref. to Nominal Frequency
Pad Connections
1.Do not connect
2.N/C
3.DC Coupled Output
(do not connect)
4.GND
5.Output
6.N/C
7.N/C
Phase Noise
7.0 0.15
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10Hz
< -90dBc/Hz
< -115dBc/Hz
< -127dBc/Hz
< -137dBc/Hz
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100Hz
1kHz
10kHz
> 100kHz < -143dBc/Hz
8.Tri-state Control *
9. +Vs
10.Do not connect,
or connect to GND
* see text
Tri-State
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1.0
Pad 8 open circuit or > 0.6Vs: Output Enabled
1.27
5
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Pad 8 < 0.2Vs: Output inTri-state mode
9
8
1
6
3
7
2
InTri-state mode, the output stage is disabled but the
oscillator and compensation circuit are still active
(current consumption < 1mA)
4
10
0.6
Environmental Specification
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StorageTemperature Range: -55 to 125°C
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Vibration: IEC 60068-2-6 Test Fc procedure B4, 10-60Hz
1.5mm displacement, at 98.1m/s2, 30 minutes in each of
three mutually perpendicular axes at 1 octave per minute
Shock: IEC 60068-2-27 Test Ea, 980m/s2 acceleration for
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6ms duration, 3 shocks in each direction along three
mutually perpendicular axes
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