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Data Sheet 0447H  
CRYSTAL CLOCK OSCILLATORS  
Rev. D  
Differential Positive ECL (DPECL)  
SK-B29B0 Series  
Description  
The SK-B29B0 Series of quartz crystal oscillators provide DPECL Fast Edge compatible signals. This  
device is to operate using positive voltage and uses multiple ground pins for improved signal integrity. This  
device is intended to operate on positive voltage for PECL applications.  
Features  
• Wide frequency range - 350.0MHz to 1.7GHz  
• User specified tolerance available  
• Case at electrical ground  
• Low Jitter - Wavecrest jitter characterization  
available  
• High Reliability - NEL HALT/HASS qualified for  
crystal oscillator start-up conditions  
• High Q Crystal actively tuned oscillator circuit  
• Power supply decoupling internal  
• High frequencies due to proprietary design  
• RoHS compliant, Lead-free construction  
• Will withstand SMD reflow temperatures of 253°C  
for 4 minutes maximum  
• All metal, resistance weld, hermetically sealed  
package  
• High shock resistance, to 1500g  
Electrical Connection  
Pin  
1
Connection  
VCC  
2
6
VEE Case  
VEE Case  
Output  
7
8
/Output  
9
VEE Case  
VEE Case  
Enable/Disable  
13  
14  
All other pins are  
No Connect  
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881  
Email: nelsales@nelfc.com www.nelfc.com  
Data Sheet 0447H  
CRYSTAL CLOCK OSCILLATORS  
Rev. D  
SK-B29B0 Series Continued  
Differential Positive ECL (DPECL)  
Operating Conditions and Output Characteristics  
Electrical Characteristics  
Parameter  
Symbol  
-----  
Conditions  
-----  
Min  
Typical  
Max  
Frequency  
350.0MHz  
45/55%  
-----  
1.7GHz  
55/45%  
VCC-1.620V  
VCC-0.880V  
600 psec  
0.5 psec  
0.8V  
Duty Cycle  
-----  
@ 50% points  
-----  
-----  
Logic 0 (1)  
VOL  
VCC-1.810V  
VCC-1.025V  
-----  
Logic 1(1)  
VOH  
-----  
-----  
Rise & Fall Time  
Jitter, RMS (4)  
Enable Voltage(2)  
Disable Voltage  
Frequency Stability(3)  
tr,tf 20-80%VO with 50 ohm load to VCC-2V -----  
350 psec  
0.3 psec  
-----  
-----  
----  
-----  
-----  
with VEE=0V  
0V  
-----  
dF/F  
with VEE=0V  
2.0V  
-100ppm  
-----  
VCC  
Overall conditions including:  
voltage, calibration, temp.,  
10 yr aging, shock, vibration  
-----  
+100ppm  
General Characteristics  
Parameter  
Symbol  
Conditions  
Min  
Typical  
2.5V  
Max  
Supply Voltage  
Supply Current  
VCC  
ICC  
2.5V±5%  
2.375V  
0.0 mA  
2.625V  
160 mA  
50 ohm termination  
To 2.00V below VCC  
-----  
Output current  
IO  
Low level Output Current 0.0 mA  
-----  
-----  
-----  
±50.0 mA  
70°C  
Operating temperature  
Storage temperature  
TA  
TS  
------  
-----  
0°C  
-55°C  
125°C  
Input: Logic High (ECL) - Disables  
VEE or Open - Enables  
Lead temperature  
Load  
TL  
Soldering, 10 sec.  
-----  
-----  
300°C  
10 ms  
50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required  
Start-up time  
tS  
-----  
-----  
2 ms  
Environmental and Mechanical Characteristics  
Mechanical Shock  
Thermal Shock  
Vibration  
Per MIL-STD-202, Method 213, Condition E  
Per MIL-STD-833, Method 1011, Condition A  
0.060" double amplitude 10 Hz to 55 Hz, 35g’s 55Hz to 2000 Hz  
300°C for 10 seconds  
Soldering Condition  
Hermetic Seal  
Leak rate less than 1 x 10 -8 atm.cc/sec of helium  
Footnotes:  
1) VOL, VOH, referenced to ground  
2) Open to Enable pin also enables the output.  
3) Standard frequency stability (others available)  
4) Jitter performance is frequency dependent. Please contact factory for full Aeroflex characterization.  
RMS jitter bandwidth of 12kHz to 20MHz.  
Creating a Part Number  
SK - B29BX - FREQ  
Package Code  
Tolerance/Performance  
0 ±100ppm 0-70°C  
1 ±50ppm 0-70°C  
HK Leaded 8 pin (14 pin)  
SK 8 pin (14 pin) SMD Gull  
Wing  
7 ±25ppm 0-70°C  
Input Voltage  
9 Customer Specific  
A ±20ppm 0-70°C  
Code Specification  
A
B
3.3V  
2.5V  
B ±50ppm -40 to +85°C  
C ±100ppm -40 to +85°C  
357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881  
Email: nelsales@nelfc.com www.nelfc.com