NELFC HK291C, HK291B, HK291A, HK2919, HK2917 Datasheet
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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
Differential Positive ECL (DPECL)
SK-2910 Series
Description
The SK-2910 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–122.0MHz to 300.0MHz
• User specified tolerance available
• Case at electrical ground
• Will withstand vapor phase temperatures of 253°C
for 4 minutes maximum
• All metal, resistance weld, hermetically sealed
package
• High shock resistance, to 1500g
• Low Jitter
• Overtone technology
• High Q Crystal actively tuned oscillator circuit
• Power supply decoupling internal
• Dual ground plane for added stability
• No internal PLL avoids cascading PLL problems
• High frequencies due to proprietary design
Electrical Connection
Pin Connection
1 V
CC
2 VEE Case
6 V
EE
Case
7 Output
8 /Output
9 V
EE
Case
13 V
EE
Case
14 Enable/Disable
CRYSTAL CLOCK OSCILLATORS
Data Sheet 0012G
Rev. 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
SK-2910 Series Continued
Differential Positive ECL (DPECL)
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter Symbol Conditions Min Typical Max
Frequency ----- ----- 122.0MHz ----- 300.0MHz
Duty Cycle ----- @ 50% points 45/55% ----- 55/45%
Logic 0
(2)
VOL ----- VCC-1.95V ----- VCC-1.60V
Logic 1
(2)
VOH ----- VCC-1.02V ----- VCC-0.74V
Rise & Fall Time tr,tf 20-80%VO with 50 ohm load to VCC-2V ----- 350 psec 600 psec
Jitter, RMS
(3)
----- ----- ----- ----- 5 psec
Enable Voltage
(4)
---- with VEE=0V 0V ----- 1.0V
Disable Voltage ----- with VEE=0V 3.0V ----- VCC
Frequency Stability
(1)
dF/F Overall conditions including: -100ppm ----- +100ppm
voltage, calibration, temp.,
10 yr aging, shock, vibration
General Characteristics
Parameter Symbol Conditions Min Typical Max
Supply Voltage VCC ----- 4.75V 5.0V 5.25V
Supply Current ICC 50 ohm termination 0.0 mA ----- 120 mA
To 2.00V below V
CC
Output current IO Low level Output Current 0.0 mA ----- ±50.0 mA
Operating temperature TA ------ 0°C ----- 70°C
Storage temperature TS ----- -55°C ----- 125°C
Input: Logic High (ECL) - Disables
VEE or Open - Enables
Lead temperature TL Soldering, 10 sec. ----- ----- 300°C
Load 50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required
Start-up time t
S
----- ----- 2 ms 10 ms
Environmental and Mechanical Characteristics
Mechanical Shock Per MIL-STD-202, Method 213, Condition E
Thermal Shock Per MIL-STD-833, Method 1011, Condition A
Vibration 0.060" double amplitude 10 Hz to 55 Hz, 35g’s 55Hz to 2000 Hz
Soldering Condition 300°C for 10 seconds
Hermetic Seal Leak rate less than 1 x 10 -8 atm.cc/sec of helium
Footnotes:
1) Standard frequency stability (±20,±25,±50ppm & others available)
2) VOL, VOH, referenced to ground
3) Jitter performance is frequency dependent. Please contact factory for full characterization.
4) Open to Enable pin also enables to output.
Rev. C
CRYSTAL CLOCK OSCILLATORS
SK - A291X - FREQ
Package Code
Tolerance/Performance
HK Leaded 8 pin (14pin) 0 ±100ppm 0-70°C
SK 8 pin (14 pin) SMD Gull 1 ±50ppm 0-70°C
Wing 7 ±25ppm 0-70°C
Input Voltage
9 Customer Specific
Code Specification A ±20ppm 0-70°C
A 3.3V B ±50ppm -40 to +85°C
5V C ±100ppm -40 to +85°C
Creating a Part Number
Data Sheet 0012G
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