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SJ-B2870 Datasheet

CRYSTAL CLOCK OSCILLATORS

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CRYSTAL CLOCK OSCILLATORS
Differential Positive ECL (DPECL)
SJ-B2870 Series
Data Sheet 0225A
Rev. C
Description
The SJ-B2870 Series of quartz crystal oscillators provide MECL 10K and 10KH series compatible signals
in a ceramic SMD package. Systems designers may now specify space-saving, cost-effective packaged
PECL oscillators to meet their timing requirements.
Features
• Wide frequency range–50.0MHz to 100.0MHz
• User specified tolerance available
• Will withstand SMD reflow temperatures of 253°C
for 4 minutes maximum
• Space-saving alternative to discrete component
oscillators
• High shock resistance, to 1000g
• 2.5 volt operation
• Metal lid electrically connected to ground to
reduce EMI
• MECL 10K and 10KH series compatible output on
Pin 3, complement on Pin 1
• 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
• No internal PLL avoids cascading PLL problems
• High frequencies due to proprietary design
• Gold plated leads - Solder dipped leads available
upon request
• RoHS Compliant, Lead Free Construction
(unless solder dipped leads are supplied)
Electrical Connection
Pin Connection
1 Output Complement
2 VEE /Ground
3 Output
4 VCC
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




NEL

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SJ-B2870 Datasheet

CRYSTAL CLOCK OSCILLATORS

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CRYSTAL CLOCK OSCILLATORS
Data Sheet 0225A
SJ-B2870 Series Continued
Differential Positive ECL (DPECL)
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter
Frequency
Duty Cycle
Logic 0 (2)
Logic 1(2)
Rise & Fall Time
Tpd (4)
Jitter, RMS(3)
Frequency Stability (1)
Symbol
Conditions
Min
----- -----
50.0MHz
----- @ VCC-1.29V 45/55%
VOL -----
VCC-1.95V
VOH -----
VCC-1.12V
tr,tf 20-80%VO with 50 ohm load to VCC-2V -----
----- -----
-0.5 ns
----- -----
-----
dF/F Overall conditions including:
-100ppm
voltage, calibration, temp.,
10 yr aging, shock, vibration
Typical
-----
-----
-----
-----
1.0 ns
-----
-----
-----
General Characteristics
Parameter
Supply Voltage
Supply Current
Output current
Operating temperature
Storage temperature
Power Dissipation
Lead temperature
Load
Start-up time
Symbol
Conditions
Min
VCC 2.5V±5%
2.375V
ICC
50 ohm termination
0.0 mA
To 2.00V below VCC
IO Low level Output Current 0.0 mA
TA ------
0°C
TS -----
-55°C
PD -----
-----
TL
Soldering, 10 sec.
-----
50 Ohm to VCC-2V or Thevenin Equivalent, Bias Required
tS -----
-----
Environmental and Mechanical Characteristics
Typical
2.5V
-----
-----
-----
-----
-----
-----
2 ms
Mechanical Shock
Thermal Shock
Vibration
Soldering Condition
Hermetic Seal
ESD Sensitivity
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
Leak rate less than 1 x 10 -8 atm.cc/sec of helium
Human Body Model per ON Semiconductor 10kH series ECL: 500V min.
Footnotes:
1) Standard frequency stability (±20,±25,±50ppm & others available)
2) VOL, VOH, referenced to ground (VEE) with VCC = 3.3V
3) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization.
RMS jitter bandwidth of 12kHz to 20MHz.
4) Tpd is phase shift between the falling edge of pin 3 at VCC-1.29V and rising edge of pin 1 at VCC-1.29V.
Rev. C
Max
100.0MHz
55/45%
VCC-1.50V
VCC-0.74V
2.0 ns
+0.5 ns
3 psec
+100ppm
Max
2.625V
50 mA
±50.0 mA
70°C
125°C
131 mW
300°C
10 ms
Package Code
SJ 4 J Lead SMD
Input Voltage
Code Specification
A 3.3V
B 2.5V
5V
Creating a Part Number
SJ - B287X - FREQ
Tolerance/Performance
0 ±100ppm 0-70°C
1 ±50ppm 0-70°C
7 ±25ppm 0-70°C
9 Customer Specific
A ±20ppm 0-70°C
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


Part Number SJ-B2870
Description CRYSTAL CLOCK OSCILLATORS
Maker NEL
Total Page 2 Pages
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