SC-B1440-FREQ

CRYSTAL CLOCK OSCILLATORS LVCMOS Data Sheet 0540B Rev. - SC-B1440 Series Description The SC-B1440 Series of quartz crystal oscillators provide enable/disable 3-state LVCMOS compatible signals for bus connected systems. Supplying Pin 1 of the SC-B1440 units with a logic “1" or open enables its Pin 3 output. In the disable mode, Pin 3 presents a high impedance to the load. Features • Wide frequency range–220.0MHz to 250.0MHz (Contact factory for other frequencies) • User specified tolerance available • Will withstand vapor phase temperatures of 253°C for 4 minutes maximum • Space-saving alternative to discrete component oscillators • 2.5 Volt operation • High shock resistance, to 1000g • Low Jitter - Wavecrest jitter characterization available Electrical Connection Pin 1 2 3 4 Connection Enable/Disable Ground Output VDD • 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 • Metal lid electrically connected to ground to reduce EMI • Gold plated pads • RoHS Compliant, Lead Free Construction 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 CRYSTAL CLOCK OSCILLATORS SC-B1440 Series LVCMOS Continued Data Sheet 0540B Rev. - Operating Conditions and Output Characteristics Electrical Characteristics Parameter Frequency Duty Cycle Logic 0 Logic 1 Rise & Fall Time Jitter, RMS(2) Tpz Enable Voltage Disable Voltage Frequency Stability (1) Symbol Conditions ------------@ VDD/2 45/55% VOL @ 600µA @ 600µA VOH tr,tf 10-90%VO ----Overtone ------------------------dF/F Overall conditions including: voltage, calibration, temp., 10 yr aging, shock, vibration Min 220.0MHz --------VDD-0.2V ------------1.6V -----100ppm Typical ----55/45% --------------------------------0.2V ----2.0 ns 3 psec 100 ns ----0.4V +100ppm Max 250.0MHz General Characteristics Parameter Supply Voltage (3) Supply Current Output current Operating temperature Storage temperature Power Dissipation Lead temperature Load Start-up Time Symbol VDD IDD IO TA TS PD TL ----ts Conditions ----No Load Low level Output Current -------------Soldering, 10 sec. --------Min 2.375V 0.0 mA 0.0 mA 0°C -55°C ----------------Typical 2.5V 85 mA ----------------------------Max 2.625V 110 mA ±25.0 mA 70°C 125°C 158 mW 300°C 15pf 10 ms Environmental and Mechanical Characteristics Mechanical Shock Thermal Shock Vibration Soldering Condition Hermetic Seal 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 Footnotes: 1) Standard frequency stability (±20,±25,±50ppm & others available) 2) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization. RMS jitter bandwidth of 12kHz to 20MHz. 3) Internal high frequency power source decoupling. Test Load: Creating a Part Number SC - B144X - FREQ Package Code SC 4 pad 5x7mm SMD 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 Input Voltage Code Specification A 3.3V B 2. 5V 5V 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