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| CRYSTAL CLOCK OSCILLATORS LVCMOS Data Sheet 0335A Rev. D SC-D1420 Series Description The SC-D1420 Series of quartz crystal oscillators provide enable/disable 3-state LVCMOS compatible signals for bus connected systems. Supplying Pin 1 of the SC-D1420 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-1.0MHz to 40.0MHz * User specified tolerance available * Will withstand vapor phase temperatures of 253C for 4 minutes maximum * Space-saving alternative to discrete component oscillators * 1.2 Volt operation * High shock resistance, to 1000g * Power supply decoupling internal 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 * Low Jitter - Wavecrest jitter characterization available * No internal PLL avoids cascading PLL problems * 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-D1420 Series LVCMOS Continued Data Sheet 0335A Rev. D 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 VOL @ 600A @ 600A VOH tr,tf 10-90%VO --------------------------------dF/F Overall conditions including: voltage, calibration, temp.. 10 year aging, shock, vibration Min 1.0MHz 45/55% ----VDD-0.2V ------------2.0V -----100ppm Typical --------------------3 psec ----------------Max 40.0MHz 55/45% 0.2V ----10.0 ns ----25 ns ----0.8V +100ppm 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. ----20MHz or greater Less than 20MHz Min 1.14V 0.0 mA 0.0 mA 0C -55C --------------------Typical 1.2V ------------------------------------Max 1.26V 2.0 mA 600A 70C 125C 2.52 mW 300C 6 pf 10 ms 2 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 300C for 10 seconds Leak rate less than 1 x 10-8 atm.cc/sec 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. Creating a Part Number SC -D142X - FREQ Package Code SC 4 pad 5x7mm SMD Tolerance/Performance 0 100ppm 0-70C 1 50ppm 0-70C 7 25ppm 0-70C 9 Customer Specific A 20ppm 0-70C B 50ppm -40 to +85C C 100ppm -40 to +85C Input Voltage Code Specification D 1.2V 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 |
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