CRYSTAL CLOCK OSCILLATORS LVCMOS Data Sheet K2385 Rev. A SC-C1420 Series Description The SC-C1420 Series of quartz crystal oscillators provide enable/disable 3-state LVCMOS compatible signals for bus connected systems. Supplying Pin 1 of the SC-C1420 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–4.0MHz to 70.0MHz • User specified tolerance available • Space-saving alternative to discrete component oscillators • 1.8 Volt operation • High shock resistance, to 1000g • 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 Electrical Connection Pin Connection 1 2 3 4 Enable/Disable Ground Output VDD 357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone 262/763-3591 FAX 262/763-2881 Email: [email protected] www.nelfc.com Data Sheet K2385 CRYSTAL CLOCK OSCILLATORS SC-C1420 Series LVCMOS Rev. A Continued 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 @ 600µA VOH @ 600µA tr,tf 10-90%VO --------------------------------dF/F Overall conditions including: voltage, calibration, temp.. 10 year aging, shock, vibration Min 4.0MHz 45/55% ----VDD-0.2V ------------2.0V -----100ppm Typical --------------------3 psec ----------------- Max 70.0MHz 55/45% 0.2V ----8.0 ns ----25 ns ----0.8V +100ppm General Characteristics Parameter Supply Voltage (3) VDD Supply Current Output current Operating temperature Storage temperature Power Dissipation Solder temperature Load Start-up Time Symbol IDD IO TA TS PD TL ----ts Conditions 1.8V±0.1V 1.7V No Load Low level Output Current -------------4 minutes ----20MHz or greater Less than 20MHz Min Typical 1.8V 0.0 mA 0.0 mA 0°C -55°C --------------------- Max 1.9V ------------------------------------- 40 mA ±16.0 mA 70°C 125°C 76 mW 253°C 15pf 10 ms 2 ms Environmental and Mechanical Characteristics Mechanical Shock Thermal Shock Vibration Hermetic Seal Per MIL-STD-202, Method 213, Condition E Per MIL-STD-883, Method 1011, Condition A 0.060" double amplitude 10 Hz to 55 Hz, 35g’s 55Hz to 2000 Hz 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. 3) External high frequency power supply decoupling required. Creating a Part Number SC - C142X - FREQ Package Code SC 4 pad 5x7mm SMD Input Voltage Code Specification A 3.3V B 2.5V C 1.8V 5V 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: [email protected] www.nelfc.com