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| www..com SC-B1420 Series LVCMOS SC-B1420 Series Rev Frequency Range: 1.0 MHz to 80.0 MHz Description The SC-B1420 Series of quartz crystal oscillators provide enable/disable 3-state LVCMOS compatible signals for bus connected systems. Supplying Pin 1 of the SC-B1420 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 Size, mm 5x7 I/O 4 pad Supply Voltage 3.3V / 2.5V / 5V * High Reliability - NEL HALT/HASS qualified for crystal oscillator start-up conditions * Low jitter - Wavecrest jitter characterization available * Wide frequency range--1.0 MHz to 80.0 MHz * User specified tolerance available * Will withstand vapor phase temperatures of 253C for 4 minutes maximum * Space-saving alternative to discrete component oscillators * 2.5 Volt operation * High shock resistance, to 1000g * No internal PLL avoids cascading PLL problems * Metal lid electrically connected to ground to reduce EMI * Gold plated pads * RoHS Compliant, Lead Free Construction Creating a Part Number SC - B142X - FREQ Package Code SC 4 pad 5x7 mm SMD Input Voltage Code Specification A 3.3 V B 2.5 V 5V Tolerance/Performance 0 100 ppm 0-70C 1 50 ppm 0-70C 7 25 ppm 0-70C 9 Customer Specific A 20 ppm 0-70C B 50 ppm -40 to +85C C 100 ppm -40 to +85C Drawing Specifications Electrical Connection Pin 1 2 3 4 Connection Enable/Disable Ground Output VDD For the most up to date specifications on each NEL product, log on to our website-- www.nelfc.com Dimensions shown in inches and millimeters. All tolerances are 0.005 inches (0.127mm) unless otherwise specified. 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 LVCMOS SC-B1420 Series Rev Frequency Range: 1.0 MHz to 80.0 MHz Operating Conditions and Output Characteristics Electrical Characteristics Parameter Symbol Frequency Duty Cycle Logic 0 Logic 1 Rise & Fall Time Jitter, RMS(2) Tpz Enable Voltage Disable Voltage Frequency Stability(1) -- -- VOL VOH tr, tf -- -- -- -- dF/F Conditions -- @ VDD/2 @ 600 A @ 600 A 10-90% VO -- -- -- -- Overall conditions including: voltage, calibration, temp., 10 yr aging, shock, vibration Min 1.0 MHz 45/55% -- VDD -0.2 V -- -- -- 2.0 V -- -100 ppm Typical -- -- -- -- -- 3 psec -- -- -- -- Max 80.0 MHz 55/45% 0.2 V -- 8.0 ns -- 25 ns -- 0.8 V +100 ppm General Characteristics Parameter Symbol Supply Voltage(3) Supply Current Output Current Operating Temperature Storage Temperature Power Dissipation Lead Temperature Load Start-up Time VDD IDD IO TA TS PD TL -- tS Conditions 2.5V5% No Load Low level Output Current -- -- -- Soldering, 10 sec. -- 20 MHz or greater Less than 20 MHz Min 2.375 V 0.0 mA 0.0 mA 0C -55C -- -- -- -- -- Typical 2.5 V -- -- -- -- -- -- -- -- -- Max 2.625 V 40 mA 16.0 mA 70C 125C 105 mW 300C 15 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 55 Hz 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, 50 ppm & others available). 2) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization. 3) External high frequency power supply decoupling required. |
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