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SC-C1440 Series
LVCMOS SC-C1440 Series Rev G
Frequency Range: 70.0 MHz to 165.0 MHz
Description
The SC-C1440 Series of quartz crystal oscillators provide enable/disable 3-state LVCMOS compatible signals for bus connected systems. Supplying Pin 1 of the SC-C1440 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 / 1.8V / 5V
* High Reliability - NEL HALT/HASS qualified for crystal oscillator start-up conditions * Low jitter - Wavecrest jitter characterization available * Wide frequency range--70.0 MHz to 165.0 MHz * User specified tolerance available * Will withstand vapor phase temperatures of 253C for 4 minutes maximum * Space-saving alternative to discrete component oscillators
* 1.8 Volt operation * High shock resistance, to 1000g * 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
Creating a Part Number SC - C144X - FREQ
Package Code SC 4 pad 5x7 mm SMD Input Voltage Code Specification A 3.3 V B 2.5 V C 1.8 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
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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-C1440 Series Rev G
Frequency Range: 70.0 MHz to 165.0 MHz
Operating Conditions and Output Characteristics Electrical Characteristics Parameter Symbol
-- -- VOL VOH tr, tf -- -- -- -- dF/F
Frequency Duty Cycle Logic 0 Logic 1 Rise & Fall Time Jitter, RMS(2) Tpz Enable Voltage Disable Voltage Frequency Stability(1)
-- @VDD/2 @600 A @600 A 10-90% VO Overtone -- -- -- Overall conditions including: voltage, calibration, temp., 10 yr aging, shock, vibration
Conditions
70.0 MHz 45/55% -- VDD -0.2 V -- -- -- 1.3 V -- -100 ppm
Min
Typical
-- -- -- -- -- -- -- -- -- --
165.0 MHz 55/45% 0.2 V -- 3.5 ns 3 psec 100 ns -- 0.5 V +100 ppm
Max
Supply Voltage Supply Current Output Current Operating Temperature Storage Temperature Power Dissipation Lead Temperature Load Start-up Time
General Characteristics Parameter (3) Symbol
VDD IDD IO TA TS PD TL -- tS
-- No Load Low Level Output Current -- -- -- Soldering, 10 sec. -- --
Conditions
1.71 V 0.0 mA 0.0 mA 0C -55C -- -- -- --
Min
Typical
1.8 V 25 mA -- -- -- -- -- -- --
1.89 V 40 mA 25.0 mA 70C 125C 76 mW 300C 15 pf 10 ms
Max
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 of helium
Footnotes:
1) Standard frequency stability (20, 25, 50 ppm & 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

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