NEL SC1420, SC1421, SC1427, SC1429, SC142B Datasheet
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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
CMOS
SC-1420 Series
Description
The SC-1420 Series of quartz crystal oscillators provide enable/disable 3-state CMOS compatible signals
for bus connected systems. Supplying Pin 1 of the SC-1420 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 80.0MHz
• User specified tolerance available
• Will withstand vapor phase temperatures of 253°C
for 4 minutes maximum
• Space-saving alternative to discrete component
oscillators
• High shock resistance, to 1000g
• Low Jitter
• No internal PLL avoids cascading PLL problems
•
Metal lid electrically connects to ground to reduce
EMI
• Gold plated pads
Electrical Connection
Pin Connection
1 Enable/Disable
2 Ground
3 Output
4 V
DD
CRYSTAL CLOCK OSCILLATORS
Data Sheet K2151
Rev. E
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
SC-1420 Series Continued
CMOS
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter Symbol Conditions Min Typical Max
Frequency ----- ----- 1.0MHz ----- 80.0MHz
Duty Cycle ----- @ VDD/2 45/55% ----- 55/45%
Logic 0 VOL @ 600µA ----- ----- 0.2V
Logic 1 VOH @ 600µA VDD-0.2V ----- ----Rise & Fall Time tr,tf 10-90%VO ----- ----- 8.0 ns
Jitter, RMS
(2)
----- Overtone ----- ----- 5 psec
Fundamental ----- ----- 8 psec
T
pz
----- ----- ----- ----- 25 ns
Enable Voltage ----- ----- 2.0V ----- ----Disable Voltage ----- ----- ----- ----- 0.8V
Frequency Stability
(1)
dF/F Overall conditions including: -100ppm ----- +100ppm
voltage, calibration, temp.,
10 year aging, shock, vibration
General Characteristics
Parameter Symbol Conditions Min Typical Max
Supply Voltage
(3)
VDD ----- 4.75V 5.0V 5.25V
Supply Current IDD No Load 0.0 mA ----- 40 mA
Output current IO Low level Output Current 0.0 mA ----- ±16.0 mA
Operating temperature TA ------ 0°C ----- 70°C
Storage temperature TS ----- -55°C ----- 125°C
Power Dissipation P
D
----- ----- ----- 210 mW
Lead temperature TL Soldering, 10 sec. ----- ----- 300°C
Load ----- ----- ----- ----- 15pf
Start-up Time t
s
20MHz or greater ----- ----- 10 ms
Less than 20MHz ----- ----- 2 ms
Environmental and Mechanical Characteristics
Mechanical Shock Per MIL-STD-202, Method 213, Condition E
Thermal Shock Per MIL-STD-833, Method 1011, Condition A
Vibration 0.060" double amplitude 10 Hz to 55 Hz, 35g’s 55Hz to 2000 Hz
Soldering Condition 300°C for 10 seconds
Hermetic Seal 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 characterization.
3) External high frequency power supply decoupling required.
Rev. E
CRYSTAL CLOCK OSCILLATORS
SC - A142X - FREQ
Package Code
Tolerance/Performance
SC 4 pad 5x7mm SMD 0 ±100ppm 0-70°C
1 ±50ppm 0-70°C
7 ±25ppm 0-70°C
Input Voltage
9 Customer Specific
Code Specification A ±20ppm 0-70°C
A 3.3V B ±50ppm -40 to +85°C
5V C ±100ppm -40 to +85°C
Creating a Part Number
Data Sheet K2151
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