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
1
2
3
4
Connection
Enable/Disable
Ground
Output
V
DD
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-C1420 Series
LVCMOS
Continued
Data Sheet K2385
Rev. A
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter
Frequency
Duty Cycle
Logic 0
Logic 1
Rise & Fall Time
Jitter, RMS
(2)
T
pz
Enable Voltage
Disable Voltage
Frequency Stability
(1)
Symbol
Conditions
-----
-----
-----
@ V
DD
/2
V
OL
@ 600µA
V
OH
@ 600µA
tr,tf
10-90%V
O
-----
-----
-----
-----
-----
-----
-----
-----
dF/F
Overall conditions including:
voltage, calibration, temp..
10 year aging, shock, vibration
Min
4.0MHz
45/55%
-----
V
DD
-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)
V
DD
Supply Current
Output current
Operating temperature
Storage temperature
Power Dissipation
Solder temperature
Load
Start-up Time
Symbol
I
DD
I
O
T
A
T
S
P
D
T
L
-----
t
s
Conditions
1.8V±0.1V
1.7V
No Load
Low level Output Current
------
-----
-----
4 minutes
-----
20MHz or greater
Less than 20MHz
Min
1.8V
0.0 mA
0.0 mA
0°C
-55°C
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
-----
Typical
1.9V
40 mA
±16.0 mA
70°C
125°C
76 mW
253°C
15pf
10 ms
2 ms
Max
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
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
Input Voltage
Code Specification
A
3.3V
B
2.5V
C
1.8V
5V
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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