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 range1.0MHz to 80.0MHz
User specified tolerance available
Will withstand vapor phase temperatures of 253C
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 -----
@ V
DD
/2
45/55% -----
55/45%
Logic 0
V
OL
@ 600A -----
-----
0.2V
Logic 1
V
OH
@ 600A
V
DD
-0.2V
-----
-----
Rise & Fall Time
tr,tf
10-90%V
O
----- -----
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)
V
DD
-----
4.75V 5.0V
5.25V
Supply Current
I
DD
No Load
0.0 mA
-----
40 mA
Output current
I
O
Low level Output Current 0.0 mA -----
16.0 mA
Operating temperature
T
A
------
0C -----
70C
Storage temperature
T
S
----- -55C -----
125C
Power Dissipation
P
D
-----
-----
-----
210 mW
Lead temperature
T
L
Soldering, 10 sec. ----- -----
300C
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
300C 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 0-70C
1 50ppm 0-70C
7 25ppm 0-70C
Input Voltage
9 Customer Specific
Code Specification
A 20ppm 0-70C
A 3.3V
B 50ppm -40 to +85C
5V
C 100ppm -40 to +85C
Creating a Part Number
Data Sheet K2151
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