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 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 -----
@ V
DD
/2
45/55% -----
55/45%
Logic 0
V
OL
@ 600µA -----
-----
0.2V
Logic 1
V
OH
@ 600µA
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
------
0°C -----
70°C
Storage temperature
T
S
----- -55°C -----
125°C
Power Dissipation
P
D
-----
-----
-----
210 mW
Lead temperature
T
L
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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