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-B1420 Series
Description
The SC-B1420 Series of quartz crystal oscillators provide enable/disable 3-state LVCMOS compatible
signals for bus connected systems. Supplying Pin 1 of the SC-B1420 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
2.5 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
Electrical Connection
Pin Connection
1 Enable/Disable
2 Ground
3 Output
4 V
DD
CRYSTAL CLOCK OSCILLATORS
Data Sheet K2204
Rev. -
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-B1420 Series Continued
LVCMOS
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)
-----
-----
-----
3 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
-----
2.375V 2.5V
2.625V
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
-----
-----
-----
144 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 Wavecrest characterization.
3) External high frequency power supply decoupling required.
Rev. -
CRYSTAL CLOCK OSCILLATORS
SC - B142X - 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
B 2.5V
C 100ppm -40 to +85C
5V
Creating a Part Number
Data Sheet K2204
PDF 
ZIP