SC-A142A-FREQ [NEL]
Frequency Range: 1.0 MHz to 80.0 MHz; 频率范围： 1.0 MHz到80.0 MHz的
| 型号： | SC-A142A-FREQ |
| 厂家： | 
NEL FREQUENCY CONTROLS,INC |
| 描述： | Frequency Range: 1.0 MHz to 80.0 MHz |
| 文件： | 总2页 (文件大小：206K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LVCMOS
SC-B1420 Series Rev -
SC-B1420
Series
Frequency Range: 1.0 MHz to 80.0 MHz
Description
The SC-B1420 Series of quartz crystal oscillators provide enable/disable 3ꢀstate LVCMOS compatible signals
for bus connected systems. Supplying Pin ± of the SCꢀB±420 units with a logic “±” or open enables its Pin 3
output. In the disable mode, Pin 3 presents a high impedance to the load.
Features
• Spaceꢀsaving alternative to discrete component
oscillators
• High Reliability ꢀ NEL HALT/HASS qualified for
crystal oscillator startꢀup conditions
• Low jitter ꢀ Wavecrest jitter characterization availꢀ
able
Size, mm
5 x 7
I/O
4 pad
Supply Voltage
3.3V / 2.5V / 5V
• 2.5 Volt operation
• High shock resistance, to ±000g
• No internal PLL avoids cascading PLL problems
• Metal lid electrically connected to ground to
reduce EMI
• Gold plated pads
• RoHS Compliant, Lead Free Construction
• Wide frequency range—±.0 MHz to +0.0 MHz
• User specified tolerance available
• Will withstand vapor phase temperatures of 253ꢁC
for 4 minutes maximum
Creating a Part Number
SC - B142X - FREQ
Package Code
SC 4 pad 5x7 mm SMD
Tolerance/Performance
0 ±±00 ppm 0ꢀ70ꢁC
± ±50 ppm 0ꢀ70ꢁC
Input Voltage
7 ±25 ppm 0ꢀ70ꢁC
Code
A
B
Specification
3.3 V
2.5 V
5 V
9 Customer Specific
A ±20 ppm 0ꢀ70ꢁC
B ±50 ppm ꢀ40 to ꢂ+5ꢁC
C ±±00 ppm ꢀ40 to ꢂ+5ꢁC
Drawing Specifications
Electrical Connection
Pin
±
Connection
Enable/Disable
Ground
2
3
4
Output
Dimensions shown in inches and millimeters.
All tolerances are 0.00ꢀ inches ꢁ 0.12ꢂmmꢃ unless otherwise specified.
VDD
For the most up to date speci-
fications on each NEL prod-
uct, log on to our website—
www.nelfc.com
357 Beloit Street, P.O. Box 457, Burlington, WI 53±05ꢀ0457 U.S.A. Phone: 262ꢀ763ꢀ359±
Fax: 262ꢀ763ꢀ2++± Email: nelsales@nelfc.com www.nelfc.com
LVCMOS
SC-B1420 Series Rev -
Frequency Range: 1.0 MHz to 80.0 MHz
Operating Conditions and Output Characteristics
Electrical Characteristics
Parameter
Symbol
Conditions
Min
±.0 MHz
45/55%
—
Typical
Max
Frequency
—
—
—
—
—
+0.0 MHz
55/45%
0.2 V
—
Duty Cycle
Logic 0
Logic ±
Rise & Fall Time
Jitter, RMS(2)
Tpz
Enable Voltage
Disable Voltage
Frequency Stability(±)
@ VDD
/2
VOL
VOH
@ 600 µA
—
@ 600 µA
VDD
—
ꢀ0.2 V
t , t
±0ꢀ90% VO
—
—
+.0 ns
—
25 ns
—
0.+ V
ꢂ±00 ppm
r f
—
—
—
—
—
3 psec
—
—
—
—
2.0 V
—
—
—
—
—
dF/F
Overall conditions including:
voltage, calibration, temp.,
±0 yr aging, shock, vibration
ꢀ±00 ppm
—
General Characteristics
Parameter
Symbol
Conditions
Min
Typical
Max
Supply Voltage(3)
Supply Current
Output Current
Operating Temperature
Storage Temperature
Power Dissipation
Lead Temperature
Load
VDD
IDD
IO
TA
TS
PD
TL
—
tS
2.5V±5%
2.375 V
0.0 mA
0.0 mA
2.5 V
—
2.625 V
40 mA
No Load
Low level Output Current
—
±±6.0 mA
º
º
—
0 C
—
70 C
º
º
—
ꢀ55 C
—
±25 C
—
—
—
—
—
—
—
±05 mW
º
Soldering, ±0 sec.
—
—
300 C
—
±5 pf
20 MHz or greater
Less than 20 MHz
—
Startꢀup Time
±0 ms
2 ms
—
Environmental and Mechanical Characteristics
Mechanical Shock
Thermal Shock
Vibration
Per MILꢀSTDꢀ202, Method 2±3, Condition E
Per MILꢀSTDꢀ+33, Method ±0±±, Condition A
0.060" double amplitude ±0 Hz to 55 Hz, 35g’s 55 Hz to 2000 Hz
º
Soldering Condition 300 C for ±0 seconds
Hermetic Seal
Leak rate less than ± x ±0ꢀ+ atm.cc/sec
Footnotes:
±) Standard frequency stability (±20, ±25, ±50 ppm & others available).
2) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization.
3) External high frequency power supply decoupling required.
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