NEL SC144B, SC144C, SC1440, SC1441, SC1447 Datasheet

357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone [phone] FAX [phone]

Email: [e-mail]

www.nelfc.com

LVCMOS

SC-A1440 Series

Description

The SC-A1440 Series of quartz crystal oscillators provide enable/disable 3-state LVCMOS compatible
signals for bus connected systems. Supplying Pin 1 of the SC-A1440 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–80.0MHz to 180.0MHz

• User specified tolerance available

• Will withstand vapor phase temperatures of 253°C
for 4 minutes maximum

• Space-saving alternative to discrete component
oscillators

• 3.3 Volt operation

• High shock resistance, to 1000g

• Low Jitter - Wavecrest jitter characterization
available

• High Reliability - NEL HALT/HASS qualified for
crystal oscillator start-up conditions

• High Q Crystal actively tuned oscillator circuit

• Power supply decoupling internal

• No internal PLL avoids cascading PLL problems

• High frequencies due to proprietary design

•

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 0007A

Rev. K

357 Beloit Street, P.O. Box 457, Burlington, WI 53105-0457 U.S.A. Phone [phone] FAX [phone]

Email: [e-mail]

www.nelfc.com

SC-A1440 Series Continued

LVCMOS

Operating Conditions and Output Characteristics

Electrical Characteristics

Parameter Symbol Conditions Min Typical Max

Frequency ----- ----- 80.0MHz ----- 180.0MHz
Duty Cycle ----- @ VDD/2 45/55% ----- 55/45%
Logic 0 VOL @ 600µA ----- 0.1V 0.2V
Logic 1 VOH @ 600µA VDD-0.2V VDD-0.1V ----­Rise & Fall Time tr,tf 10-90%VO ----- 1.0 ns 2.0 ns
Jitter, RMS

(2)

----- Overtone ----- ----- 3 psec

T

pz

----- ----- ----- ----- 100 ns
Enable Voltage ----- ----- 2.0V ----- ----­Disable Voltage ----- ----- ----- ----- 0.8V
Frequency Stability

(1)

dF/F Overall conditions including: -100ppm ----- +100ppm

voltage, calibration, temp.,
10 yr aging, shock, vibration

General Characteristics

Parameter Symbol Conditions Min Typical Max

Supply Voltage

(3)

VDD ----- 3.00V 3.3V 3.60V
Supply Current IDD No Load 0.0 mA 40 mA 60 mA
Output current IO Low level Output Current 0.0 mA ----- ±25.0 mA
Operating temperature TA ------ 0°C ----- 70°C
Storage temperature TS ----- -55°C ----- 125°C
Power Dissipation P

D

----- ----- ----- 216 mW
Lead temperature TL Soldering, 10 sec. ----- ----- 300°C
Load ----- ----- ----- ----- 15pf
Start-up Time t

s

----- ----- ----- 10 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 of helium

Footnotes:

1) Standard frequency stability (±20,±25,±50ppm & others available)

2) Jitter performance is frequency dependent. Please contact factory for full Wavecrest characterization.

3) Internal high frequency power source decoupling.

Test Load:

Rev. K

CRYSTAL CLOCK OSCILLATORS

SC - A144X - 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 0007A