NEL SJ1451, SJ1457, SJ1459, SJ145A, SJ145B 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

CMOS

SJ-A1450 Series

Description

The SJ-A1450 Series of quartz crystal oscillators provide enable/disable 3-state CMOS compatible signals
for bus connected systems. Supplying Pin 1 of the SJ-A1450 units with a logic “1" or open enables its pin 3
output. In the disabled mode, pin 3 presents a high impedance to the load. All units are designed to
survive wave soldering operations without damage.

Features

• Wide frequency range– 4.0MHz to 40.0MHz

• 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 3000g

• Metal lid electrically connected to ground to reduce
EMI

• 3.3 Volt operation

• Low Jitter

• High Q Crystal actively tuned oscillator circuit

• Power supply decoupling internal

• No internal PLL avoids cascading PLL problems

• Low power consumption

• Gold plated leads

• TTL compatible (HCT) at specified supply voltage

Electrical Connection

Pin Connection

1 Enable/Disable

Input
2 Ground
3 Output
4 V

DD

CRYSTAL CLOCK OSCILLATORS

Data Sheet 0001B

Rev. J

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

Email: [e-mail]

www.nelfc.com

SJ-A1450 Series Continued
CMOS

Operating Conditions and Output Characteristics

Electrical Characteristics

Parameter Symbol Conditions Min Typical Max

Frequency ----- ----- 4.0MHz ----- 40.0MHz
Duty Cycle ----- @ V

DD

/2 45/55% ----- 55/45%
Logic 0 VOL @ 600µA ----- ----- 0.2V
Logic 1

VOH @ 600µA VDD-0.2V ----- ----­Rise & Fall Time tr,tf 10-90% ----- ----- 3 ns
Tpz ----- ----- ----- ----- 25 ns
Jitter, RMS

(2)

----- ----- ----- ----- 8 psec

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 VDD ----- 3.135V 3.3V 3.465V
Supply Current IDD No Load 0.0 mA ----- 30mA
Output current IO ----- 0.0 mA ----- ±16.0 mA
Operating temperature TA ----- 0°C ----- 70°C
Storage temperature TS ----- -55°C ----- 125°C
Power Dissipation P

D

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

S

----- ----- 2 ms 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 characterization.

Test Load:

Rev. J

CRYSTAL CLOCK OSCILLATORS

SJ- A145X - FREQ

Package Code

Tolerance/Performance

SJ 4 J Lead 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 0001B