SC-A1421-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-A1421-FREQ
厂家：	NEL FREQUENCY CONTROLS,INC
描述：	Frequency Range: 1.0 MHz to 80.0 MHz 频率范围： 1.0 MHz到80.0 MHz的
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

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

Connection

Enable/Disable

Ground

Output

Dimensions shown in inches and millimeters.

All tolerances are 0.00ꢀ inches ꢁ 0.12ꢂmmꢃ unless otherwise specified.

V_DD

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⁾

T_pz

Enable Voltage

Disable Voltage

Frequency Stability^(±)

@ V_DD

V_OL

V_OH

@ 600 µA

—

@ 600 µA

V_DD

—

ꢀ0.2 V

t , t

±0ꢀ90% V_O

—

+.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

V_DD

I_DD

I_O

T_A

T_S

P_D

T_L

—

t_S

2.5V±5%

2.375 V

0.0 mA

2.5 V

—

2.625 V

40 mA

No Load

Low level Output Current

—

±±6.0 mA

—

0 C

—

70 C

—

ꢀ55 C

—

±25 C

—

±05 mW

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

Soldering Condition 300 C for ±0 seconds

Hermetic Seal

Leak rate less than ± x ±0^ꢀ+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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