NBC12439FA(2009) Ver la hoja de datos (PDF) - ON Semiconductor

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Fabricante

NBC12439FA
(Rev.:2009)

3.3V/5V Programmable PLL Synthesized Clock Generator

ON Semiconductor 

NBC12439, NBC12439A

3.3V/5V Programmable PLL

Synthesized Clock

Generator

50 MHz to 800 MHz

Description

The NBC12439 and NBC12439A are general purpose, PLL based

synthesized clock sources. The VCO will operate over a frequency

range of 400 MHz to 800 MHz. The VCO frequency is sent to the

N−output divider, where it can be configured to provide division ratios

of 1, 2, 4 or 8. The VCO and output frequency can be programmed

using the parallel or serial interfaces to the configuration logic. Output

frequency steps of 16 MHz, 8 MHz, 4 MHz, or 2 MHz can be

achieved using a 16 MHz crystal, depending on the output divider

settings. The PLL loop filter is fully integrated and does not require

any external components.

Features

• Best−in−Class Output Jitter Performance, ±20 ps Peak−to−Peak

• 50 MHz to 800 MHz Programmable Differential PECL Outputs

• Fully Integrated Phase−Lock−Loop with Internal Loop Filter

• Parallel Interface for Programming Counter and Output Dividers

During Powerup

• Minimal Frequency Overshoot

• Serial 3−Wire Programming Interface

• Crystal Oscillator Inputs 10 MHz to 20 MHz

• Operating Range: VCC = 3.135 V to 5.25 V

• CMOS and TTL Compatible Control Inputs

• Pin and Function Compatible with Motorola MC12439 and

MPC9239

• Powerdown of PECL Outputs (B16)

• 0°C to 70°C Ambient Operating Temperature (NBC12439)

• −40°C to 85°C Ambient Operating Temperature (NBC12439A)

• Pb−Free Packages are Available

http://onsemi.com

MARKING

DIAGRAMS

1 28

PLCC−28

FN SUFFIX

CASE 776

NBC12439xG

AWLYYWW

LQFP−32

FA SUFFIX

CASE 873A

NBC12

439x

AWLYYWWG

1 32

QFN32

MN SUFFIX

CASE 488AM

1

NBC12

439x

AWLYYWWG

G

x

= Blank or A

A

= Assembly Location

WL, L = Wafer Lot

YY, Y = Year

WW, W = Work Week

G or G = Pb−Free Package

(Note: Microdot may be in either location)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 17 of this data sheet.

© Semiconductor Components Industries, LLC, 2009

1

January, 2009 − Rev. 14

Publication Order Number:

NBC12439/D

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