NBC12439 datasheet(1/21 Pages) ONSEMI

Part #	NBC12439

Description	3.3V/5V Programmable PLL Synthesized Clock Generator

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Manufacturer	ONSEMI [ON Semiconductor]

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January, 2009 − Rev. 14

1

Publication Order Number:

NBC12439/D

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

MARKING

DIAGRAMS

PLCC−28

FN SUFFIX

CASE 776

NBC12439xG

AWLYYWW

128

LQFP−32

FA SUFFIX

CASE 873A

http://onsemi.com

See detailed ordering and shipping information in the package

dimensions section on page 17 of this data sheet.

ORDERING INFORMATION

x

= Blank or A

A

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W = Work Week

G or G = Pb−Free Package

NBC12

439x

AWLYYWWG

QFN32

MN SUFFIX

CASE 488AM

32

1

NBC12

439x

AWLYYWWG

G

1

(Note: Microdot may be in either location)

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Manufacturer	Part #	Datasheet	Description
ON Semiconductor	NBC12439	143Kb / 20P	3.3 V/5 V Programmable PLL Synthesized Clock Generator May, 2003 - Rev. 2
	NBC12439	348Kb / 20P	3.3V/5V Programmable PLL Synthesized Clock Generator February, 2007 -- Rev. 10
	NBC12439A	348Kb / 20P	3.3V/5V Programmable PLL Synthesized Clock Generator February, 2007 -- Rev. 10
	NBC12439AFA	348Kb / 20P	3.3V/5V Programmable PLL Synthesized Clock Generator February, 2007 -- Rev. 10
	NBC12439AFAG	348Kb / 20P	3.3V/5V Programmable PLL Synthesized Clock Generator February, 2007 -- Rev. 10

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Manufacturer	Part #	Datasheet	Description
ON Semiconductor	NBC12430	249Kb / 20P	3.3V/5V Programmable PLL Synthesized Clock Generator October, 2010 ??Rev. 13
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