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MC12439 Datasheet High Frequency Pll Clock Generator

Manufacturer: Motorola Semiconductor (now NXP Semiconductors)

Overview: MOTOROLA SEMICONDUCTOR TECHNICAL DATA High Frequency Clock Generator The MC12439 is a general purpose synthesized clock source targeting applications that require both serial and parallel interfaces. Its internal VCO will operate over a range of frequencies from 400 to 800MHz. The differential PECL output can be configured to be the VCO frequency divided by 1, 2, 4, or 8. With the output configured to divide the VCO frequency by 1, and with a 16.66MHz external quartz crystal used to provide the reference frequency, the output frequency can be specified in 16.66MHz steps. MC12439 HIGH FREQUENCY PLL CLOCK GENERATOR • • • • • • • • • 50 to 800MHz Differential PECL Outputs ±25ps Typical Peak–to–Peak Output Jitter Minimal Frequency Over–Shoot Synthesized Architecture Serial 3–Wire Interface Parallel Interface for Power–Up Quartz Crystal Interface 28–Lead PLCC Package Operates from 3.3V or 5.

General Description

The internal oscillator uses the external quartz crystal as the basis of its frequency reference.

The output of the reference oscillator is sent directly to the phase detector.

With a 16.66MHz crystal, this provides a reference frequency of 16.66MHz.

Key Features

  • ill latch the information present on the M[6:0] and N[1:0] inputs into the M and N counters. When the P_LOAD signal is LOW the input latches will be transparent and any changes on the M[6:0] and N[1:0] inputs will affect the FOUT output pair. To use the serial port the S_CLOCK signal samples the information on.

More Datasheets from Motorola Semiconductor (now NXP Semiconductors)

Part Number Description
MC12430 High Frequency Clock Generator
MC12429 HIGH FREQUENCY PLL CLOCK GENERATOR
MC12002 ANALOG MIXER
MC12009 MECL PLL COMPONENTS DUAL MODULUS PRESCALER
MC12011 MECL PLL COMPONENTS DUAL MODULUS PRESCALER
MC12012 MECL PLL COMPONENTS
MC12013 MECL PLL COMPONENTS DUAL MODULUS PRESCALER
MC12014 Counter Control Logic
MC12015 MECL PLL COMPONENTS DUAL MODULUS PRESCALER
MC12016 MECL PLL COMPONENTS DUAL MODULUS PRESCALER

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