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NBC12439FNON N/a60avai3.3V / 5V Programmable PLL Synthesized Clock Generator with Power Down (50 to 800MHz)


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NBC12439FN
3.3V / 5V Programmable PLL Synthesized Clock Generator with Power Down (50 to 800MHz)
NBC12439, NBC12439A
3.3V/5V�Programmable PLL
Synthesized Clock
Generator
50 MHz to 800 MHz

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. 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 Interface 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 (�16) 0°C to 70°C Ambient Operating Temperature (NBC12439) −40°C to 85°C Ambient Operating Temperature (NBC12439A) Pb−Free Packages are Available*
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