NBC12439中文资料PLL 时钟生成器，合成，可编程，3.3 V / 5.0 V，带电源关断（50 至 800 MHz）数据手册ONSEMI规格书

描述 Description

The NBC12439 and NBC12439A are a 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. The PLL loop filter is fully integrated and does not require any external components.The NBC12439 is specified to operate across the commercial temperature range.The NBC12439A is specified to operate across the industrial temperature range.

特性 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 Power-Up
• 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
• Drop in replacement for Motorola MC12439
• Power-Down of PECL Outputs (divide 16)
• Pb-Free Packages are Available

应用 Application

• Clock generation and synthesis for computing and servers.

简介

NBC12439属于集成电路（IC）的时钟发生器PLL频率合成器。由制造生产的NBC12439时钟发生器，PLL，频率合成器时钟发生器、PLL 和频率合成器集成电路 (IC) 可为逻辑器件提供参考信号的稳定定时脉冲，这些器件包括计算机、微控制器、数据通信系统和图形/视频发生器。这些集成电路可能包括缓冲器、驱动器、分频器、倍频器、多路复用器、合成器、扇出分配器和预分频器。