MC100LVEL34数据手册集成电路（IC）的时钟发生器PLL频率合成器规格书PDF

描述 Description

The MC100LVEL34 is a low skew 2, 4, 8 clock generation chip designed explicitly for low skew clock generation applications. The internal dividers are synchronous to each other, therefore, the common output edges are all precisely aligned. The VBB pin, an internally generated voltage supply, is available to this device only. For single−ended input conditions, the unused differential input is connected to VBB as a switching reference voltage. VBB may also rebias AC coupled inputs. When used, decouple VBB and VCC via a 0.01 F capacitor and limit current sourcing or sinking to 0.5 mA. When not used, VBB should be left open.The common enable (EN bar) is synchronous so that the internal dividers will only be enabled/disabled when the internal clock is already in the LOW state. This avoids any chance of generating a runt clock pulse on the internal clock when the device is enabled/disabled as can happen with an asynchronous control. An internal runt pulsecould lead to losing synchronization between the internal divider stages. The internal enable flip-flop is clocked on the falling edge of the input clock; therefore, all associated specification limits are referenced to the negative edge of the clock input.Upon start−up, the internal flip-flops will attain a random state; the master reset (MR) input allows for the synchronization of the internaldividers, as well as multiple LVEL34s in a system.

特性 Features

• 50 ps Typical Output-to-Output Skew
• Synchronous Enable/Disable
• Master Reset for Synchronization
• 1.5 GHz Toggle Frequency
• The 100 Series Contains Temperature Compensation.
• PECL Mode Operating Range: VCC = 3.0 V to 3.8 V with VEE = 0V
• NECL Mode Operating Range: VCC = 0 V with VEE = -3.0 V to -3.8 V
• Open Input Default State
• LVDS Input Compatible
• Pb-Free Packages are Available

简介

MC100LVEL34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MC100LVEL34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。