SY89858U数据手册集成电路（IC）的时钟缓冲器驱动器规格书PDF

描述 Description

The SY89858U is a 2.5V/3.3V precision, high-speed, fully differential LVPECL 1:8 fanout buffer optimized to provide eight identical output copies with less than 30ps of skew and less than 10pspp total jitter. It can process clock signals as fast as 2.0GHz.The differential input includes Micrel's unique, 3-pin input termination architecture that allows the SY89858U to directly interface to LVPECL, CML, and LVDS differential signals (AC- or DC-coupled) as small as 100mV without any level shifting or termination resistor networks in the signal path. The result is a clean, stub-free, low-jitter interface solution. The LVPECL (100k temperature compensated) outputs feature 800mV typical swing into 50Ω loads, and provide fast rise/fall times guaranteed to be less than 200ps.The SY89858U operates from a 2.5V ±5% supply or 3.3V ±10% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. For applications that require a higher speed fanout buffer, consider the SY58032U. The SY89858U is part of Micrel's high-speed, Precision Edge® product line.

特性 Features

• Precision 1:8, LVPECL fanout buffer
• Low power: 238mW (2.5V)
• Guaranteed AC performance over temperature and supply voltage:
• Wide operating frequency: DC to 2.0GHz
• <380ps In-to-Out tpd
• <200ps tr/tf
• <30ps skew
• Ultra-low jitter design:
• 710fsRMS phase jitter (typ.)
• 100k LVPECL compatible outputs
• Fully differential inputs/outputs
• Accepts an input signal as low as 100mV (200mVpp)
• Unique patent pending input termination and VT pin accepts DC-coupled and AC-coupled differential inputs (LVPECL, LVDS, and CML)
• Power supply 2.5V ±5% or 3.3V ±10%
• -40°C to +85°C industrial temperature range
• Available in 32-pin (5mm x 5mm) QFN package

简介

SY89858U属于集成电路（IC）的时钟缓冲器驱动器。由制造生产的SY89858U时钟缓冲器，驱动器时钟缓冲器和驱动器集成电路产品族中的产品用于帮助信号在系统中传输，常用作频率/时间参考信号，以同步系统内的活动。尽管这些器件最常用到的功能就是缓冲（即，为使信号不受驱动负载的影响而从某个信号源复制信号），但是该产品族中的某些器件还能执行其他功能，例如选择性改变缓冲信号路径、按某个整数值分割信号频率，或进行所用电信号格式转换。