ZL40255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 ZL40255 SmartBuffer™ is a flexible, programmable fanout buffer IC. The ZL40255 can select from 1 of 4 input clocks and provide as many as 3 differential or 6 CMOS outputs. Each output can provide format conversion, integer frequency division, and skew adjustment. Flexible any-format outputs simplify design. Automatic self-configuration after power-up or reset.

特性 Features

Four Input Clocks: one crystal/CMOS input, two differential/CMOS inputs, one single-ended/CMOS input
Any input frequency up to 1035MHz (up to 300MHz for CMOS)
Clock selection by pin or register control
Up to 3 Differential Outputs (Up to 6 CMOS)
Output frequencies are any integer divisor up to 232 of the input frequency (CMOS 250MHz max)
Each output has independent dividers
Low additive jitter Outputs are CML or 2xCMOS, can interface to LVDS, LVPECL, HSTL, SSTL and HCSL
In 2xCMOS mode, the P and N pins can be different frequencies (e.g. 125MHz and 25MHz)
Per-output supply pin with CMOS output voltages from 1.5V to 3.3V
Precise output alignment circuitry and per-output phase adjustment
Per-output enable/disable and glitch-less start/stop (stop high or low)
Automatic self-configuration at power-up from internal EEPROM; up to four configurations, pin-selectable
Crystal interface for frequency synthesis up to 60MHz
Four general-purpose I/O pins, each with many status and control options
SPI or I2C processor Interface
Tiny 5x5mm QFN package

简介

ZL40255属于集成电路（IC）的时钟缓冲器驱动器。由制造生产的ZL40255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。