描述 Description

The ZL40235 is a programmable or hardware pin controlled low additive jitter, low power 3 x 5 LVPECL/HCSL/LVDS fanout buffer.? Two inputs can accept signal in differential (LVPECL, SSTL, LVDS, HSTL, CML) or single ended? (LVPECL or LVCMOS) format and the third input can accept a single ended signal or it can be used to build a crystal oscillator by connecting an external crystal resonator between its XIN and XOUT pins.? All the other components for building crystal oscillator are built in device such as load capacitance, series and shunt resistors.? The ZL40235 has five LVPECL/HCSL/LVDS outputs which can be powered from 3.3V or 2.5V supply.? Each output can be independently enabled/disabled via SPI bus. The type of each output driver can be programmed to be LVPECL, HCSL or LVDS. Hence, the device can be configured to support application where different signal formats are needed.? The device operates from 2.5V+/-5% or 3.3V+/-5% supply. Its operation is guaranteed over the industrial temperature range -40°C to +85°C.

特性 Features

3 to 1 input Multiplexer: Two inputs accept any differential (LVPECL, HCSL, LVDS, SSTL, CML, LVCMOS) or a single ended signal and the third input accepts a crystal or a single ended signal
Five differential LVPECL/LVDS/HCSL outputs and one LVCMOS output
Ultra-low additive jitter: 24fs (integration band 12kHz to 20MHz at 625MHz)
Supports clock frequencies from 0 to 1.6GHz
Supports 2.5V or 3.3V power supplies for LVPECL, LVDS or HCSL outputs
Supports 1.5V, 1,8V, 2.5V or 3.3V power supplies for LVCMOS output
Embedded Low Drop Out (LDO) Voltage regulator provides superior Power Supply Noise Rejection
Maximum output to output skew of 40ps
Device controlled via SPI or hardware pins

簡介

ZL40235屬于集成電路（IC）的時(shí)鐘緩沖器驅(qū)動(dòng)器。由制造生產(chǎn)的ZL40235時(shí)鐘緩沖器，驅(qū)動(dòng)器時(shí)鐘緩沖器和驅(qū)動(dòng)器集成電路產(chǎn)品族中的產(chǎn)品用于幫助信號(hào)在系統(tǒng)中傳輸，常用作頻率/時(shí)間參考信號(hào)，以同步系統(tǒng)內(nèi)的活動(dòng)。盡管這些器件最常用到的功能就是緩沖（即，為使信號(hào)不受驅(qū)動(dòng)負(fù)載的影響而從某個(gè)信號(hào)源復(fù)制信號(hào)），但是該產(chǎn)品族中的某些器件還能執(zhí)行其他功能，例如選擇性改變緩沖信號(hào)路徑、按某個(gè)整數(shù)值分割信號(hào)頻率，或進(jìn)行所用電信號(hào)格式轉(zhuǎn)換。