NB7VQ14M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 NB7VQ14M is a high performance differential 1:4 CML fanout buffer with a selectable Equalizer receiver. When placed in series with a Clock/Data path operating up to 8 GHz or 14 Gb/s, respectively, the NB7VQ14M inputs will compensate the degraded signal transmitted across a FR4 PCB backplane or cable interconnect and output four identical CML copies of the input signal with a 1.8 V, 2.5 V or 3.3 V power supply. Therefore, the serial data rate is increased by reducing Inter-Symbol Interference (ISI) caused by losses in copper interconnect or long cables. The EQualizer ENable pin (EQEN) allows the IN/INb inputs to either flow through or bypass the Equalizer section. Control of the Equalizer function is realized by setting EQEN; When EQEN is set Low, the IN/IN inputs bypass the Equalizer. When EQEN is set High, the IN/INb inputs flow through the Equalizer. The default state at start-up is LOW. As such, NB7VQ14M is ideal for SONET, GigE, Fiber Channel, Backplane and other Clock/Data distribution applications. The differential inputs incorporate internal 50-ohm termination resistors that are accessed through the VT pin. This feature allows the NB7VQ14M to accept various logic level standards, such as LVPECL, CML or LVDS. The 1:4 fanout design was optimized for low output skew applications. The NB7VQ14M is a member of the GigaComm™ family of high performance clock products.

特性 Features

• Input Data Rate > 14 Gb/s, Typical
• Input Clock Frequency > 8 GHz, Typical
• 165 ps Typical Propagation Delay
• 30 ps Typical Rise and Fall Times
•
•
•
• Differential CML Outputs, 400 mV Peak-to-Peak, Typical
• Selectable Input Equalization
• Operating Range: VCC = 1.71 V to 3.6 V with GND = 0 V
• Internal Input Termination Resistors, 50-ohm
• -40°C to +85°C Ambient Operating Temperature

应用 Application

• Clock and Data Fanout in Routers, Swithers
• Routers, Swithers

简介

NB7VQ14M属于集成电路（IC）的时钟缓冲器驱动器。由制造生产的NB7VQ14M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。