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概览

描述

The 8T49N241 has one fractional-feedback PLL that can be used as a frequency translator with jitter attenuation or a frequency synthesizer. It is equipped with one integer and three fractional output dividers, allowing the generation of up to four different and unrelated output frequencies, ranging from 8kHz to 1GHz. Output frequencies can be completely independent of the input frequencies, and all four of these frequencies can be completely independent of each other. The four outputs may select among LVPECL, LVDS, HCSL, or LVCMOS output levels.

The 8T49N241 is ideal for use in a wide range of equipment, including 10G/40G/100G SONET/SDH and Ethernet network line cards, wireless base station baseband units, broadcast video, carrier Ethernet switches, OTN, or in test and measurement applications. For example, the 8T49N241 can be used in GbE/10GbE/100GbE Synchronous Ethernet line card applications in order to preserve the G.8262 compliance from the Synchronous Equipment Timing Source (SETS) on the timing card.

Renesas’ third-generation Universal Frequency Translator family also includes the 8T49N242 (2-in/1-PLL/4-out), the 8T49N285 (2-in/1-PLL / 8-out), the 8T49N286 (4-in/2-PLL/8-out) and the 8T49N287 (2-in/2-PLL/8-out). These devices are complemented by the 82P33714 and 82P33731 synchronous equipment timing source (SETS) for Synchronous Ethernet (SyncE) and 10G to 40G SyncE, respectively.

To see other devices in this product family, visit the Universal Frequency Translators page.

特性

  • Compliant with the requirements outlined in Telcordia GR-253-CORE (SONET) and ITU-T G.813/G.8262 (SDH/SONET and SyncE) when paired with a Synchronous Equipment Timing Source (SETS ) device
  • Generates up to 4 LVPECL/LVDS/HCSL or 16 LVCMOS output clocks ranging from 8kHz up to 1.0GHz (diff), 8kHz to 250MHz (LVCMOS), that meet jitter limits for 10G up to 25G Ethernet applications
  • 0.35ps RMS (including spurs), 12kHz to 20MHz
  • Accepts up to two LVPECL, LVDS, LVHSTL, HCSL, or LVCMOS input clocks ranging from 8kHz up to 875MHz
  • Auto and manual input clock selection with hitless switching
  • Clock input monitoring, including support for gapped clocks
  • Phase-Slope Limiting and Fully Hitless Switching options to control output phase transients
  • Operates from 10MHz to 50MHz
  • Register programmable through I²C or via external I²C EEPROM
  • 8T49N241-998 "Boot from EEPROM"
  • 8T49N241-999 "powers up disabled"
  • Supported by Renesas' Timing Commander™ software

产品对比

应用

  • OTN or SONET/SDH equipment
  • Gigabit and Terabit IP switches/routers including Synchronous Ethernet
  • Video broadcast

文档

设计和开发

软件与工具

软件与工具

Software title
Software type
公司
Timing Commander
Timing Commander™ 是一个基于 Windows™ 的创新软件平台,通过这个平台,系统设计工程师可以通过直观且灵活的图形用户界面 (GUI) 对精密的计时设备进行配置、编程和监控。
Code Generator 瑞萨电子
1 item

软件下载

类型 文档标题 日期
软件和工具 - 软件 登录后下载 ZIP 18.01 MB
软件和工具 - 软件 登录后下载 ZIP 6.71 MB
PCB 设计文件 ZIP 12 KB
3 items

开发板与套件

模型

ECAD 模块

点击产品选项表中的产品,查找 SamacSys 中的原理图符号、PCB 足迹和 3D CAD 模型。点击产品选项表中的产品,查找 SamacSys 中的原理图符号、PCB 足迹和 3D CAD 模型。
 

Diagram of ECAD Models
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视频和培训

8T49N241/2: Universal Frequency Translators with Jitter Attenuation

This video provides an overview of the 8T49N241/2, a universal frequency translator designed for jitter attenuation. The video highlights the product's key features and capabilities.