78P7200

厂商：
TDK(东电化)
封装：
描述：
78P7200 - E3/DS3/STS-1 Transceiver - TDK Electronics

数据手册：

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数据手册
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78P7200 数据手册

® TDK SEMICONDUCTOR CORP. DESCRIPTION The 78P7200L is a line interface transceiver IC for E3, DS3, STS-1, North America T3 and ATM applications. It includes clock recovery and transmitter pulse shaping functions for applications using 75-ohm coaxial cable at distances up to 1100 feet. These applications include DSLAMs, T3/E3 digital multiplexers, SONET Add/Drop multiplexers, PDH equipment, DS3 to Fiber optic and microwave modems and ATM WAN access for routers and switches. The receiver recovers clock and positive data and negative data from an AMI signal. It can compensate for over 12dB of cable and 6dB of flat loss. The transmitter generates a signal that meets the standard pulse shape requirements. The 78P7200L is pin and functionally compatible to the 78P7200. It adds loop-back and clock polarity selection. The 78P7200L is manufactured in an advanced BICMOS process and operates at both 5V and 3.3 V power supply voltages. It consumes less than 95 mA of supply current. FEATURES • • • • • • • • • • • • 78P7200L E3/DS3/STS-1 Transceiver March 2001 Single chip transmit and receive interface for E3, DS3 and STS-1 applications. Interface to 75 ohm coaxial cable over 1100 feet at speeds up to 51.84 Mbps. Compliant with ANSI T1.102-1993, Telcordia GR-499-CORE and GR-253-CORE, ITU-T G.703 and G.823 for jitter tolerance. Compliant with ATM FORUM af-phy-0034 (E3 public UNI) and af-phy-0054 (DS3 public UNI). Easily Interfaced to ATM framer ICs such as PMC 7345 , 7346 QJET and 7321. Unique clock recovery requires no reference clock or crystal oscillator. Receive DS3-high signal Includes diagnostic loop-back for AMI and digital signals. Pin compatible to 78P7200 and 78P2241 (28lead PLCC). 28-lead PLCC and 48-lead TQFP packages 3.3 or 5 V operation, ICC

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78P7200

物料型号：78P7200L

器件简介：78P7200L是一款用于E3、DS3、STS-1、北美T3和ATM应用的线路接口收发器集成电路。

它包括时钟恢复和发射机脉冲整形功能，适用于使用75欧姆同轴电缆在1100英尺距离内的应用，如DSLAM、T3/E3数字复用器、SONET加/减复用器、PDH设备、DS3至光纤和微波调制解调器以及ATM广域网路由器和交换机的访问。

引脚分配：78P7200L采用28引脚PLCC和48引脚TQFP封装。

关键引脚包括LIN+和LIN-（第42和44引脚，差分AMI线路输入），RCLK（第33和23引脚，恢复的接收时钟），RPOS/TNRZ和RNEG（第35和25引脚，正/负数据接收），TCLK（第18和16引脚，发射机时钟输入），TPOS/TNRZ和TNEG（第16和14引脚，正/负数据发射），以及LOUT+和LOUT-（第9和11引脚，差分AMI线路输出）。

参数特性： - 支持E3、DS3和STS-1应用的单芯片发射和接收接口。

- 能够在51.84 Mbps的速度下与75欧姆同轴电缆接口，距离超过1100英尺。

- 符合ANSI T1.102-1993、Telcordia GR-499-CORE和GR-253-CORE、ITU-T G.703和G.823的抖动容忍标准。

- 与ATM论坛的af-phy-0034（E3公共UNI）和af-phy-0054（DS3公共UNI）标准兼容。

- 无需参考时钟或晶体振荡器的独特时钟恢复。

- 接收DS3-high信号。

- 包括AMI和数字信号的诊断环路。

- 与78P7200和78P2241（28引脚PLCC）引脚兼容。

- 3.3V或5V操作，ICC < 95 mA。

功能详解： - 接收器可以从AMI信号中恢复时钟和正/负数据，可以补偿超过12dB的电缆损耗和6dB的平坦损耗。

- 发射机产生符合标准脉冲形状要求的信号。

- 78P7200L在5V和3.3V电源电压下工作，消耗小于95 mA的供电电流。