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ACS8522BT PDF预览

ACS8522BT

更新时间： 2024-02-01 05:57:03
品牌 Logo 应用领域
商升特 - SEMTECH ATM集成电路SONET集成电路SDH集成电路电信集成电路电信电路异步传输模式以太网
页数 文件大小 规格书
122页 2373K
描述
orderSynchronous Equipment Timing Source for Stratum 3/4E/4, SMC and Ethernet Systems

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ACS8522BT 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：QFP
包装说明：LFQFP, QFP64,.47SQ,20针数：64
Reach Compliance Code：compliantHTS代码：8542.39.00.01
风险等级：5.4Is Samacsys：N
应用程序：SONET;SDHJESD-30 代码：S-PQFP-G64
JESD-609代码：e3长度：10 mm
湿度敏感等级：3功能数量：1
端子数量：64最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：LFQFP封装等效代码：QFP64,.47SQ,20
封装形状：SQUARE封装形式：FLATPACK, LOW PROFILE, FINE PITCH
峰值回流温度（摄氏度）：260电源：3.3,3.3/5 V
认证状态：Not Qualified座面最大高度：1.6 mm
子类别：Other Telecom ICs最大压摆率：0.2 mA
标称供电电压：3.3 V表面贴装：YES
电信集成电路类型：ATM/SONET/SDH SUPPORT CIRCUIT温度等级：INDUSTRIAL
端子面层：MATTE TIN端子形式：GULL WING
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：10 mm
Base Number Matches：1

ACS8522BT 数据手册

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ACS8522BT eSETS  
Synchronous Equipment Timing Source for  
Stratum 3/4E/4, SMC and Ethernet Systems  
About this Datasheet  
Welcome to the datasheet for the Semtech ACS8522BT  
eSETS integrated circuit.  
ADVANCED COMMS & SENSING  
FINAL  
Features  
DATASHEET  
Suitable for Stratum 3, 4E, 4 and SONET Minimum  
Clock (SMC) or SONET/SDH Equipment Clock (SEC)  
and Ethernet applications.  
The electronic edition of this datasheet contains  
hyperlinks that are colored blue. Click on a link to navigate  
directly to the respective topic.  
Meets Telcordia 1244-CORE Stratum 3 and GR-253,  
and ITU-T G.813 Options and and ITU-T G.8262  
(Draft) specifications.  
Description  
Accepts four individual input reference clocks, all with  
The ACS8522BT is a highly integrated, single-chip  
solution for the Synchronous Equipment Timing Source  
(SETS) function in a SONET or SDH network element. The  
device generates SONET or SDH Equipment Clocks (SEC),  
frame synchronization clocks and Ethernet clocks. The  
ACS8522BT is fully compliant with the required  
international specifications and standards.  
robust input clock source quality monitoring.  
Simultaneously generates four output clocks, plus two  
Sync pulse outputs.  
Generates four Ethernet frequencies (25 Mhz,  
50 MHz, 62.5 MHz and 125 MHz) on any combination  
of four TO outputs.  
Absolute holdover accuracy better than 3 x 10-10  
(manual), 7.5 x 10-14 (instantaneous); Holdover  
stability defined by choice of external XO.  
The device supports free-run, locked and holdover modes,  
with mode selection controlled automatically by an  
internal state machine, or forced by register  
configuration.  
Programmable PLL bandwidth, for wander and jitter  
tracking/attenuation, 0.1 Hz to 70 Hz in 10 steps.  
The ACS8522BT accepts up to four independent input  
SEC reference clock sources from Recovered Line Clock,  
PDH network, and Node Synchronization. The device  
generates independent SEC and BITS clocks, an 8 kHz  
Frame Synchronization clock and a 2 kHz Multi-Frame  
Synchronization clock (both with programmable pulse  
width and polarity) and four Ethernet clocks.  
Automatic hit-less source switchover on loss of input.  
Serial SPI compatible interface.  
Output phase adjustment in 6 ps steps up to ±200 ns.  
IEEE 1149.1 JTAG Boundary Scan.  
Single 3.3 V operation.  
Available in LQFP 64-pin package.  
The ACS8522BT includes a serial port which can be SPI  
compatible, providing access to the configuration and  
status registers for device setup.  
Lead (Pb)-free, Halogen free, RoHS and WEEE  
compliant.  
The ACS8522BT supports IEEE 1149.1 JTAG boundary  
scan.  
References to Standards  
Users can choose between OCXO or TCXO to define the  
Stratum and/or holdover performance required.  
All standards referred to in this datasheet are listed in  
References and Associated Documents.  
Revision 1.00/April 2010© Semtech Corp.  
Page1  
www.semtech.com  
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