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ASM2I99456-32-ER PDF预览

ASM2I99456-32-ER

更新时间: 2024-02-19 17:09:07
品牌 Logo 应用领域
ALSC 时钟
页数 文件大小 规格书
14页 553K
描述
3.3V/2.5V LVCMOS Clock Fanout Buffer

ASM2I99456-32-ER 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:7 X 7 MM, LQFP-32Reach Compliance Code:unknown
风险等级:5.76Is Samacsys:N
其他特性:ALSO OPERATES AT 3.3V SUPPLY系列:99456
输入调节:DIFFERENTIALJESD-30 代码:S-PQFP-G32
JESD-609代码:e0长度:7 mm
逻辑集成电路类型:LOW SKEW CLOCK DRIVER功能数量:1
反相输出次数:端子数量:32
实输出次数:10最高工作温度:85 °C
最低工作温度:-40 °C输出特性:3-STATE
封装主体材料:PLASTIC/EPOXY封装代码:LQFP
封装形状:SQUARE封装形式:FLATPACK, LOW PROFILE
峰值回流温度(摄氏度):NOT SPECIFIED传播延迟(tpd):5.6 ns
认证状态:Not QualifiedSame Edge Skew-Max(tskwd):0.35 ns
座面最大高度:1.6 mm最大供电电压 (Vsup):2.625 V
最小供电电压 (Vsup):2.375 V标称供电电压 (Vsup):2.5 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:TIN LEAD端子形式:GULL WING
端子节距:0.8 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7 mm
Base Number Matches:1

ASM2I99456-32-ER 数据手册

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June 2005  
rev 0.2  
ASM2I99456  
3.3V/2.5V LVCMOS Clock Fanout Buffer  
Features  
specified for the extended temperature range of –40 to  
85°C.  
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Configurable 10 outputs LVCMOS Clock  
distribution buffer  
Compatible to single, dual and mixed 3.3V/2.5V  
Voltage supply  
Wide range output clock frequency up to  
250MHz  
Designed for mid-range to high-performance  
telecom, networking and computer applications  
Supports high-performance differential clocking  
applications  
The ASM2I99456 is a full static design supporting clock  
frequencies up to 250 MHz. The signals are generated and  
retimed on-chip to ensure minimal skew between the three  
output banks.  
Each of the three output banks can be individually supplied  
by 2.5V or 3.3V supporting mixed voltage applications. The  
FSELx pins choose between division of the input reference  
frequency by one or two. The frequency divider can be set  
individually for each of the three output banks. The  
ASM2I99456 can be reset and the outputs are disabled by  
deasserting the MR/OE pin (logic high state). Asserting  
MR/OE will enable the outputs.  
Max. output skew of 200pS  
(150pS within one bank)  
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Selectable output configurations per output bank  
Tristatable outputs  
32 LQFP and TQFP Packages  
Ambient Operating temperature range of  
-40 to 85°C  
All control inputs accept LVCMOS signals while the outputs  
provide LVCMOS compatible levels with the capability to  
drive terminated 50transmission lines. The clock input is  
low voltage PECL compatible for differential clock  
distribution support. Please consult the ASM2I99446  
specification for a full CMOS compatible device. For series  
terminated transmission lines, each of the ASM2I99456  
outputs can drive one or two traces giving the devices an  
effective fanout of 1:20. The device is packaged in a  
7x7 mm2 32-lead LQFP and TQFP Packages.  
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Pin and Function compatible to MPC9456  
Functional Description  
The ASM2I99456 is a 2.5V and 3.3V compatible 1:10 clock  
distribution buffer designed for low-Voltage mid-range to  
high-performance telecom, networking and computing  
applications. Both 3.3V, 2.5V and dual supply voltages are  
supported for mixed-voltage applications. The ASM2I99456  
offers 10 low-skew outputs and a differential LVPECL clock  
input. The outputs are configurable and support 1:1 and 1:2  
output to input frequency ratios. The ASM2I99456 is  
Alliance Semiconductor  
2575, Augustine Drive Santa Clara, CA Tel: 408.855.4900 Fax: 408.855.4999 www.alsc.com  
Notice: The information in this document is subject to change without notice.  

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