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CY29940AXI PDF预览

CY29940AXI

更新时间: 2024-11-25 04:13:19
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 时钟
页数 文件大小 规格书
7页 256K
描述
2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer

CY29940AXI 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:QFP包装说明:LQFP-32
针数:32Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.31.00.01
Factory Lead Time:1 week风险等级:5.73
其他特性:ALSO OPERATES AT 3.3V SUPPLY系列:29940
输入调节:DIFFERENTIALJESD-30 代码:S-PQFP-G32
JESD-609代码:e3长度:7 mm
逻辑集成电路类型:LOW SKEW CLOCK DRIVER最大I(ol):0.02 A
湿度敏感等级:3功能数量:1
反相输出次数:端子数量:32
实输出次数:18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:LQFP封装等效代码:QFP32,.35SQ,32
封装形状:SQUARE封装形式:FLATPACK, LOW PROFILE
峰值回流温度(摄氏度):260电源:2.5/3.3 V
Prop。Delay @ Nom-Sup:5.2 ns传播延迟(tpd):5.2 ns
认证状态:Not QualifiedSame Edge Skew-Max(tskwd):0.2 ns
座面最大高度:1.6 mm子类别:Clock Drivers
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:Matte Tin (Sn)
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:40
宽度:7 mm

CY29940AXI 数据手册

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CY29940  
2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer  
Features  
Description  
• 200-MHz clock support  
The CY29940 is a low-voltage 200-MHz clock distribution buff-  
er with the capability to select either a differential LVPECL or  
a LVCMOS/LVTTL compatible input clock. The two clock  
sources can be used to provide for a test clock as well as the  
primary system clock. All other control inputs are LVC-  
MOS/LVTTL compatible. The eighteen outputs are 2.5V or  
3.3V LVCMOS/LVTTL compatible and can drive 50series or  
parallel terminated transmission lines. For series terminated  
transmission lines, each output can drive one or two traces  
giving the device an effective fanout of 1:36. Low out-  
put-to-output skews make the CY29940 an ideal clock distri-  
bution buffer for nested clock trees in the most demanding of  
synchronous systems.  
• LVPECL or LVCMOS/LVTTL clock input  
• LVCMOS/LVTTL compatible inputs  
• 18 clock outputs: drive up to 36 clock lines  
• 60 ps typical output-to-output skew  
• Dual or single supply operation:  
— 3.3V core and 3.3V outputs  
— 3.3V core and 2.5V outputs  
— 2.5V core and 2.5V outputs  
• Pin compatible with MPC940L, MPC9109  
• Available in Commercial and Industrial temperature  
• 32-pin LQFP package  
Block Diagram  
Pin Configuration  
VDD  
VDDC  
PECL_CLK  
PECL_CLK#  
0
1
VSS  
VSS  
TCLK  
1
2
3
4
5
6
7
8
24  
23  
22  
Q6  
Q7  
Q8  
VDD  
18  
Q0-Q17  
TCLK  
TCLK_SEL  
PECL_CLK  
PECL_CLK#  
VDD  
CY29940 210 Q9  
TCLK_SEL  
19  
18  
17  
Q10  
Q11  
VSS  
VDDC  
Pin Description[1]  
Pin  
Name  
PWR  
I/O  
Description  
5
6
3
PECL_CLK  
PECL_CLK#  
TCLK  
I, PU PECL Input Clock  
I, PD PECL Input Clock  
I, PD External Reference/Test Clock Input  
Clock Outputs  
9, 10, 11, 13, 14, Q(17:0)  
15, 18, 19, 20, 22,  
23, 24, 26, 27, 28,  
30, 31, 32  
VDDC  
O
4
TCLK_SEL  
I, PD Clock Select Input. When LOW, PECL clock is selected and when HIGH  
TCLK is selected.  
8, 16, 29  
7, 21  
VDDC  
VDD  
VSS  
3.3V or 2.5V Power Supply for Output Clock Buffers  
3.3V or 2.5V Power Supply  
1, 2, 12, 17, 25  
Common Ground  
Note:  
1. PD = Internal Pull-Down, PU = Internal Pull-up  
Cypress Semiconductor Corporation  
Document #: 38-07283 Rev. *C  
198 Champion Court  
San Jose, CA 95134-1709  
408-943-2600  
Revised April 4, 2006  
[+] Feedback  

CY29940AXI 替代型号

型号 品牌 替代类型 描述 数据表
CY29940AXIT CYPRESS

完全替代

2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer
CY29942AXC CYPRESS

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CY29940AXC CYPRESS

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2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer

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