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PCS2P9942PG-32-LR PDF预览

PCS2P9942PG-32-LR

更新时间: 2024-01-05 15:41:39
品牌 Logo 应用领域
PULSECORE 时钟驱动器逻辑集成电路
页数 文件大小 规格书
10页 432K
描述
Low Voltage 1:18 Clock Distribution Chip

PCS2P9942PG-32-LR 技术参数

生命周期:Obsolete包装说明:7 X 7 MM, 0.80 MM HEIGHT, GREEN, LQFP-32
Reach Compliance Code:unknown风险等级:5.84
Is Samacsys:N其他特性:IT CAN ALSO OPERATE WITH 2.5V
系列:9942输入调节:DIFFERENTIAL
JESD-30 代码:S-PQFP-G32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:18最高工作温度:70 °C
最低工作温度: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
传播延迟(tpd):3.6 ns认证状态:Not Qualified
Same Edge Skew-Max(tskwd):0.15 ns座面最大高度:1.6 mm
最大供电电压 (Vsup):3.465 V最小供电电压 (Vsup):3.135 V
标称供电电压 (Vsup):3.3 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子形式:GULL WING端子节距:0.8 mm
端子位置:QUAD宽度:7 mm
最小 fmax:250 MHzBase Number Matches:1

PCS2P9942PG-32-LR 数据手册

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September 2006  
rev 0.4  
PCS2I9942P  
Low Voltage 1:18 Clock Distribution Chip  
Features  
With low output impedance (12), in both the HIGH and  
LOW logic states, the output buffers of the PCS2I9942P  
are ideal for driving series terminated transmission lines.  
With an output impedance of 12, the PCS2I9942P can  
drive two series terminated transmission lines from each  
output. This capability gives the PCS2I9942P an effective  
fanout of 1:36. The PCS2I9942P provides enough copies  
of low skew clocks for most high performance synchronous  
systems.  
LVPECL Clock Input  
2.5V LVCMOS  
Microprocessor Support  
Outputs  
for  
PentiumIITM  
200pS Maximum Targeted Output–to–Output  
Skew  
Maximum Output Frequency of 250MHz @3.3 VCC  
32–Lead LQFP and TQFP Packaging  
Single 3.3V or 2.5V Supply  
Pin and Function compatible with MPC942P  
Functional Description  
The differential LVPECL inputs of the PCS2I9942P allow  
the device to interface directly with a LVPECL fanout buffer  
to build very wide clock fanout trees or to couple to a high  
frequency clock source. The OE pins will place the outputs  
into a high impedance state. The OE pin has an internal  
pullup resistor.  
The PCS2I9942P is a 1:18 low voltage clock distribution  
chip with 2.5V or 3.3V LVCMOS output capabilities. The  
device is offered in two versions; the PCS2I9942C has an  
LVCMOS input clock while the PCS2I9942P has a LVPECL  
input clock. The 18 outputs are 2.5V or 3.3V LVCMOS  
compatible and feature the drive strength to drive 50Ω  
series or parallel terminated transmission lines. With  
output-to-output skews of 200pS, the PCS2I9942P is ideal  
as a clock distribution chip for the most demanding of  
synchronous systems. The 2.5V outputs also make the  
device ideal for supplying clocks for a high performance  
Pentium IITM microprocessor based design.  
The PCS2I9942P is a single supply device. The VCC power  
pins require either 2.5V or 3.3V. The 32 lead LQFP and  
TQFP package is chosen to optimize performance, board  
space and cost of the device. The 32–lead LQFP and  
TQFP have a 7x7mm2 body size with conservative 0.8mm  
pin spacing.  
* Pentium II is a trademark of Intel Corporation  
Block Diagram  
Table 1. Function Table  
Q0  
OE  
Output  
PECL_CLK  
PECL_CLK  
Q1-Q16  
Q17  
0
1
HIGH IMPEDANCE  
OUTPUTS ENABLED  
OE  
(Int. Pullup)  
PulseCore Semiconductor Corporation  
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 Tel: 408-879-9077 Fax: 408-879-9018  
www.pulsecoresemi.com  
Notice: The information in this document is subject to change without notice.  

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