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ICS87949AY-01 PDF预览

ICS87949AY-01

更新时间: 2024-09-30 19:43:03
品牌 Logo 应用领域
艾迪悌 - IDT 驱动逻辑集成电路
页数 文件大小 规格书
13页 159K
描述
Low Skew Clock Driver, 15 True Output(s), 0 Inverted Output(s), PQFP48, 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-48

ICS87949AY-01 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Active零件包装代码:QFP
包装说明:LFQFP,针数:48
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.11输入调节:DIFFERENTIAL MUX
JESD-30 代码:S-PQFP-G48JESD-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:48实输出次数:15
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:LFQFP
封装形状:SQUARE封装形式:FLATPACK, LOW PROFILE, FINE PITCH
峰值回流温度(摄氏度):240认证状态:Not Qualified
Same Edge Skew-Max(tskwd):0.2 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
温度等级:COMMERCIAL端子面层:TIN LEAD
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:20
宽度:7 mmBase Number Matches:1

ICS87949AY-01 数据手册

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PRELIMINARY  
ICS87949-01  
Integrated  
Circuit  
Systems, Inc.  
LOW SKEW  
÷1, ÷2  
CLOCK GENERATOR  
GENERAL DESCRIPTION  
FEATURES  
The ICS87949-01 is a low skew, ÷1, ÷2 Clock • 15 single ended LVCMOS outputs, 7typical output  
,&6  
Generator and a member of the HiPerClockS™  
family of High Performance Clock Solutions from  
ICS. The ICS87949-01 has selectable single  
ended clock or LVPECL clock inputs. The single  
impedance  
HiPerClockS™  
• Selectable LVCMOS or LVPECL clock inputs  
• CLK0 and CLK1 can accept the following input levels:  
LVCMOS and LVTTL  
ended clock input accepts LVCMOS or LVTTL input levels.  
The PCLK, nPCLK pair can accept LVPECL, CML, or SSTL  
input levels. The low impedance LVCMOS outputs are de-  
signed to drive 50series or parallel terminated transmis-  
sion lines. The effective fanout can be increased from 15 to  
30 by utilizing the ability of the outputs to drive two series  
terminated lines.  
• PCLK, nPCLK supports the following input types:  
LVPECL, CML, SSTL  
• Maximum input frequency: 250MHz  
• Output skew: 200ps (maximum)  
• Part-to-part skew: 500ps (typical)  
The divide select inputs, DIV_SELx, control the output frequency  
of each bank. The outputs can be utilized in the ÷1, ÷2 or a  
combination of ÷1 and ÷2 modes. The master reset input, MR/  
nOE, resets the internal frequency dividers and also controls  
the active and high impedance states of all outputs.  
• Multiple frequency skew: 350ps (maximum)  
• 3.3V input, outputs may be either 3.3V or 2.5V supply modes  
• 0°C to 70°C ambient operating temperature  
• Industrial temperature information available upon request  
The ICS87949-01 is characterized at 3.3V core/3.3V output and  
3.3V core/ 2.5V output. Guaranteed bank, output and part-to-  
part skew characteristics make the ICS87949-01 ideal for those  
clock distribution applications demanding well defined perfor-  
mance and repeatability.  
• Functionally compatible to the MPC949 in a smaller footprint  
requiring less board space  
BLOCK DIAGRAM  
PIN ASSIGNMENT  
CLK_SEL  
0
1
CLK0  
CLK1  
÷1  
÷2  
0
1
48 47 46 45 44 43 42 41 40 39 38 37  
1
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
MR/nOE  
CLK_SEL  
VDD  
nc  
R
PCLK  
nPCLK  
2
GND  
QC0  
VDDC  
QC1  
GND  
QC2  
VDDC  
QC3  
GND  
GND  
QD5  
3
0
1
4
CLK0  
QA0 - QA1  
QB0 - QB2  
QC0 - QC3  
PCLK_SEL  
DIV_SELA  
5
CLK1  
6
PCLK  
ICS87949-01  
7
nPCLK  
0
1
8
PCLK_SEL  
DIV_SELA  
DIV_SELB  
DIV_SELC  
DIV_SELD  
9
10  
11  
12  
DIV_SELB  
DIV_SELC  
0
1
13 14 15 16 17 18 19 20 21 22 23 24  
0
1
QD0 - QD5  
48-Lead LQFP  
7mm x 7mm x 1.4mm package body  
DIV_SELD  
MR/nOE  
Y Package  
Top View  
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial  
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.  
87949AY-01  
www.icst.com/products/hiperclocks.html  
REV. A JANUARY 2, 2002  
1

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