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| 型号： | ICS87946AYILFT |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | LOW SKEW CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-32 |
| 文件页数： | 1/9页 |
| 文件大小： | 107K |
| 代理商： | ICS87946AYILFT |
87946AYI
www.icst.com/products/hiperclocks.html
REV. B OCTOBER 22, 2002
1
Integrated
Circuit
Systems, Inc.
ICS87946I
LOW SKEW,
÷1, ÷2
LVCMOS CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS87946I is a low skew, ÷1, ÷2 LVCMOS
Clock Generator and a member of the
HiPerClockS family of High Performance Clock
Solutions from ICS. The ICS87946I has two select-
able single ended clock inputs. The single ended
clock inputs accept LVCMOS or LVTTL input levels. The low
impedance LVCMOS outputs are designed to drive 50
series
or parallel terminated transmission lines. The effective fanout
can be increased from 10 to 20 by utilizing the ability of the
outputs to drive two series terminated lines.
The divide select inputs, DIV_SELx, control the output fre-
quency 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.
The ICS87946I is characterized at 3.3V core/3.3V output. Guar-
anteed output and part-to-part skew characteristics make the
ICS87946I ideal for those clock distribution applications demand-
ing well defined performance and repeatability.
FEATURES
10 single ended LVCMOS outputs, 7
typical output
impedance
Selectable CLK0 and CLK1 LVCMOS clock inputs
CLK0 and CLK1 can accept the following input levels:
LVCMOS and LVTTL
Maximum input/output frequency: 150MHz
Output skew: 350ps (maximum)
3.3V input, 3.3V outputs
-40°C to 85°C ambient operating temperature
Pin compatible to the MPC946
BLOCK DIAGRAM
PIN ASSIGNMENT
DIV_SELA
DIV_SELB
DIV_SELC
MR/nOE
QA0:QA2
QB0:QB2
QC0:QC3
CLK_SEL
CLK0
CLK1
32-Lead LQFP
7mm x 7mm x 1.4mm
Y Package
Top View
HiPerClockS
,&6
0
1
÷1
÷2
0
1
0
1
0
1
32 31 30 29 28 27 26 25
9
10 11 12 13 14 15 16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
GND
QB0
VDDB
QB1
GND
QB2
VDDB
VDDC
CLK_SEL
VDD
CLK0
CLK1
DIV_SELA
DIV_SELB
DIV_SELC
GND
QC3
GND
QC2
V
DDC
QC1
GND
QC0
V
DDC
V
DDA
QA2
GND
QA1
V
DDA
QA0
GND
MR/nOE
ICS87946I
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS87949AYI | 制造商:ICS 功能描述: |
| ICS87949AYILF | 功能描述:IC CLK GENERATOR /1 /2 52-LQFP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™ 标准包装:2,000 系列:- 类型:PLL 频率合成器 PLL:是 输入:晶体 输出:时钟 电路数:1 比率 - 输入:输出:1:1 差分 - 输入:输出:无/无 频率 - 最大:1GHz 除法器/乘法器:是/无 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-LSSOP（0.175"，4.40mm 宽） 供应商设备封装:16-SSOP 包装:带卷 (TR) 其它名称:NJW1504V-TE1-NDNJW1504V-TE1TR |
| ICS87949AYILFT | 功能描述:IC CLOCK GEN LVCMOS 52-LQFP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS87950BYILF | 功能描述:IC CLK MULT LVCMOS/LVTTL 32-LQFP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS87950BYILFT | 功能描述:IC CLOCK MULT 1-9 32-LQFP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
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