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参数资料
| 型号： | ICS8701-01YLF |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 250 MHz, OTHER CLOCK GENERATOR, PQFP48 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, LQFP-48 |
| 文件页数： | 1/10页 |
| 文件大小： | 211K |
| 代理商： | ICS8701-01YLF |
Integrated
Circuit
Systems, Inc.
8701-01
www.icst.com
REV. A - AUGUST 28, 2000
ICS8701-01
LOW SKEW 1, 2 CLOCK
GENERATOR W/POLARITY CONTROL
1
GENERAL DESCRIPTION
The ICS8701-01 is a low skew, ÷1, ÷2 Clock
Generator and a member of the HiPerClockS
family of High Performance Clock Solutions
from ICS. The low impedance LVCMOS outputs
are designed to drive 50 series or parallel ter-
minated transmission lines. The effective fanout can be in-
creased from 20 to 40 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/
output enable input, nMR/OE, resets the internal dividers and
controls the active and high impedance states of all outputs.
The output polarity inputs, INV0:1, control the polarity (invert-
ing or non-inverting) of the outputs of each bank. Outputs
QA0-QA4 are inverting for every combination of the INV0:1
input. The timing relationship between the inverting and non-
inverting outputs at different frequencies is shown in the Tim-
ing Diagrams.
The ICS8701-01 is characterized at 3.3V and mixed 3.3V in-
put supply, and 2.5V output supply operating modes. Guar-
anteed bank, output and part-to-part skew characteristics
make the ICS8701-01 ideal for those clock distribution appli-
cations demanding well defined performance and repeatabil-
ity.
FEATURES
20 LVCMOS outputs, 7 typical output impedance
Output frequency up to 250 MHz
250ps bank skew, 300ps output skew, 350ps multiple
frequency skew, 700ps part-to-part skew
Selectable inverting and non-inverting outputs
LVCMOS / LVTTL clock input
LVCMOS / LVTTL control inputs
Bank enable logic allows unused banks to be disabled
in reduced fanout applications
3.3V or mixed 3.3V input, 2.5V output operating
supply modes
48 lead low-profile QFP (LQFP), 7mm x 7mm x 1.4mm
package body, 0.5mm package lead pitch
0°C to 70°C ambient operating temperature
Other divide values available on request
BLOCK DIAGRAM
PIN ASSIGNMENT
HiPerClockS
,&6
DIV_SELA
DIV_SELB
DIV_SELC
DIV_SELD
nMR/OE
INV0
INV1
QAO - QA4
QB0 - QB4
QC0 - QC4
QD0 - QD4
LVCMOS_CLK
1
0
÷1
÷2
1
0
1
0
1
0
Output
Polarity
Control
48 47 46 45 44 43 42 41 40 39 38 37
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
QC3
VDDOC
QC4
QD0
VDDOD
QD1
GND
QD2
GND
QD3
VDDOD
QD4
QB1
VDDOB
QB0
QA4
VDDOA
QA3
GND
QA2
GND
QA1
VDDOA
QA0
DIV_SELA
DIV_SELB
LVCMOS_CLK
GND
VDDI
INV0
GND
INV1
VDDI
nMR/OE
DIV_SELC
DIV_SELD
GND
QB2
GND
QB3
VDDOB
QB4
QC0
VDDOC
QC1
GND
QC2
GND
48-Pin LQFP
Y Package
Top View
ICS8701-01
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| ICS87016AYILF | 功能描述:IC CLOCK GENERATOR 1-16 48-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:27 系列:Precision Edge® 类型:频率合成器 PLL:是 输入:PECL，晶体 输出:PECL 电路数:1 比率 - 输入:输出:1:1 差分 - 输入:输出:无/是 频率 - 最大:800MHz 除法器/乘法器:是/无 电源电压:3.135 V ~ 5.25 V 工作温度:0°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
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