Datasheet > ICS87972DYILFT

ICS87972DYILFT

更新时间： 2024-09-30 14:51:23

品牌	Logo	应用领域
SPECTRUM		时钟外围集成电路晶体
页数	文件大小	规格书
16页	153K
描述
Processor Specific Clock Generator, 125MHz, CMOS, PQFP52, 10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, MS-026BBC, LQFP-52

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技术参数
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ICS87972DYILFT 技术参数

生命周期：	Obsolete	零件包装代码：	QFP
包装说明：	LQFP,	针数：	52
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.8
JESD-30 代码：	S-PQFP-G52	长度：	10 mm
端子数量：	52	最高工作温度：	85 °C
最低工作温度：	-40 °C	最大输出时钟频率：	125 MHz
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
主时钟/晶体标称频率：	120 MHz	认证状态：	Not Qualified
座面最大高度：	1.6 mm	最大供电电压：	3.465 V
最小供电电压：	3.135 V	标称供电电压：	3.3 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	QUAD
宽度：	10 mm	uPs/uCs/外围集成电路类型：	CLOCK GENERATOR, PROCESSOR SPECIFIC
Base Number Matches：	1

ICS87972DYILFT 数据手册

ICS87972I

LOW SKEW, 1-TO-12

LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER

Integrated

Circuit

Systems, Inc.

GENERAL DESCRIPTION

FEATURES

The ICS87972I is a low skew, LVCMOS/LVTTL

• Fully integrated PLL

ICS

HiPerClockS™

Clock Generator and a member of the

HiPerClockS™ family of High Performance

Clock Solutions from ICS. The ICS87972I has

three selectable inputs and provides fourteen

• Fourteen LVCMOS/LVTTL outputs; (12) clocks,

(1) feedback, (1) sync

• Selectable crystal oscillator interface or LVCMOS/LVTTL

reference clock inputs

LVCMOS/LVTTL outputs.

• CLK0, CLK1 can accept the following input levels:

The ICS87972I is a highly flexible device. Using the crystal

oscillator input, it can be used to generate clocks for a

system. All of these clocks can be the same frequency or

the device can be configured to generate up to three

different frequencies among the three output banks. Using

one of the single ended inputs, the ICS87972I can be used

as a zero delay buffer/multiplier/divider in clock distribu-

tion applications.

LVCMOS or LVTTL

• Output frequency range: 8.33MHz to 125MHz

• VCO range: 200MHz to 480MHz

• Output skew: 550ps (maximum)

• Cycle-to-cycle jitter: 100ps (typical)

• Full 3.3V supply voltage

The three output banks and feedback output each have their

own output dividers which allows the device to generate a

multitude of different bank frequency ratios and output-to-

input frequency ratios. In addition, 2 outputs in Bank C (QC2,

QC3) can be selected to be inverting or non-inverting. The

output frequency range is 8.33MHz to125MHz. Input fre-

quency range is 5MHz to 120MHz.

• -40°C to 85°C ambient operating temperature

• Available in both standard andd lead-free RoHS-compliant

packages

• Compatible with PowerPC™andPentium™ Microprocessors

PIN ASSIGNMENT

The ICS87972I also has a QSYNC output which can be used

for system synchronization purposes. It monitors Bank A and

Bank C outputs and goes low one period of the faster clock

prior to coincident rising edges of Bank A and Bank C clocks.

QSYNC then goes high again when the coincident rising

edges of Bank A and Bank C occur. This feature is used pri-

marily in applications where Bank A and Bank C are running

at different frequencies, and is particularly useful when they

are running at non-integer multiples of one another.

39 38 37 36 35 34 33 32 31 30 29 28 27

FSEL_B1

FSEL_B0

FSEL_A1

FSEL_A0

QA3

FSEL_FB1

QSYNC

GNDO

QC0

Example Applications:

V^DDO

QC1

1. System Clock generator: Use a 16.66MHz Crystal to

generate eight 33.33MHz copies for PCI and four

100MHz copies for the CPU or PCI-X.

QA2

FSEL_C0

FSEL_C1

QC2

ICS87972I

GNDO

QA1

2. Line Card Multiplier: Multiply 19.44MHz from a back

V^DDO

plane to 77.76MHz for the line Card ASICs and Serdes.

QA0

QC3

3. Zero Delay buffer for Synchronous memory: Fan out up

to twelve 100MHz copies from a memory controller ref-

erence clock to the memory chips on a memory module

with zero delay.

GNDO

VCO_SEL

GNDO

INV_CLK

9 10 11 12 13

52-Lead LQFP

10mm x 10mm x 1.4mm package body

Y package

TopView

87972DYI

www.icst.com/products/hiperclocks.html

REV.D NOVEMBER 29, 2005

12 3 4 5 6 7...16

中文翻译

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与ICS87972DYILFT相关器件

型号	品牌	获取价格	描述	数据表
ICS87972DYIT	SPECTRUM	获取价格	Processor Specific Clock Generator, 125MHz, CMOS, PQFP52, 10 X 10 MM, 1.40 MM HEIGHT, MS-0
ICS87972DYIT	ICSI	获取价格	LOW SKEW, 1-TO-12 LVCMOS CLOCK MULTIPLIER/ZERO DELAY BUFFER
ICS87972I	ICSI	获取价格	LOW SKEW, 1-TO-12 LVCMOS CLOCK MULTIPLIER/ZERO DELAY BUFFER
ICS87972I	IDT	获取价格	LOW SKEW, 1-TO-12 LVCMOS/LVTTL CLOCK MULTIPLIER/ZERO DELAY BUFFER
ICS87973BYILF	IDT	获取价格	PLL Based Clock Driver, 12 True Output(s), 0 Inverted Output(s), CMOS, PQFP52, 10 X 10 MM,
ICS87973CYI	IDT	获取价格	PLL Based Clock Driver, 12 True Output(s), 0 Inverted Output(s), PQFP52, 10 X 10 MM, 1.40
ICS87973CYILF	IDT	获取价格	PLL Based Clock Driver, 12 True Output(s), 0 Inverted Output(s), PQFP52, 10 X 10 MM, 1.40
ICS87973CYILFT	IDT	获取价格	PLL Based Clock Driver, 12 True Output(s), 0 Inverted Output(s), PQFP52, 10 X 10 MM, 1.40
ICS87973CYIT	IDT	获取价格	PLL Based Clock Driver, 12 True Output(s), 0 Inverted Output(s), PQFP52, 10 X 10 MM, 1.40
ICS87973DYI	IDT	获取价格	PLL Based Clock Driver, 13 True Output(s), 0 Inverted Output(s), CMOS, PQFP52, 10 X 10 MM,

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