Datasheet > ICS87949AY-01

ICS87949AY-01

更新时间： 2024-11-17 03:14:11

品牌	Logo	应用领域
矽成 - ICSI		时钟发生器逻辑集成电路驱动
页数	文件大小	规格书
13页	127K
描述
LOW SKEW ±1, ±2 CLOCK GENERATOR

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中文翻译

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数据手册

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ICS87949AY-01 数据手册

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, 7Ω typical 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 50Ω series 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

CLK0

CLK1

÷1

÷2

48 47 46 45 44 43 42 41 40 39 38 37

MR/nOE

CLK_SEL

V^DD

PCLK

nPCLK

GND

QC0

V^DDC

QC1

GND

QC2

V^DDC

QC3

GND

QD5

CLK0

QA0 - QA1

QB0 - QB2

QC0 - QC3

PCLK_SEL

DIV_SELA

CLK1

PCLK

ICS87949-01

nPCLK

PCLK_SEL

DIV_SELA

DIV_SELB

DIV_SELC

DIV_SELD

DIV_SELB

DIV_SELC

13 14 15 16 17 18 19 20 21 22 23 24

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

12 3 4 5 6 7...13

中文翻译

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与ICS87949AY-01相关器件

型号	品牌	获取价格	描述	数据表
ICS87949AY-01LF	IDT	获取价格	Low Skew Clock Driver, 15 True Output(s), 0 Inverted Output(s), PQFP48, 7 X 7 MM, 1.40 MM
ICS87949AY-01T	IDT	获取价格	Low Skew Clock Driver, 15 True Output(s), 0 Inverted Output(s), PQFP48, 7 X 7 MM, 1.40 MM
ICS87949AY-01T	ICSI	获取价格	LOW SKEW ±1, ±2 CLOCK GENERATOR
ICS87949AYI-01LF	IDT	获取价格	Low Skew Clock Driver, 15 True Output(s), 0 Inverted Output(s), PQFP48, 7 X 7 MM, 1.40 MM
ICS87949AYI-01LFT	IDT	获取价格	Low Skew Clock Driver, 15 True Output(s), 0 Inverted Output(s), PQFP48, 7 X 7 MM, 1.40 MM
ICS87949AYILF	IDT	获取价格	Low Skew Clock Driver, 87949 Series, 15 True Output(s), 0 Inverted Output(s), PQFP52, 10 X
ICS87949AYILFT	IDT	获取价格	Low Skew Clock Driver, 87949 Series, 15 True Output(s), 0 Inverted Output(s), PQFP52, 10 X
ICS87949AYLFT	IDT	获取价格	Low Skew Clock Driver, 15 True Output(s), 0 Inverted Output(s), PQFP52, 10 X 10 MM, 1.40 M
ICS87949AYT	IDT	获取价格	Low Skew Clock Driver, 15 True Output(s), 0 Inverted Output(s), PQFP52, 10 X 10 MM, 1.40 M
ICS87950AYLF	IDT	获取价格	Clock Generator, 180MHz, PQFP32, 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-32

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