Datasheet > ICS9248G-50-T

ICS9248G-50-T

更新时间： 2024-09-25 20:09:27

品牌	Logo	应用领域
艾迪悌 - IDT		光电二极管
页数	文件大小	规格书
11页	259K
描述
Clock Generator, PDSO28, TSOP-28

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技术参数
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ICS9248G-50-T 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	TSSOP, TSSOP28,.3	Reach Compliance Code：	unknown
风险等级：	5.92	JESD-30 代码：	R-PDSO-G28
JESD-609代码：	e0	端子数量：	28
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：	TSSOP
封装等效代码：	TSSOP28,.3	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	电源：	2.5,3.3 V
认证状态：	Not Qualified	子类别：	Clock Generators
表面贴装：	YES	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
Base Number Matches：	1

ICS9248G-50-T 数据手册

Integrated

Circuit

Systems, Inc.

ICS9248-50

Frequency Timing Generator for Pentium II Systems

General Description

Features

•

Generates the following system clocks:

The ICS9248-50 is the Main clock solution for Notebook

designs using the Intel 440BX style chipset. Along with an

SDRAM buffer such as the ICS9179-03, it provides all

necessary clock signals for such a system.

- 2 CPU (2.5V) up to 100MHz.

- 6 PCI (3.3V) @ 33.3MHz (Includes one free running).

- 2 REF clks (3.3V) at 14.318MHz.

Skew characteristics:

Spread spectrum may be enabled by driving pin 26, SPREAD#

active (Low) at power-on. Spread spectrum typically reduces

systemEMIby8dBto10dB. ThissimplifiesEMIqualification

without resorting to board design iterations or costly shielding.

The ICS9248-50 employs a proprietary closed loop design,

which tightly controls the percentage of spreading over

process and temperature variations.

•

- CPU – CPU<175ps

- PCI – PCI < 500ps

- CPU(early) – PCI = 1.5ns – 4ns.

•

Supports Spread Spectrum modulation for CPU and PCI

clocks, 0.5% down spread

Efficient Power management scheme through stop

clocks and power down modes.

Uses external 14.318MHz crystal, no external load cap

required for CL=18pF crystal.

28-pin (209 mil) SSOP and (6.1mm) TSSOP package

Block Diagram

Pin Configuration

28-Pin SSOP & TSSOP

Power Groups

VDD, GND=PLLcore

VDDREF, GNDREF=REF(0:1), X1, X2

VDDPCI, GNDPCI=PCICLK_F, PCICLK(0:4)

VDD48, GND48 = 48MHz, 48/24MHz

Pentium is a trademark on Intel Corporation.

ICS reserves the right to make changes in the device data identified in

this publication without further notice. ICS advises its customers to

obtain the latest version of all device data to verify that any

9248-50 Rev - H 03/19/01

information being relied upon by the customer is current and accurate.

12 3 4 5 6 7...11

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与ICS9248G-50-T相关器件

型号	品牌	获取价格	描述	数据表
ICS9248G-92	IDT	获取价格	Clock Generator, PDSO48, TSOP-48
ICS9248YF-103	ICSI	获取价格	Frequency Generator & Integrated Buffers for PENTIUM/ProTM
ICS9248YF-103	IDT	获取价格	Processor Specific Clock Generator, 137MHz, PDSO48, SSOP-48
ICS9248YF-103LF	IDT	获取价格	Processor Specific Clock Generator, 137MHz, PDSO48, SSOP-48
ICS9248YF-107	ICSI	获取价格	Frequency Timing Generator for PENTIUM II Systems
ICS9248YF-110	ICSI	获取价格	AMD-K7TM System Clock Chip
ICS9248YF-110LF	IDT	获取价格	Processor Specific Clock Generator, 115MHz, CMOS, PDSO48, 0.300 INCH, SSOP-48
ICS9248YF-112	IDT	获取价格	Processor Specific Clock Generator, 150MHz, PDSO48, 0.300 INCH, SSOP-48
ICS9248YF-112LF	IDT	获取价格	Processor Specific Clock Generator, 150MHz, PDSO48, 0.300 INCH, SSOP-48
ICS9248YF-112-T	ICSI	获取价格	Frequency Generator & Integrated Buffers for

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