Datasheet > ICS345

ICS345

更新时间： 2024-09-25 22:48:15

品牌	Logo	应用领域
矽成 - ICSI		/
页数	文件大小	规格书
7页	154K
描述
Triple PLL Field Programmable SS VersaClock Synthesizer

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ICS345 数据手册

ICS345

Triple PLL Field Programmable SS VersaClock Synthesizer

Description

Features

• Packaged as 20-pin SSOP (QSOP)

• Spread spectrum capability

The ICS345 field programmable clock synthesizer

generates up to nine high-quality, high-frequency clock

outputs including multiple reference clocks from a

low-frequency crystal or clock input. It is designed to

replace crystals and crystal oscillators in most

electronic systems.

• Eight addressable registers

• Replaces multiple crystals and oscillators

• Output frequencies up to 200 MHz at 3.3 V

• Input crystal frequency of 5 to 27 MHz

• Input clock frequency of 2 to 50 MHz

• Up to nine reference outputs

Using ICS’ VersaClock software to configure PLLs

and outputs, the ICS345 contains a One-Time

Programmable (OTP) ROM to allow field

programmability. Programming features include eight

selectable configuration registers, up to two sets of four

low-skew outputs, and optional Spread Spectrum

outputs.

• Up to two sets of four low-skew outputs

• Operating voltages of 3.3 V

• Advanced, low-power CMOS process

• For one output clock, use the ICS341. For two output

clocks, see the ICS342. For three output clocks, see

the ICS343. For more than three outputs, see the

ICS345 or ICS348.

Using Phase-Locked Loop (PLL) techniques, the

device runs from a standard fundamental mode,

inexpensive crystal, or clock. It can replace multiple

crystals and oscillators, saving board space and cost.

• Available in Pb (lead) free packaging

The ICS345 is also available in factory programmed

custom versions for high-volume applications.

Block Diagram

VDD

PLL1 with

Spread

Spectrum

CLK1

CLK2

CLK3

CLK4

CLK5

CLK6

CLK7

CLK8

CLK9

OTP

S2:S0

ROM

with

PLL

Divide

Logic

and

Output

Enable

Control

Values

PLL2

PLL3

Crystal or

clock input

X1/ICLK

Crystal

Oscillator

GND

External capacitors are

required with a crystal input.

PDTS

MDS 345 D

Revision 090704

Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com

12 3 4 5 6 7

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与ICS345相关器件

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ICS345RILF	IDT	获取价格	Clock Generator, CMOS, PDSO20
ICS345RIP	ICSI	获取价格	Triple PLL Field Programmable SS VersaClock Synthesizer
ICS345RIP	IDT	获取价格	TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER
ICS345RIPLF	IDT	获取价格	TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER
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ICS345RI-XX	IDT	获取价格	TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER
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ICS345RI-XXT	IDT	获取价格	TRIPLE PLL FIELD PROGRAMMABLE SS VERSACLOCK SYNTHESIZER