參數(shù)資料
型號: ICS557GI-05ALFT
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 1/12頁
文件大?。?/td> 0K
描述: IC CLK SOURCE QUAD DIFF 20TSSOP
產(chǎn)品培訓(xùn)模塊: PCI-Express
標(biāo)準(zhǔn)包裝: 1
系列: PCI Express® (PCIe)
類型: 擴(kuò)展頻譜時(shí)鐘發(fā)生器,扇出緩沖器(分配)
PLL:
主要目的: PCI Express(PCIe)
輸入: 時(shí)鐘,晶體
輸出: HCSL,LVDS
電路數(shù): 1
比率 - 輸入:輸出: 1:4
差分 - 輸入:輸出: 無/是
頻率 - 最大: 200MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: 800-2533-6
DATASHEET
QUAD DIFFERENTIAL PCI-EXPRESS GEN1 CLOCK SOURCE
ICS557-05A
IDT
QUAD DIFFERENTIAL PCI-EXPRESS GEN1 CLOCK SOURCE
1
ICS557-05A
REV O 112111
Description
The ICS557-05A is a spread-spectrum clock generator that
supports PCI-Express requirements. It is used in PC or
embedded systems to substantially reduce
electro-magnetic interference (EMI). The device provides
four differential HCSL or LVDS high-frequency outputs with
spread spectrum capability. The output frequency and
spread type are selectable using external pins.
Features
Packaged in 20-pin TSSOP
RoHS 5 (green) or RoHS 6 (green and lead free)
complaint package
Supports PCI-Express applications
Four differential spread spectrum clock outputs
Spread spectrum for EMI reduction
Uses external 25 MHz clock or crystal input
Power down pin turns off chip
OE control tri-states outputs
Spread and frequency selection via external pins
Spread Bypass option available
Industrial temperature range available
For PCIe Gen2 applications, see the 5V41066
For PCIe Gen3 applications, see the 5V41236
Block Diagram
Spread
Spectrum/
Output
clock
selection
CLKOUTA
Rr(IREF)
PLL Clock
Synthesis
3
GND
VDD
Clock
Oscillator
X1
SEL[2:0]
Spread
Spectrum
Circuitry
2
CLKOUTB
CLKOUTD
X2
25 MHz
crystal or
clock
OE
PD
Optional tuning crystal
capacitors
CLKOUTD
CLKOUTC
CLKOUTB
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