參數(shù)資料
型號(hào): IDTCSPT855PA
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時(shí)鐘及定時(shí)
英文描述: PLL BASED CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO28
封裝: TSSOP-28
文件頁(yè)數(shù): 1/10頁(yè)
文件大?。?/td> 78K
代理商: IDTCSPT855PA
1
IDTCSPT855
2.5V PLL CLOCK DRIVER
COMMERCIALANDINDUSTRIALTEMPERATURERANGES
2003
Integrated Device Technology, Inc.
DSC-6203/2
c
IDTCSPT855
PRELIMINARY
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
2.5V PHASE LOCKED LOOP
CLOCK DRIVER
PLL
CLK
6
7
23
22
FBIN
PWRDWN
24
9
AVDD
POWERDOWN
AND TEST
LOGIC
Y0
Y1
12
13
FBOUT
19
20
Y3
26
27
Y2
17
16
3
2
APRIL 2003
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FEATURES:
PLL clock driver for DDR (Double Data Rate) synchronous
DRAM applications
Spread spectrum clock compatible
Operating frequency: 60MHz to 180MHz
Low jitter (cycle-to-cycle): ±50ps
Distributes one differential clock input to four differential clock
outputs
Enters low power mode and 3-state outputs when input CLK
signal is less than 20MHz or PWRDWN is low
Operates from dual 2.5V supplies
Consumes <200
A quiescent current
External feedback pins (FBIN, FBIN) are used to synchronize
outputs to input clocks
Available in TSSOP package
DESCRIPTION:
TheCSPT855isahigh-performance,low-skew,low-jitterzerodelaybuffer
thatdistributesonedifferentialclockinputpair(CLK, CLK)tofourdifferential
output pairs (Y[0:3],Y[0:3])andonedifferentialpairoffeedbackclockoutputs
(FBOUT,FBOUT). WhenPWRDWNishigh,theoutputsswitchinphaseand
frequencywithCLK. WhenPWRDWNislow,alloutputsaredisabledtoahigh-
impedancestate(3-state),andthePLLisshutdown(low-powermode). The
devicealsoentersthislow-powermodewhentheinputfrequencyfallsbelow
asuggesteddetectionfrequencythatisbelow20MHz(typical10MHz). Aninput
frequency detection circuit detects the low-frequency condition, and after
applyinga>20MHzinputsignal,thisdetectioncircuitreactivatesthePLLand
enablestheoutputs.
When AVDD is tied to GND, the PLL is turned off and bypassed for test
purposes. The CSPT855 is also able to track spread spectrum clocking for
reductedEMI.
SincetheCSPT855isbasedonPLLcircuitry,itrequiresastabilizationtime
toachievephase-lockofthePLL. Thisstabilizationtimeisrequiredfollowing
power up.
FUNCTIONAL BLOCK DIAGRAM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IDTCSPT855PG 功能描述:IC PLL CLK DRIVER 2.5V 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:28 系列:- 類型:時(shí)鐘/頻率發(fā)生器 PLL:是 主要目的:Intel CPU 服務(wù)器 輸入:時(shí)鐘 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:3:22 差分 - 輸入:輸出:無(wú)/是 頻率 - 最大:400MHz 電源電壓:3.135 V ~ 3.465 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:64-TFSOP (0.240",6.10mm 寬) 供應(yīng)商設(shè)備封裝:64-TSSOP 包裝:管件
IDTCSPT855-PG 制造商:Integrated Device Technology Inc 功能描述:Zero Delay PLL Clock Driver Single 60MHz to 220MHz 28-Pin TSSOP Tube
IDTCSPT855PG8 功能描述:IC PLL CLK DRIVER 2.5V 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:28 系列:- 類型:時(shí)鐘/頻率發(fā)生器 PLL:是 主要目的:Intel CPU 服務(wù)器 輸入:時(shí)鐘 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:3:22 差分 - 輸入:輸出:無(wú)/是 頻率 - 最大:400MHz 電源電壓:3.135 V ~ 3.465 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:64-TFSOP (0.240",6.10mm 寬) 供應(yīng)商設(shè)備封裝:64-TSSOP 包裝:管件
IDTCSPT855PGG 功能描述:IC PLL CLK DRIVER 2.5V 28-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:時(shí)鐘/頻率發(fā)生器,多路復(fù)用器 PLL:是 主要目的:存儲(chǔ)器,RDRAM 輸入:晶體 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:1:2 差分 - 輸入:輸出:無(wú)/是 頻率 - 最大:400MHz 電源電壓:3 V ~ 3.6 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP(0.173",4.40mm 寬) 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:Digi-Reel® 其它名稱:296-6719-6
IDTCSPT855PGG8 功能描述:IC PLL CLK DRIVER 2.5V 28-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:28 系列:- 類型:時(shí)鐘/頻率發(fā)生器 PLL:是 主要目的:Intel CPU 服務(wù)器 輸入:時(shí)鐘 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:3:22 差分 - 輸入:輸出:無(wú)/是 頻率 - 最大:400MHz 電源電壓:3.135 V ~ 3.465 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:64-TFSOP (0.240",6.10mm 寬) 供應(yīng)商設(shè)備封裝:64-TSSOP 包裝:管件