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CDC582

更新时间: 2024-11-16 22:40:11
品牌 Logo 应用领域
德州仪器 - TI 驱动器输入元件时钟
页数 文件大小 规格书
10页 145K
描述
3.3-V PHASE-LOCK LOOP CLOCK DRIVER WITH DIFFERENTIAL LVPECL CLOCK INPUTS

CDC582 数据手册

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CDC582  
3.3-V PHASE-LOCK LOOP CLOCK DRIVER  
WITH DIFFERENTIAL LVPECL CLOCK INPUTS  
SCAS446B – JULY 1994 – REVISED FEBRUARY 1996  
Low Output Skew for Clock-Distribution  
and Clock-Generation Applications  
State-of-the-Art EPIC-ΙΙB BiCMOS Design  
Significantly Reduces Power Dissipation  
Operates at 3.3-V V  
External Feedback Input (FBIN) Is Used to  
Synchronize the Outputs With the Clock  
Inputs  
CC  
Distributes Differential LVPECL Clock  
Inputs to 12 TTL-Compatible Outputs  
Application for Synchronous DRAMs  
Two Select Inputs Configure Up to Nine  
Outputs to Operate at One-Half or Double  
the Input Frequency  
Distributed V  
and Ground Pins Reduce  
CC  
Switching Noise  
No External RC Network Required  
Packaged in 52-Pin Quad Flatpack  
PAH PACKAGE  
(TOP VIEW)  
52 51 50 49 48 47 46 45 44 43 42 41 40  
39  
GND  
1Y1  
V
4Y3  
GND  
V
4Y2  
GND  
V
4Y1  
GND  
GND  
V
3Y3  
GND  
1
CC  
38  
37  
36  
35  
34  
33  
32  
31  
30  
29  
28  
27  
2
V
3
CC  
GND  
1Y2  
4
CC  
5
V
6
CC  
GND  
1Y3  
7
CC  
8
V
9
CC  
GND  
GND  
2Y1  
10  
11  
12  
13  
CC  
V
CC  
14 15 16 17 18 19 20 21 22 23 24 25 26  
description  
TheCDC582isahigh-performance, low-skew, low-jitterclockdriver. Itusesaphase-lockloop(PLL)toprecisely  
align the frequency and phase of the clock output signals to the differential LVPECL clock (CLKIN, CLKIN) input  
signals. It is specifically designed to operate at speeds from 50 MHz to 100 MHz or down to 25 MHz on outputs  
configured as half-frequency outputs. The CDC582 operates at 3.3-V V  
.
CC  
The feedback input (FBIN) synchronizes the frequency of the output clocks with the input clock  
(CLKIN, CLKIN) signals. One of the twelve output clocks must be fed back to FBIN for the PLL to maintain  
synchronizationbetweenthedifferentialCLKINandCLKINinputsandtheoutputs. Theoutputusedasfeedback  
is synchronized to the same frequency as the clock (CLKIN and CLKIN) inputs.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
EPIC-ΙΙB is a trademark of Texas Instruments Incorporated.  
Copyright 1996, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

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