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參數(shù)資料
| 型號： | PE7644DWE-FREQ |
| 廠商： | PLETRONICS INC |
| 元件分類： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 40 MHz - 250 MHz, PECL OUTPUT |
| 封裝： | LEADLESS PACKAGE-6 |
| 文件頁數(shù)： | 4/4頁 |
| 文件大?。?/td> | 119K |
| 代理商： | PE7644DWE-FREQ |
Mar 2004
(425) 776 -1880, Fax: (425) 776-2760, ple-sales@pletronics.com, www.pletronics.com
6A
Pl tronics, Inc.
PECL and LVDS Layout Guidelines Continued
Pl tronics, Inc.
19013 36th Ave. W, Suite H Lynnwood, WA 98036 USA
Manufacturer of High Quality Frequency Control Products
.
Vcc
Vcc - 2.00 V
GND
Out
Vcc
Oscillator
Vcc
GND
Out
Vcc
Oscillator
PECL Terminations:
LVDS Terminations:
Mixed System Power Supply:
50 ohm
Vcc
GND
Out
Vcc
Oscillator
R load
Vcc
GND
Q Out
QN Out
Vcc
Oscillator
100 ohm
R1
R2
Suggested Terminations for 50 ohm impedance matched termination
Simple termination for NON impedance matched termination
Vcc
5.0 V
3.3 V
2.5 V
R1
82 ohm
130 ohm
249 ohm
Vcc
5.0 V
3.3 V
2.5 V
R load
274 ohm
147 ohm
86.6 ohm
R2
130 ohm
82 ohm
61.9 ohm
Thevenin Equivalent Termination
Design PCB traces for 50 ohm characteristic impedance
To use multiple supply voltages requires level translation. Direct circuit connection is not valid.
Mixed supply voltages are allowed. No translation is necessary. (ECL is returned to the most positive
supply and this is common to all circuits)
Mixed supply voltages are allowed. LVDS signal levels are power supply independent.
3.3 V LVDS oscillators properly interface 2.5 V Logic Arrays for example.
PECL
ECL
LVDS
相關PDF資料 |
PDF描述 |
|---|---|
| PE7644DEV-FREQ-T250 | CRYSTAL OSCILLATOR, CLOCK, 40 MHz - 250 MHz, PECL OUTPUT |
| PE7644DEW-FREQ-T1K | CRYSTAL OSCILLATOR, CLOCK, 80 MHz - 250 MHz, PECL OUTPUT |
| PE7845DW-FREQ-T1K | CRYSTAL OSCILLATOR, CLOCK, 80 MHz - 250 MHz, PECL OUTPUT |
| PE7844DW-FREQ-T1K | CRYSTAL OSCILLATOR, CLOCK, 80 MHz - 250 MHz, PECL OUTPUT |
| PE7620DW-FREQ-T1K | CRYSTAL OSCILLATOR, CLOCK, 80 MHz - 250 MHz, PECL OUTPUT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PE7645DEV | 制造商:PLETRONICS 制造商全稱:Pletronics, Inc. 功能描述:PE76D Series 3.3 V PECL Clock Oscillators |
| PE7645DEW | 制造商:PLETRONICS 制造商全稱:Pletronics, Inc. 功能描述:PE76D / PE78D Series 2.5 V PECL Clock Oscillators |
| PE7645DV | 制造商:PLETRONICS 制造商全稱:Pletronics, Inc. 功能描述:PE76D Series 3.3 V PECL Clock Oscillators |
| PE7645DW | 制造商:PLETRONICS 制造商全稱:Pletronics, Inc. 功能描述:PE76D / PE78D Series 2.5 V PECL Clock Oscillators |
| PE771003 | 功能描述:POWER ENTRY FILTERED 3A SCREW RoHS:是 類別:濾波器 >> 電源輸入 - 模塊 系列:PE70 產(chǎn)品培訓模塊:5707 Power Entry Module 標準包裝:10 系列:5707 保險絲盒:包括在內(nèi) 安裝類型:面板安裝，螺孔 濾波器類型:通用型 特點:防塵，保險絲盒，屏蔽，防水 電壓:125/250VAC 電流:1A 端接類型:快速連接 類型:IEC 320-C14（公引腳） 其它名稱:486-1263 |
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