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参数资料
| 型号： | PE1144ME-FREQ |
| 厂商： | PLETRONICS INC |
| 元件分类： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 1.5 MHz - 180 MHz, PECL OUTPUT |
| 文件页数： | 4/4页 |
| 文件大小： | 69K |
| 代理商： | PE1144ME-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
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| PE1144MEV-FREQ | CRYSTAL OSCILLATOR, CLOCK, 1 MHz - 250 MHz, PECL OUTPUT |
| PE1145MEV-FREQ | CRYSTAL OSCILLATOR, CLOCK, 1 MHz - 250 MHz, PECL OUTPUT |
| PE1145W-FREQ-T250 | CRYSTAL OSCILLATOR, CLOCK, 180 MHz - 750 MHz, PECL OUTPUT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PE1144MEV | 制造商:PLETRONICS 制造商全称:Pletronics, Inc. 功能描述:PE11M Series 3.3 V PECL Clock Oscillators |
| PE1144MV | 制造商:PLETRONICS 制造商全称:Pletronics, Inc. 功能描述:PE11M Series 3.3 V PECL Clock Oscillators |
| PE1144TEV | 制造商:PLETRONICS 制造商全称:Pletronics, Inc. 功能描述:PE11T Series 3.3 V PECL Clock Oscillators |
| PE1144TV | 制造商:PLETRONICS 制造商全称:Pletronics, Inc. 功能描述:PE11T Series 3.3 V PECL Clock Oscillators |
| PE1145BEV | 制造商:PLETRONICS 制造商全称:Pletronics, Inc. 功能描述:PE11B Series 3.3 V PECL Clock Oscillators |
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