參數(shù)資料
型號: PE8844DV-106.25M
廠商: PLETRONICS INC
元件分類: XO, clock
英文描述: OSC 3.3V SMT 7X5 PECL
中文描述: CRYSTAL OSCILLATOR, CLOCK, 106.25 MHz, PECL OUTPUT
文件頁數(shù): 4/4頁
文件大?。?/td> 75K
代理商: PE8844DV-106.25M
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(guān)PDF資料
PDF描述
PE8845DV-106.25M OSC 3.3V SMT 7X5 PECL
PE8820DEV-106/212M-T1K CRYSTAL OSCILLATOR, CLOCK, 106.25 MHz, PECL OUTPUT
PE8845DEV-106/212M-T250 CRYSTAL OSCILLATOR, CLOCK, 106.25 MHz, PECL OUTPUT
PE8844DCV-106/212M-T500 CRYSTAL OSCILLATOR, CLOCK, 106.25 MHz, PECL OUTPUT
PE8845DCV-106/212M-T1K CRYSTAL OSCILLATOR, CLOCK, 106.25 MHz, PECL OUTPUT
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