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參數(shù)資料
| 型號： | LU3X54FT |
| 英文描述： | QUAD-FET (Fast Ethernet Transceiver) for 10Base-T/100Base-TX/FX |
| 中文描述： | 四場效應(yīng)管（快速以太網(wǎng)收發(fā)器）的10Base-T/100Base-TX/FX |
| 文件頁數(shù)： | 42/54頁 |
| 文件大?。?/td> | 677K |
| 代理商： | LU3X54FT |
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LU3X54FT
QUAD-FET for 10Base-T/100Base-TX/FX
Data Sheet
July 2000
42
Lucent Technologies Inc.
Package and Thermal Characteristics
The LU3X54FT is packaged in a 208-pin SQFP plain plastic package (LU3X54FT-S208) or with an internal heat
spreader (LU3X54FT-HS208). Both packages have identical dimensions and conform to the outline diagram in this
data sheet. The heat spreader package provides enhanced thermal performance with a lower Theta-JC and
Theta-JA.
The LU3X54FT-S208 plain package thermal characteristics can be enhanced with the use of an external heat sink.
When a system designer finds that the die temperature exceeds either their or Lucent’s (125
°
C) maximum temper-
ature limit, a heat sink is then often considered. Heat sink fitness for use needs to be determined by the system
user! Each customers’ requirements tend to be unique, determined by the thermal and physical constraints of the
system; among them are cost, required Theta-CA, headroom above package, direction of airflow, preferred method
of attachment, etc. Table 28. provides the thermal characteristics for each package and for the plain package with
an Aavid Thermal Technology 70035B01100 external heat sink. Figure 9 provides a curve of Theta-JA versus air-
flow when using this Aavid heat sink on the plain package. This heat sink is one example of a heat sink that can
work with our LU3X54FT transceiver.
Table 28. Thermal Characteristics
Note: The above table is for the LU3X54FT in the 208SQFP style package (die up).
* Aavid 700353B01100.
Figure 9. Thermal Characteristics
Theta-JC
(top)
Theta-JA (
°
C/W)
(
°
C/W)
20
20
10
0 fpm
26
23.5
16.1
200 fpm
22.6
13.5
13.3
500 fpm
20.9
12
12
Plain 208SQFP
Plain 208SQFP w/ Heat Sink*
208SQFP w/ Heat Spreader
AIRFLOW (fpm)
θ
-
°
C
10.00
12.00
14.00
16.00
18.00
20.00
22.00
24.00
100
200
300
400
500
600
0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LU3X54FTL | QUAD-FET for 10Base-T/100Base-TX/FX |
| LU3X54FTL-HS208-DB | QUAD-FET for 10Base-T/100Base-TX/FX |
| LU3X54FT | Quad-FET (Fast Ethernet Transceiver) for 10Base-T/100Base-TX/FX(應(yīng)用于10基數(shù)-T和100基數(shù)-TX/FX的四快速以太網(wǎng)收發(fā)器) |
| LU5X34F | Quad Gigabit Ethernet Transceiver |
| LU5X34F | Quad Gigabit Ethernet Transceiver(千兆位以太網(wǎng)四收發(fā)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LU3X54FTL | 制造商:AGERE 制造商全稱:AGERE 功能描述:QUAD-FET for 10Base-T/100Base-TX/FX |
| LU3X54FTLHS208 | 制造商:Alcatel-Lucent 功能描述:3X54FTLHS208 |
| LU3X54FTL-HS208-DB | 制造商:AGERE 制造商全稱:AGERE 功能描述:QUAD-FET for 10Base-T/100Base-TX/FX |
| LU3X54FTLHS208-DB | 制造商:Alcatel-Lucent 功能描述:3X54FTLHS208-DB |
| LU400 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:NEMA Cabinet Legs |
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