- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄360649 > 9883 (Intel Corp.) Advanced 10/100 Umnmanaged Repeater PDF資料下載
參數(shù)資料
| 型號： | 9883 |
| 廠商： | Intel Corp. |
| 英文描述： | Advanced 10/100 Umnmanaged Repeater |
| 中文描述： | 高級10/100 Umnmanaged直放站 |
| 文件頁數(shù)： | 36/56頁 |
| 文件大?。?/td> | 719K |
| 代理商： | 9883 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁當(dāng)前第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁
LXT9883/9863
—
Advanced 10/100 Unmanaged Repeater
36
Datasheet
Document #: 249115
Revision #: 003
Rev. Date: 08/07/01
4.2.7
Twisted-Pair Interface
The LXT98x3 transmitter uses standard 1:1 magnetics for both receive and transmit. Nonetheless,
system designers should take precautions to minimize parasitic shunt capacitance and meet return
loss specifications. These steps include:
Place magnetics as close as possible to the LXT98x3.
Keep transmit pair traces short.
Do not route transmit pair adjacent to a ground plane. Eliminate planes under the transmit
traces completely. Otherwise, keep planes 3-4 layers away.
Improve EMI performance by filtering the output center tap supply. A single ferrite bead may
be used in the center tap supply to all ports. All ports draw a combined total of > 1000 mA, so
the bead should be rated at > 1500 mA.
Place the 270pF 5% capacitors at TPIP and TPIN to improve the signal-to-noise immunity at
the receiver.
In addition, follow all the standard guidelines for a twisted-pair interface:
Route the signal pairs differentially, close together. Allow nothing to come between them.
Keep distances as short as possible; both traces should have the same length.
Avoid vias and layer changes.
Keep the transmit and receive pairs apart to avoid cross-talk.
To provide maximum isolation, place entire receive termination network on one side and
transmit on the other side of the PCB.
Bypass common-mode noise to ground on the in-board side of the magnetics using 0.01
μ
F
capacitors.
Keep termination circuits grouped closely together and on the same side of the board.
Always put termination circuits close to the source end of any circuit.
4.2.7.1
Magnetics Information
The LXT98x3 requires a 1:1 ratio for the receive transformers and a 1:1 ratio for the transmit
transformers. The transformer isolation voltage should be rated at 2kV to protect the circuitry from
static voltages across the connectors and cables. Refer to
Table 17
for magnetics specifications.
Table 17. LXT98x3 Magnetics Specifications
Parameter
Min
Nom
Max
Units
Test Condition
Rx turns ratio
–
1 : 1
–
–
Tx turns ratio
–
1 : 1
–
–
Insertion loss
0.0
–
1.1
dB
80 MHz
Primary inductance
350
–
–
μ
H
Transformer isolation
–
2
–
kV
Differential to common mode rejection
-40
–
–
dB
.1 to 60 MHz
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 989AS-470M | Fixed Inductors for Surface Mounting |
| 989BS-110M | Fixed Inductors for Surface Mounting |
| 989BS-1R3N | Fixed Inductors for Surface Mounting |
| 989BS-270M | Fixed Inductors for Surface Mounting |
| 989BS-2R1N | Fixed Inductors for Surface Mounting |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 9883 0101000 | 功能描述:多芯電纜 3 SH PR #20 PP HDPE RoHS:否 制造商:Alpha Wire 導(dǎo)體數(shù)量:3 線規(guī) - 美國線規(guī)（AWG）:16 絞合:19 x 29 屏蔽:Shielded 長度:100 ft 電壓額定值:600 V 外殼材料:Polytetrafluoroethylene (PTFE) 絕緣材料:Polytetrafluoroethylene (PTFE) 類型:Communication and Control |
| 9883 010500 | 功能描述:多芯電纜 20AWG 3PR SHIELD 500ft SPOOL BLACK RoHS:否 制造商:Alpha Wire 導(dǎo)體數(shù)量:3 線規(guī) - 美國線規(guī)（AWG）:16 絞合:19 x 29 屏蔽:Shielded 長度:100 ft 電壓額定值:600 V 外殼材料:Polytetrafluoroethylene (PTFE) 絕緣材料:Polytetrafluoroethylene (PTFE) 類型:Communication and Control |
| 9883 010BULK | 制造商:Belden Inc 功能描述:3 SH PR #20 PP HDPE BLACK BULK |
| 988300-000 | 功能描述:手工工具 AT-3131 RoHS:否 制造商:Molex 產(chǎn)品:Extraction Tools 類型: 描述/功能:Extraction tool |
| 988301-000 | 制造商:TE Connectivity 功能描述:AT-3132 - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。