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參數(shù)資料
| 型號： | XRT83VSH28IB-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 36/75頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU SH E1 OCTAL 225BGA |
| 標準包裝： | 84 |
| 類型： | 線路接口裝置（LIU） |
| 驅(qū)動器/接收器數(shù)： | 8/8 |
| 規(guī)程： | T1，E1，J1 |
| 電源電壓： | 3.14 V ~ 3.47 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 225-BGA |
| 供應商設(shè)備封裝： | 225-BGA（19x19） |
| 包裝： | 托盤 |
| 其它名稱： | 1016-1482 XRT83VSH28IB-F-ND |
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XRT83VSH28
38
REV. 2.0.0
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
4.3
Power Failure Protection
For 1:1 or 1+1 line card redundancy in E1 applications, power failure could cause a line card to change the
characteristics of the line impedance, causing a degradation in system performance. The XRT83VSH28 was
designed to ensure reliability during power failures. The LIU has patented high impedance circuits that allow
the receiver inputs and the transmitter outputs to be in "High" impedance when the LIU experiences a power
failure or when the LIU is powered off.
NOTE: For power failure protection, a transformer must be used to couple to the line interface. See the TAN-56 application
note for more details.
4.4
Overvoltage and Overcurrent Protection
Physical layer devices such as LIUs that interface to telecommunications lines are exposed to overvoltage
transients posed by environmental threats. An Overvoltage transient is a pulse of energy concentrated over a
small period of time, usually under a few milliseconds. These pulses are random and exceed the operating
conditions of CMOS transceiver ICs. Electronic equipment connecting to data lines are susceptible to many
forms of overvoltage transients such as lightning, AC power faults and electrostatic discharge (ESD). There are
three important standards when designing a telecommunications system to withstand overvoltage transients.
UL1950 and FCC Part 68
Telcordia (Bellcore) GR-1089
ITU-T K.20, K.21 and K.41
4.5
Non-Intrusive Monitoring
In non-intrusive monitoring applications, the transmitters are shut off by setting TxON "Low". The receivers
must be actively receiving data without interfering with the line impedance. The XRT83VSH28’s internal
termination ensures that the line termination meets E1 specifications for 75
or 120 while monitoring the
data stream. System integrity is maintained by placing the non-intrusive receiver in "High" impedance,
equivalent to that of a 1+1 redundancy application. A simplified block diagram of non-intrusive monitoring is
shown in Figure 27.
FIGURE 27. SIMPLIFIED BLOCK DIAGRAM OF A NON-INTRUSIVE MONITORING APPLICATION
Line Card Transceiver
Non-Intrusive Receiver
Node
XRT83VSH28
Data Traffic
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT83VSH28IB-F | 制造商:Exar Corporation 功能描述:T1/E1 LIU IC |
| XRT83VSH314 | 制造商:EXAR 制造商全稱:EXAR 功能描述:14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83VSH314ES | 功能描述:外圍驅(qū)動器與原件 - PCI 14 CHT1/E1LIUSH LOW COST VERSION RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
| XRT83VSH314IB | 功能描述:接口 - 專用 14 CH, SH T1/E1 1.8V DGTL/3.3V ANLG RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| XRT83VSH314IB-F | 功能描述:外圍驅(qū)動器與原件 - PCI 14 Channel Short-Haul RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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