参数资料
| 型号： | XRT83SL28IV-F |
| 厂商： | Exar Corporation |
| 文件页数： | 26/47页 |
| 文件大小： | 0K |
| 描述： | IC LIU SH E1 8CH 144TQFP |
| 标准包装： | 60 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 8/8 |
| 规程： | T1，E1，J1 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 144-LQFP |
| 供应商设备封装： | 144-TQFP（20x20） |
| 包装： | 托盘 |
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XRT83SL28
xr
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
30
3.3
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 XRT83SL28 is
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.
3.4
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
NOTE:
For a reference design and performance, see the TAN-54 application note for more details.
3.5
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 XRT83SL28’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 25. SIMPLIFIED BLOCK DIAGRAM OF A NON-INTRUSIVE MONITORING APPLICATION
Line Card Transceiver
Non-Intrusive Receiver
Node
XRT83SL28
Data Traffic
相关PDF资料 |
PDF描述 |
|---|---|
| XRT83SL30IV-F | IC LIU T1/E1/J1 SGL 64TQFP |
| XRT83SL314IB-L | IC LIU SH T1/E1/J1 14CH 304TBGA |
| XRT83SL34IV-F | IC LIU T1/E1/J1 QUAD 128TQFP |
| XRT83SL38IB-F | IC LIU SH T1/E1/J1 OCTAL 225BGA |
| XRT83VL38IB-F | IC LIU SH T1/E1/J1 OCTAL 225BGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| XRT83SL30 | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83SL30ES | 功能描述:外围驱动器与原件 - PCI 1 CHT1/E1 LIUSH RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| XRT83SL30IV | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83SL30IV-F | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| XRT83SL30IVTR-F | 功能描述:外围驱动器与原件 - PCI RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
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