- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376463 > XRT83SL28 (Exar Corporation) 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT PDF資料下載
參數(shù)資料
| 型號： | XRT83SL28 |
| 廠商： | Exar Corporation |
| 英文描述： | 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT |
| 中文描述： | 8路E1短途線路接口單元 |
| 文件頁數(shù)： | 32/47頁 |
| 文件大?。?/td> | 377K |
| 代理商： | XRT83SL28 |
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頁當前第32頁第33頁第34頁第35頁第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
XRT83SL28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
xr
REV. 1.0.0
30
3.3
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.
Power Failure Protection
N
OTE
:
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
N
OTE
:
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.
F
IGURE
25. S
IMPLIFIED
B
LOCK
D
IAGRAM
OF
A
N
ON
-I
NTRUSIVE
M
ONITORING
A
PPLICATION
Line Card Transceiver
Non-Intrusive Receiver
Node
XRT83SL28
XRT83SL28
Data Traffic
相關PDF資料 |
PDF描述 |
|---|---|
| XRT83SL28IV | 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83SL30 | SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83SL30IV | SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83VSH28 | 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT |
| XRT83VSH28IB | 8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XRT83SL28ES | 功能描述:外圍驅(qū)動器與原件 - PCI 8 CH E1 LIU SH 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 |
| XRT83SL28IV | 功能描述:接口 - 專用 . . 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 |
| XRT83SL28IV-F | 功能描述:外圍驅(qū)動器與原件 - PCI 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 |
| XRT83SL30 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR |
| XRT83SL30ES | 功能描述:外圍驅(qū)動器與原件 - PCI 1 CHT1/E1 LIUSH 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。