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XRT75VL00D датащи(PDF) 23 Page - Exar Corporation

номер детали XRT75VL00D
подробное описание детали  E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
PDF  92 Pages
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производитель  EXAR [Exar Corporation]
домашняя страница  http://www.exar.com
Logo EXAR - Exar Corporation

XRT75VL00D датащи(HTML) 23 Page - Exar Corporation

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XRT75VL00D
REV. 1.0.3
E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
18
3.0
LINE SIDE CHARACTERISTICS:
3.1
E3 line side parameters:
The XRT75VL00D meets the pulse shape specified in ITU-T G.703 for 34.368 Mbits/s operation at the
secondary of the transformer. The pulse mask as specified in ITU-T G.703 for 34.368 Mbits/s is shown in
Figure 7.
FIGURE 7. PULSE MASK FOR E3 (34.368 MBITS/S) INTERFACE AS PER ITU-T G.703
TABLE 3: E3 TRANSMITTER AND RECEIVER LINE SIDE SPECIFICATIONS (TA = 250C AND VDD = 3.3 V ± 5%)
PARAMETER
MIN
TYP
MAX
UNITS
TRANSMITTER LINE SIDE OUTPUT CHARACTERISTICS
Transmit Output Pulse Amplitude
(Measured at secondary of the transformer)
0.90
1.00
1.10
Vpk
Transmit Output Pulse Amplitude Ratio
0.95
1.00
1.05
Transmit Output Pulse Width
12.5
14.55
16.5
ns
Intrinsic Jitter
0.02
0.05
UIPP
RECEIVER LINE SIDE INPUT CHARACTERISTICS
Receiver Sensitivity (length of cable)
1200
feet
Interference Margin
-20
-15
dB
Jitter Tolerance @ Jitter Frequency 800KHz
0.15
0.28
UIPP
Signal level to Declare Loss of Signal
-35
dB
Signal Level to Clear Loss of Signal
-15
dB
Occurence of LOS to LOS Declaration Time
10
255
UI
Termination of LOS to LOS Clearance Time
10
255
UI
0%
50%
V = 100%
14.55ns
Nominal Pulse
12.1ns
(14.55 - 2.45)
17 ns
(14.55 + 2.45)
8.65 ns
10%
10%
20%



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