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XRT7250 数据表(PDF) 39 Page - Exar Corporation

部件名 XRT7250
功能描述  DS3/E3 FRAMER IC
PDF  463 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  EXAR [Exar Corporation]
网页  http://www.exar.com
标志 EXAR - Exar Corporation

XRT7250 数据表(HTML) 39 Page - Exar Corporation

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XRT7250
DS3/E3 FRAMER IC
áç
áç
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REV. 1.1.1
20
AC ELECTRICAL CHARACTERISTICS (CONT.)
Test Conditions: TA = 25(C, VCC = 5.0V + 5% unless otherwise specified
SYMBOL
PARAMETER
MIN.TYP.MAX.UNITS
CONDITIONS
Transmit Overhead Input Interface Timing - Method 1 (Figure 5)
t21
"TxOHClk" to "TxOHFrame" output delay
930
110
28
955
125
31
ns
ns
ns
DS3 Applications
E3, ITU-T G.832
Applications
E3, ITU-T G.751
Applications
t22
"TxOHIns" set-up time, to falling edge of "TxOHClk"
100
50
15
ns
ns
ns
DS3 Applications
E3, ITU-T G.832
Applications
E3, ITU-T G.751
Applications
t23
"TxOHIns" hold time, from falling edge of "TxOHClk"
100
60
17
ns
ns
ns
DS3 Applications
E3, ITU-T G.832
Applications
E3, ITU-T G.751
Applications
t24
"TxOH" data set-up time, to falling edge of "TxO-
HClk"
100
50
15
ns
ns
ns
DS3 Applications
E3, ITU-T G.832
Applications
E3, ITU-T G.751
Applications
t25
"TxOH" data hold time, from falling edge of "TxO-
HClk"
100
60
17
ns
ns
ns
DS3 Applications
E3, ITU-T G.832
Applications
E3, ITU-T G.751
Applications
Transmit Overhead Data Input Interface - Method 2 (Figure 6)
t26
“TXOHIns” to “TxInClk” (falling edge) set-up Time
920
140
20
ns
ns
ns
DS3 Applications
E3, ITU-T G.832
Applications
E3, ITU-T G.751
Applications



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