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XRT75R03D Datasheet(PDF) 38 Page - Exar Corporation

Part # XRT75R03D
Description  THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
PDF  134 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT75R03D Datasheet(HTML) 38 Page - Exar Corporation

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XRT75R03D
REV. 1.0.2
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
33
FIGURE 6. RECEIVER DATA OUTPUT AND CODE VIOLATION TIMING
SYMBOL
PARAMETER
MIN
TYP
MAX
UNITS
RxClk
Duty Cycle
E3
DS3
STS-1
45
50
34.368
44.736
51.84
55
%
MHz
MHz
MHz
tRRX
RxClk rise time (10% o 90%)
2
4
ns
tFRX
RxClk falling time (10% to 90%)
2
4
ns
tCO
RxClk to RPOS/RNEG delay time
4
ns
tLCVO
RxClk to rising edge of LCV output delay
2.5
ns
FIGURE 7. TRANSMIT PULSE AMPLITUDE TEST CIRCUIT FOR E3, DS3 AND STS-1 RATES
RClk
t
RRX
t
FRX
RPOS or
RNEG
LCV
t
LCVO
t
CO
TTIP(n)
TRing(n)
XRT75R03D (0nly one channel shown)
1:1
R3
75
Ω
TxPOS(n)
TxNEG(n)
TxLineClk(n)
TPData(n)
TNData(n)
TxClk(n)
31.6
Ω + 1%
31.6
Ω +1%
R1
R2



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