XRT7302IQ80 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT7302IQ80' PDF : 77 Pages View PDF
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2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
XRT7302
REV. 1.1.0
ELECTRICAL CHARACTERISTICS (CONTINUED), (TA = 250C, VDD = 5V + 5%, UNLESS OTHERWISE SPECIFIED)
LINE SIDE PARAMETERS SONET STS-1 APPLICATION
TRANSMIT CHARACTERISTICS (SEE FIGURE 2)
SYMBOL
PARAMETER
MIN.
TYP.
MAX
UNITS
Jitter Tolerance @ Jitter Frequency = 800kHz
0.4
UI
(1) Measured with Equalizer enabled, 12db Cable
attenuation, VDD = 5V and TA = 25°C
(2) Measured at nominal STSX-1 level with equalizer
enabled, VDD = 5V and TA = 25°C
ELECTRICAL CHARACTERISTICS (CONTINUED), (TA = 250C, VDD = 5V + 5%, UNLESS OTHERWISE SPECIFIED)
LINE SIDE PARAMETERS DS3 APPLICATION
Transmit Characteristics (see Figure 2)
SYMBOL
PARAMETER
Transmit Output Pulse Amplitude
(Measured a 0 feet, TxLEV=0, see Figure 1)
Transmit Output Pulse Amplitude
(Measured a 0 feet, TxLEV=1, see Figure 1)
Transmit Output Pulse Width
Transmit Output Pulse Amplitude Ratio
Transmit Output Jitter with jitter-free input @ TxClk(n)
MIN.
0.68
0.9
TYP.
0.75
1.0
MAX
0.85
1.1
UNITS
Vpk
Vpk
10.10
11.18
12.28
ns
0.9
1.0
1.1
0.02
0.05
UI
Receive Line Characteristics (See Figure 3)
Receive Sensitivity (Length of Table)
900
feet
Receive Intrinsic Jitter (All One’s Pattern)
0.01
UI
Receive Intrinsic Jitter (Using PRBS 223-1 Pattern)
0.02
UI
Signal Level to Declare Loss of Signal (LOSTHR = 0, REQ_IN =
1)
55
mV
Signal Level to Clear Loss of Signal (LOSTHR = 0, REQ_IN = 1) 220
Signal Level to Declare Loss of Signal
(LOSTHR = 1, REQ_IN = 1)
Signal Level to Clear Loss of Signal (LOSTHR = 1, REQ_IN = 1) 90
mV
22
mV
mV
Signal Level to Declare Loss of Signal (LOSTHR = 0, REQ_IN =
0)
35
mV
Signal Level to Clear Loss of Signal (LOSTHR = 0, REQ_IN = 0) 155
mV
Signal Level to Declare Loss of Signal (LOSTHR = 1, REQ_IN =
0)
17
mV
Signal Level to Clear Loss of Signal (LOSTHR = 1, REQ_IN = 0) 70
mV
Intrinsic Jitter (all “Ones” Pattern)
0.01
UI
Intrinsic Jitter (all “100” Pattern)(1)
UI
21
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