XRT7302IV View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT7302IV' PDF : 62 Pages View PDF
XRT7302 2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
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REV. 1.1.6
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
Receive Sensitivity (Length of cable)
900
feet
Signal Level to Declare Loss of Signal (LOSTHR = 0, REQ_IN =
1)
75
mV
Signal Level to Clear Loss of Signal (LOSTHR = 0, REQ_IN = 1) 270
Signal Level to Declare Loss of Signal
(LOSTHR = 1, REQ_IN = 1)
Signal Level to Clear Loss of Signal (LOSTHR = 1, REQ_IN = 1) 110
mV
25
mV
mV
Signal Level to Declare Loss of Signal (LOSTHR = 0, REQ_IN =
0)
55
mV
Signal Level to Clear Loss of Signal (LOSTHR = 0, REQ_IN = 0) 210
mV
Signal Level to Declare Loss of Signal (LOSTHR = 1, REQ_IN =
0)
90
mV
Signal Level to Clear Loss of Signal (LOSTHR = 1, REQ_IN = 0) 90
mV
Intrinsic Jitter (all “1’s” Pattern)(2)
0.03
UI
Intrinsic Jitter ( “100” Pattern)
0.03
UI
Jitter Tolerance @ Jitter Frequency = 100Hz
64
UI
Jitter Tolerance @ Jitter Frequency = 1kHz
64
UI
Jitter Tolerance @ Jitter Frequency = 10kHz
5
UI
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
SYMBOL
PARAMETER
TRANSMIT CHARACTERISTICS (SEE ƒIGURE 2)
Transmit Output Pulse Amplitude
(Measured at 0 feet, TxLEV=0, see Figure 1)
Transmit Output Pulse Amplitude
(Measured at 0 feet, TxLEV=1, see Figure 1)
MIN.
TYP.
MAX
UNITS
0.68
0.75
0.85
Vpk
0.9
1.0
1.1
Vpk
Transmit Output Pulse Width
10.10
11.18
12.28
ns
Transmit Output Pulse Amplitude Ratio
0.9
1.0
1.1
Transmit Output Jitter with jitter-free input @ TxClk(n)
Receive Line Characteristics (See ƒigure 3)
0.02
0.05
UI
18
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