XRT73R12_07 Datasheet, PDF (37/89 Pages) Exar Corporation – TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT

REV. 1.0.2
XRT73R12
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
TABLE 7: STS-1 TRANSMITTER LINE SIDE OUTPUT AND RECEIVER LINE SIDE INPUT SPECIFICATIONS (GR-253)
PARAMETER
MIN
TYP
MAX
UNITS
TRANSMITTER LINE SIDE OUTPUT CHARACTERISTICS
Transmit Output Pulse Amplitude
(measured with TxLEV = 0)
0.65
0.75
0.90
V_pk
Transmit Output Pulse Amplitude
(measured with TxLEV = 1)
0.90
1.00
1.10
V_pk
Transmit Output Pulse Width
8.6
9.65
10.6
ns
Transmit Output Pulse Amplitude Ratio
0.90
1.00
1.10
Transmit Intrinsic Jitter
RECEIVER LINE SIDE INPUT CHARACTERISTICS
0.02
0.05
UI_pp
Receiver Sensitivity (length of cable)
900
1100
feet
Jitter Tolerance @ Jitter Frequency 400 KHz
Signal Level to Declare Loss of Signal
0.15
UI_pp
Refer to Table 3
Signal Level to Clear Loss of Signal
Refer to Table 3
NOTE: The above values are at TA = 25⁰C and V_DD = 3.3 V ± 5%.
FIGURE 23. TRANSMIT OUPUT PULSE TEMPLATE FOR DS3 AS PER BELLCORE GR-499
DS3 Pulse T emplate
1.2
1
0.8
0.6
Lower Curve
Upper Curve
0.4
0.2
0
-0.2
-1 _{-0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1}
0 _{0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9}
Tim e, in UI
1 _{1.1 1.2 1.3 1.4}
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