XRT73R12
34
REV. 1.0.3
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
NOTE: The above values are at TA = 250C and VDD = 3.3 V ± 5%.
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
Vpk
Transmit Output Pulse Amplitude
(measured with TxLEV = 1)
0.90
1.00
1.10
Vpk
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
0.02
0.05
UIpp
RECEIVER LINE SIDE INPUT CHARACTERISTICS
Receiver Sensitivity (length of cable)
900
1100
feet
Jitter Tolerance @ Jitter Frequency 400 KHz
0.15
UIpp
Signal Level to Declare Loss of Signal
Refer to
Table 3
Signal Level to Clear Loss of Signal
Refer to
Table 3
FIGURE 23. TRANSMIT OUPUT PULSE TEMPLATE FOR DS3 AS PER BELLCORE GR-499
D S3 Pulse T e m plate
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
-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
1
1.
1
1.
2
1.
3
1.
4
Tim e , in UI
N
o
rm
a
li
z
e
d
A
m
p
li
tu
d
e
Lower Curve
Upper Curve