XRT59L921 Datasheet, PDF (14/32 Pages) Exar Corporation – TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT

XRT59L921
TWENTY-ONE CHANNEL E1 LINE INTERFACE UNIT
RECEIVER ELECTRICAL CHARACTERISTICS
TA=-40 to 85°C, VDD=3.3V±5%, unless otherwise specified.
Parameter
MIN
Receiver Loss of Signal:
Threshold to Assert
-
TYP
MAX
20
-
Threshold to Clear
-
15
-
Time Delay
10
-
255
Hysteresis
-
5
-
Receiver Sensitivity
9
11
-
Interference Margin
Input Impedance
Jitter Tolerance:
20Hz
700Hz
10KHz —100KHz
Return Loss:
51KHz —102KHz
102KHz—2048KHz
2048KHz—3072KHz
-18
-14
-
5
-
-
10
5
-
-
0.3
14
-
-
20
-
-
16
-
-
REV. 1.2.1
UNIT
TEST CONDITIONS
dB Cable attenuation @ 1024KHz
dB
bit Per ITU-G.775
dB
dB Below nominal pulse amplitude of 3.0V for
120Ω and 2.37V for 75Ω applications.
dB
With 6dB cable loss.
KΩ
UIpp
UIpp
UIpp
dB
Per ITU-G.703
dB
dB
TRANSMITTER ELECTRICAL CHARACTERISTICS
TA=-40 to 85°C, VDD=3.3V±5%, unless otherwise specified
Parameter
MIN
TYP
MAX
AMI Output Pulse Amplitude:
75Ω Application
2.13
2.37
2.60
120Ω Application
2.70
3.0
3.30
Output Pulse Width
224
244
264
Output Pulse Width Ratio
0.95
−
1.05
Output Pulse Amplitude Ratio
0.95
−
1.05
Output Return Loss:
51KHz —102KHz
8
-
-
102KHz—2048KHz
8
-
-
2048KHz—3072KHz
8
-
-
UNIT
TEST CONDITIONS
V
Use transformer with 1:2 ratio
and 9.1Ω resistor in series with
V
each end of primary
ns
−
Per ITU-G.703
−
Per ITU-G.703
dB Per ETSI 300 166 and G.703
dB
dB
12