参数资料
型号: WJLXT388LEB2
厂商: CORTINA SYSTEMS INC
元件分类: 数字传输电路
英文描述: DATACOM, PCM TRANSCEIVER, PQFP100
封装: 14 X 14MM, ROHS COMPLIANT, LQFP-100
文件页数: 52/80页
文件大小: 1017K
代理商: WJLXT388LEB2
Intel
LXT388 — Dual T1/E1/J1 Transceiver
56
Datasheet
Tri state output current
Ihz
1
A
TTIP, TRING
Line short circuit current
50
mA
RMS
2 x 11
Ω series
resistors and 1:2
transformer
Input Leakage (TMS, TDI, TRST)–
50
A
Table 42. E1 Transmit Transmission Characteristics
Parameter
Sym
Min
Typ
Max
Unit
Test Condition
Output pulse
amplitude
75
Ω
120
Ω
2.14
2.7
2.37
3.0
2.60
3.3
V
Tested at the line side
Peak voltage of a
space
75
Ω
120
Ω
-0.237
-0.3
0.237
0.3
V
Transmit amplitude variation with supply
-1
+1
%
Difference between pulse sequences
200
mV
For 17 consecutive pulses
Pulse width ratio of the positive and negative
pulses
0.95
1.05
At the nominal half
amplitude
Transmit transformer turns ratio for
75/120
Ω characteristic impedance
1:2
Rt = 11
Ω ± 1%
Note: Transmit
return loss
75
Ω coaxial
cable1
Note: 51kHz to 102 kHz
Note: 102 kHz to 2.048
MHz
Note: 2.048 MHz to 3.072
MHz
15
17
dB
Using components in the
LXD384 evaluation board.
Transmit return
loss 120
Ω twisted
pair cable1
51kHz to 102 kHz
102 kHz to 2.048 MHz
2.048 MHz to 3.072 MHz
15
20
dB
Using components in the
LXD384 evaluation board.
Transmit intrinsic jitter; 20Hz to 100kHz
0.030
0.050
U.I.
Tx path TCLK is jitter free
Transmit path delay
Bipolar mode
2
U.I.
JA Disabled
Unipolar mode
7
U.I.
1. Guaranteed by design and other correlation methods.
Table 43. E1 Receive Transmission Characteristics
Parameter
Sym
Min
Typ
Max
Unit
Test Condition
Permissible cable attenuation
12
dB
@1024 kHz
Receiver dynamic range
DR
0.5
Vp
Signal to noise interference margin
S
-15
dB
Per G.703, O.151 @ 6 dB
cable Attenuation
Data decision threshold
SRE
43
50
57
%
Rel. to peak input voltage
Data slicer threshold
150
mV
1. Guaranteed by design and other correlation methods.
Table 41. DC Characteristics (Continued)
Parameter
Sym
Min
Typ
Max
Unit
Test Condition
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