參數(shù)資料
型號: LXT388LE
英文描述: PCM TRANSCEIVER|DUAL|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC
中文描述: 的PCM收發(fā)器|雙|優(yōu)稅PCM-30/E-1 |的CMOS | QFP封裝| 100引腳|塑料
文件頁數(shù): 56/80頁
文件大?。?/td> 1112K
代理商: LXT388LE
LXT384
Octal T1/E1/J1 Transceiver
56
Datasheet
MODE,
LOOP0-7
and
JASEL
Low level input
voltage
Vinl
1/3VCC-0.2
V
The VCC supply
refers to VCC0 or
VCC1 only.
Midrange level input
voltage
Vinm
1/3VCC+0.2
1/2VCC
2/3VCC-0.2
V
High level input
voltage
Vinh
2/3VCC+0.2
V
Low level input
current
Iinl
50
μA
High level input
current
Iinh
50
μA
Input leakage current
Iil
-10
+10
μA
Tri state leakage current
Ihz
-10
+10
μA
Tri state output current
Ihz
1
μA
TTIP, TRING
Line short circuit current
50
mA
RMS
2 x 11
series
resistors and 1:2
transformer
Input leakage
TMS
TDI
TRST
50
μA
Table 38. E1 Transmit Transmission Characteristics (Sheet 1 of 2)
Parameter
Sym
Min.
Typ
Max
Unit
Test Condition
Output pulse
amplitude
75
120
2.14
2.7
2.37
3.0
2.60
3.3
V
V
Tested at the line side
Peak voltage of a
space
75
120
-0.237
-0.3
0.237
0.3
V
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
characteristic impedance
1:2
Rt = 11
± 1%
Transmit return
loss 75
coaxial
cable
1
51kHz to 102 kHz
102 kHz to 2.048 MHz
2.048 MHz to 3.072 MHz
15
15
15
17
17
17
dB
dB
dB
Using components in
the LXD384
evaluation board.
Transmit return
loss 120
twisted
pair cable
1
51kHz to 102 kHz
102 kHz to 2.048 MHz
2.048 MHz to 3.072 MHz
15
15
15
20
20
20
dB
dB
dB
Using components in
the LXD384
evaluation board
1. Guaranteed by design and other correlation methods.
Table 37. DC Characteristics (Sheet 2 of 2)
Parameter
Sym
Min.
Typ
Max
Unit
Test Condition
1. Output drivers will output CMOS logic levels into CMOS loads.
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