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參數(shù)資料
| 型號： | LXT386BE |
| 英文描述： | PCM TRANSCEIVER|QUAD|CEPT PCM-30/E-1|CMOS|BGA|160PIN|PLASTIC |
| 中文描述： | 的PCM收發(fā)器|四|優(yōu)稅PCM-30/E-1 |的CMOS | BGA封裝| 160PIN |塑料 |
| 文件頁數(shù)： | 58/80頁 |
| 文件大?。?/td> | 1112K |
| 代理商： | LXT386BE |
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LXT384
—
Octal T1/E1/J1 Transceiver
58
Datasheet
Table 40. T1 Transmit Transmission Characteristics
Parameter
Sym
Min.
Typ
Max
Unit
Test Condition
Output pulse amplitude
–
2.4
3.0
3.6
V
Measured at the DSX
Peak voltage of a space
–
-0.15
–
+0.15
V
Driver output impedance
1
–
–
1
–
@ 772 KHz
Transmit amplitude variation with power
supply
–
-1
–
+1
%
Ratio of positive to negative pulse amplitude
–
0.95
–
1.05
–
T1.102, isolated pulse
Difference between pulse sequences
–
–
–
200
mV
For 17 consecutive
pulses, GR-499-CORE
Pulse width variation at half amplitude
–
–
–
20
ns
Jitter added by
Transmitter
1
10Hz - 8KHz
8KHz - 40KHz
10Hz - 40KHz
Wide Band
–
–
–
0.020
0.025
0.025
0.050
UI
pk-pk
AT&T Pub 62411
TCLK is jitter free
Output power
levels
@ 772 KHz
@ 1544 KHz
–
12.6
-29
–
17.9
dBm
dBm
T1.102 - 1993
Referenced to power at
772 KHz
Transmit Return
Loss
1
51kHz to 102 kHz
102 kHz to 2.048 MHz
2.048 MHz to 3.072 MHz
–
15
15
15
21
21
21
–
dB
dB
dB
With transmit series
resistors (TVCC=5V).
Using components in
the LXD384 evaluation
board.
Transmit path
delay
Bipolar mode
2
U.I.
JA Disabled
Unipolar mode
7
U.I.
1. Guaranteed by design and other correlation methods.
2. Power measured in a 3 KHz bandwidth at the point the signal arrives at the distribution frame for an all 1
’
s
pattern.
Table 41. T1 Receive Transmission Characteristics (Sheet 1 of 2)
Parameter
Sym
Min.
Typ
Max
Unit
Test Condition
Permissible cable attenuation
–
–
–
12
dB
@ 772 KHz
Receiver dynamic range
DR
0.5
–
–
Vp
Signal to noise interference margin
S/I
-16.5
–
–
dB
@ 655 ft. of 22 ABAM
cable
Data decision threshold
SRE
63
70
77
%
Rel. to peak input
voltage
Data slicer threshold
–
–
150
–
mV
Loss of signal threshold
–
–
200
–
mV
LOS hysteresis
–
–
50
–
mV
Consecutive zeros before loss of signal
–
100
175
250
–
T1.231 - 1993
LOS reset
–
12.5%
–
–
–
1
’
s density
1. Guaranteed by design and other correlation methods.
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