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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)： | 29/80頁 |
| 文件大?。?/td> | 1112K |
| 代理商： | LXT386BE |
Octal T1/E1/J1 Transceiver
—
LXT384
Datasheet
29
Figure 6. External Transmit/Receive Line Circuitry
Component
75
Coax
120
Twisted Pair
100
Twisted Pair
TVCC = 5V
100
Twisted Pair
TVCC = 3.3V
R
T
11
± 1%
9.31
± 1%
11
± 1%
15.0
± 1%
9.1
± 1%
12.4
± 1%
0
R
R
12.4
± 1%
D1 - D4
International Rectifier.............11DQ04 or 10BQ060
Motorola.......................................MBR0540T1
TVS1
SGS-Thomson..............SMLVT 3V3 3.3V Transient Voltage Suppressor (TVCC=3.3V)
Semtech.......................SMCJ5.0AC 5.0V Transient Voltage Suppressor (TVCC=5.0V)
0.1
μ
F
TVCC
TTIP
TRING
T
T
RTIP
RRING
R
R
R
R
0.22
μ
F
1:2
68
μ
F
1
1
Common decoupling capacitor for all TVCC and TGND pins.
TVCC
D1
D2
TVCC
D3
D4
1k
1k
Rx LINE
VCC
GND
LXT384
(ONE CHANNEL)
0.1
μ
F
3.3V
3
Refer to Transformer Specifications Table for transformer specifications.
TVCC
TVS1
2
Typical value. Adjust for actual board parasitics to obtain optimum return loss.
4
DC blocking capacitor needed when pulse shaping is disabled. See pin
description for TCLK7, pin 2 of QFP package in Table 1.
R
T
R
T
1:2
560pF
2
Tx LINE
3
4
0.47
μ
F
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