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: 20/80页
文件大小: 1017K
代理商: WJLXT388LEB2
Dual T1/E1/J1 Transceiver — Intel
LXT388
Datasheet
27
Figure 5. External Transmit/Receive Line Circuitry
0.1
μF
TVCC
R
T
R
T
1:2
TTIP
TRING
TV
C
TGN
D
RTIP
RRING
R
0.22
μF
1:2
68
μF
1
Common decoupling capacitor for all TVCC and TGND pins.
TVCC
D1
D2
TVCC
D3
D4
560pF
2
1k
Ω
1k
Ω
Rx LINE
Tx LINE
VCC
GND
LXT388
(ONE CHANNEL)
0.1
μF
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.
Component
E1
75
Ω Coax
E1
120
Ω Twisted Pair
T1
100
Ω Twisted Pair
TVCC = 5V
T1
100
Ω Twisted Pair
TVCC = 3.3V
RT
11
Ω ± 1%
11
Ω ± 1%
9.1
Ω ± 1%
0
Ω
RR
9.31
Ω ± 1%
15.0
Ω ± 1%
12.4
Ω ± 1%
12.4
Ω ± 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)
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