參數資料
型號: LXT381LE
廠商: INTEL CORP
元件分類: 數字傳輸電路
英文描述: Octal E1 Line Interface Unit
中文描述: DATACOM, PCM TRANSCEIVER, PQFP144
封裝: LQFP-144
文件頁數: 17/36頁
文件大?。?/td> 218K
代理商: LXT381LE
Octal E1 Line Interface
LXT381
Datasheet
17
Figure 5. External Transmit/Receive Line Circuitry
0.1
μ
F
3.3V
R
T
R
T
1:2
TTIP
TRING
T
T
RTIP
RRING
R
R
R
R
0.22
μ
F
1:1
2
Typical value. Adjust for actual board parasitics to obtain optimum return loss.
68
μ
F
1
1
Common decoupling capacitor for all TVCC and TGND pins.
TVCC
D1
D2
TVCC
D3
D4
560pF
2
1k
1k
Rx LINE
Tx LINE
VCC
GND
LXT381
(ONE CHANNEL)
0.1
μ
F
3.3V
3.3V
TVS1
3
3
3
Transformer turns ratio tolerance is ± 2%. See Test Specifications Section for transformer specifications.
COMPONENT
APPLICATION
75
COAX
120
TWISTED PAIR
R
T
R
R
11
±1%
11
±1%
37.5
±1%
60
±1%
D1 - D4
INTERNATIONAL RECTIFIER
11DQ04 or 10BQ060
MOTOROLA MBR0540T1
TVS1
SGS-THOMSON
SMLVT 3V3 3.3V
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