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參數(shù)資料
| 型號(hào)： | T7288 |
| 廠商： | Lineage Power |
| 英文描述： | CEPT/E1 Line Interface(CEPT/E1 線接口) |
| 中文描述： | CEPT/E1線路接口（CEPT/E1線接口） |
| 文件頁數(shù)： | 4/22頁 |
| 文件大?。?/td> | 432K |
| 代理商： | T7288 |
Data Sheet
January 1998
T7288 CEPT/E1 Line Interface
4
Lucent Technologies Inc.
Overview
The T7288 device is a fully integrated line interface that requires only two transformers, three input termination
resistors, and two output impedance-matching resistors to provide a bidirectional line interface between a
2.048 Mbits/s CEPT/E1 data link and terminal equipment. Typical application diagrams are shown in Figure 3 and
Figure 4 for 75
coaxial cable and 120
shielded twisted-pair operation, respectively.
The circuit is divided into three main blocks: transmit converter, receive converter, and logic. The transmit and
receive converters process information signals through the device in the transmit and receive directions, respec-
tively; the logic is the control and status interface for the device. Figure 3 and Figure 4 include a matched-imped-
ance transmit-interface section in order to match the output impedance of the transmitter to the line. See Table 2 for
the G.703/CH-PTT specifications for transmit-interface return loss.
Note: Lucent 2741 family pulse transformers are recommended.
Figure 3. Typical Application Diagram for Coaxial Environment
5-4345(C)r.2
GND
D
GND
A
+5 V
1 μF
RDATA/RPDATA
VIO/RNDATA
RCLK
V
DDD
V
DDA
TDATA/TPDATA
HDB3/TNDATA
TCLK
T1
R1
T2
R2
270
270
200
TRANSMITTED
DATA
1.36:1
LOAD
75
15.4
15.4
RECEIVE
INPUT
TRANSMIT
OUTPUT
T7288
CEPT/E1
LINE
INTERFACE
ZS
MATCHED-IMPEDANCE
TRANSMIT INTERFACE
1:2
RECEIVED
DATA
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T7289 | 制造商:TE Connectivity 功能描述: |
| T7289A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DS1 LINE INTERFACE |
| T7289A-EL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DS1 LINE INTERFACE |
| T7289A-EL4 | 制造商:Legerity 功能描述:IC,PCM TRANSCEIVER,SINGLE,T-1(DS1),CMOS,SOJ,28PIN,PLASTIC |
| T7289A-PL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DS1 LINE INTERFACE |
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