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參數(shù)資料
| 型號： | T7296 |
| 廠商： | Lineage Power |
| 英文描述： | Integrated Line Transmitter(集成PCM線傳送器) |
| 中文描述： | 綜合線變送器（集成的PCM線傳送器） |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 396K |
| 代理商： | T7296 |
Data Sheet
February 2000
T7296 DS3/STS-1/E3
Integrated Line Transmitter
Features
I
Fully integrated transmit interface for DS3, STS-1,
or E3 applications
I
Integrated pulse shaping circuit
I
Intended for systems which must comply with
AT&T CB119, ITU-T G.703, and ITU-T G.824,
Bellcore TR-NWT-000499, ANSI T1.404
I
Built-in B3ZS/HDB3 encoder and decoder
I
Remote and local loopback functions
I
Single 5 V power supply
Applications
I
Interface for SONET, DS3, and E3 network
equipment
I
Digital cross connect systems
I
CSU/DSU equipment
I
PCM test equipment
I
Fiber-optic terminals
I
Multiplexers
Description
The T7296 is a fully integrated PCM line-driver IC
intended for DS3 (44.736 Mbits/s), SONET STS-1
(51.84 Mbits/s), or E3 (34.368 Mbits/s) applications.
The IC is designed to complement the T7295-6 DS3/
SONET STS-1 or T7295-1 E3 Integrated Line
Receivers. The T7296 converts input clock and dual-
rail unipolar data into AMI pulses according to AT&T
Technical Advisory No. 34 or ITU-T G.703 recom-
mendations.
The device provides B3ZS (DS3) or HDB3 (E3)
encoding functions for data to be transmitted to the
line. A complementary decoder circuit is also
included in the T7296 for decoding received signals
from an external line receiver. Both encoder and
decoder functions can be disabled independently
with external control pins. In the receive direction,
coding errors and bipolar violations are detected and
flagged at an output pin.
On-chip pulse shaper circuitry eliminates the need
for external components for line equalization to meet
the cross connect template (DSX-3 and STSX-1). For
system-level trouble shooting and testing, both trans-
mit and receive loopbacks are possible with the built-
in loopback circuit.
The T7296 is manufactured in a BiCMOS technology
and is packaged in 28-pin, plastic DIP and SOJ pack-
ages. The device requires a single 5 V power supply
and dissipates a maximum power of 700 mW.
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