TP3404 Quad Digital Adapter

National Semiconductor

Description

TP3404 Quad Digital Adapter for Subscriber Loops (QDASL) PRELIMINARY July 1994 TP3404 Quad Digital Adapter for Subscriber Loops (QDASL) General Desc.
The TP3404 is a combination 4-line transceiver for voice and data transmission on twisted pair subscriber loops typically in PBX line card application.

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Datasheet Specifications

Part number: TP3404
Manufacturer: National Semiconductor
File Size: 212.66 KB
Datasheet: TP3404_NationalSemiconductor.pdf
Description: Quad Digital Adapter

Features

* 4 COMPLETE ISDN PBX 2-WIRE DATA TRANSCEIVERS INCLUDING Y Quad 2 B plus D channel interface for PBX ‘‘U’’ interface Y 144 kb s full-duplex on 1 twisted pair using Burst Mode Transmission Technique Y Loop range up to 6 kft ( 24AWG) Y Alternate Mark Inversion coding with transmit Pulse Shaping DAC Smoo

Applications

* It is a companion device to the TP3401 2 3 DASL single-channel transceivers In addition to 4 independent transceivers a time-slot assignment circuit is included to support interfacing to the system backplane Each QDASL line operates as an ISDN ‘‘U’’ Interface for short loop applications typically in

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TP3404 Quad Digital Adapter National Semiconductor

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