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TP3404 - Quad Digital Adapter

General Description

The TP3404 is a combination 4-line transceiver for voice and data transmission on twisted pair subscriber loops typically in PBX line card 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

Key Features

  • 4.

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Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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TP3404 Quad Digital Adapter for Subscriber Loops (QDASL) PRELIMINARY July 1994 TP3404 Quad Digital Adapter for Subscriber Loops (QDASL) General Description The TP3404 is a combination 4-line transceiver for voice and data transmission on twisted pair subscriber loops typically in PBX line card 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 a PBX environment providing transmission for 2 B channels and 1 D channel Full-duplex transmission at 144 kb s is achieved on single twisted wire pairs using a burst-mode technique (Time Co