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    | Partname: | TP3404 |  | Description: | Quad Digital Adapter for Subscriber Loops (QDASL) |  | Manufacturer: | National Semiconductor |  | Datasheet: | PDF (212K). Click here to download *)
 |  | 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 |  |  Click here to download TP3404 Datasheet*)
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