Texas Instruments TP3404
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. 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.| Part No. | TP3404 |
|---|---|
| Datasheet | TP3404 Download |
| Manufacturer |  Texas Instruments |
| Description | Quad Digital Adapter |
| Buy | Stock & Price |
FEATURES
1●23 4 COMPLETE ISDN PBX 2-WIRE DATA TRANSCEIVERS INCLUDING:
● Quad 2 B Plus D Channel Interface for PBX “U” Interface
● 144 kb/s Full-Duplex on 1 Twisted Pair Using Burst Mode Transmission Technique
● Loop Range up to 6 kft (#24AWG)
● Alternate Mark Inversion Coding with Transmit Pulse Shaping DAC, Smoothing Filter, and Scrambler for Low Emi Radiation
● Adaptive Line Equalizer
● On-Chip Timing Recovery, No External Components
● Programmable Time-Slot Assignment TDM Interface for B Channels
● Separate Interface for D Channel with Programmable Sub-Slot Assignment
● 4.096 MHz Master Clock
● 4 Loop-Back Test Modes
● MICROWIRE™ Compatible Serial Control Interface
● 5V Operation
● 28-Pin PLCC Package
DESCRIPTION
In addition to 4 independent transceivers, a time-slot assignment circuit is included to support interfacing to the system backplane. Full-duplex transmission at 144 kb/s is achieved on single twisted wire pairs using a burst-mode technique (Time Compression Multiplexed). All timing sequences necessary for loop activation and deactivation are generated on-chip.
