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TP3404 Datasheet(PDF) 1 Page - Texas Instruments |
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TP3404 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 19 page NRND TP3404 www.ti.com SNOS703 – DECEMBER 2004 TP3404 Quad Digital Adapter for Subscriber Loops (QDASL) Check for Samples: TP3404 1 FEATURES DESCRIPTION The TP3404 is a combination 4-line transceiver for 23 • 4 COMPLETE ISDN PBX 2-WIRE DATA voice and data transmission on twisted pair TRANSCEIVERS INCLUDING: subscriber loops, typically in PBX line card • Quad 2 B Plus D Channel Interface for PBX applications. It is a companion device to the “U” Interface TP3401/2/3 DASL single-channel transceivers. In addition to 4 independent transceivers, a time-slot • 144 kb/s Full-Duplex on 1 Twisted Pair Using assignment circuit is included to support interfacing to Burst Mode Transmission Technique the system backplane. • Loop Range up to 6 kft (#24AWG) Each QDASL line operates as an ISDN “U” Interface • Alternate Mark Inversion Coding with Transmit for short loop applications, typically in a PBX Pulse Shaping DAC, Smoothing Filter, and environment, providing transmission for 2 B channels Scrambler for Low Emi Radiation and 1 D channel. • Adaptive Line Equalizer Full-duplex transmission at 144 kb/s is achieved on • On-Chip Timing Recovery, No External single twisted wire pairs using a burst-mode Components technique (Time Compression Multiplexed). All timing • Programmable Time-Slot Assignment TDM sequences necessary for loop activation and de- Interface for B Channels activation are generated on-chip. • Separate Interface for D Channel with Alternate Mark Inversion (AMI) line coding is used to Programmable Sub-Slot Assignment ensure low error rates in the presence of noise with lower emi radiation than other codes such as Biphase • 4.096 MHz Master Clock (Manchester). On #24 AWG cable the range is at • 4 Loop-Back Test Modes least 1.8 km (6k ft.). • MICROWIRE™ Compatible Serial Control Interface • 5V Operation • 28-Pin PLCC Package BLOCK DIAGRAM 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 MICROWIRE is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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