Datasheet > TP3401

TP3401

更新时间： 2024-11-22 22:42:03

品牌	Logo	应用领域
美国国家半导体 - NSC		晶体晶体管放大器
页数	文件大小	规格书
16页	250K
描述
DASL Digital Adapter for Subscriber Loops

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中文翻译

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数据手册

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TP3401 数据手册

December 1991

TP3401, TP3402, TP3403

DASL Digital Adapter for Subscriber Loops

General Description

The TP3401, TP3402 and TP3403 are complete monolithic

transceivers for data transmission on twisted pair subscriber

loops. They are built on National’s double poly microCMOS

Features

Complete ISDN PBX 2-Wire Data Transceiver including:

2 B plus D channel interface for PBX U Interface

144 kb/s full-duplex on 1 twisted pair using Burst Mode

process, and require only a single 5 Volt supply. Alternate

Loop range up to 6 kft ( 24AWG)

Mark Inversion (AMI) line coding, in which binary ‘1’s are

alternately transmitted as a positive pulse then a negative

pulse, is used to ensure low error rates in the presence of

noise with lower emi radiation than other codes such as Bi-

phase (Manchester).

Alternate Mark Inversion coding with transmit filter and

scrambler for low emi radiation

Adaptive line equalizer

On-chip timing recovery, no external components

Standard TDM interface for B channels

Separate interface for D channel

2.048 MHz master clock

Full-duplex transmission at 144 kb/s is achieved on a single

twisted wire pair using a burst-mode technique (Time Com-

pression Multiplexed). Thus the device operates as an ISDN

‘U’ Interface for short loop applications, typically in a PBX

environment, providing transmission for 2 B channels and 1

Driver for line transformer

4 loop-back test modes

D channel. On 24 cable, the range is at least 1.8 km

(6k ft).

Single 5V supply

MICROWIRE^TMcompatible serial control interface

System timing is based on a Master/Slave configuration,

with the line card end being the Master which controls loop

timing and synchronisation. All timing sequences necessary

for loop activation and de-activation are generated on-chip.

Applications in:

PBX Line Cards

Terminals

Regenerators

Selection of Master and Slave mode operation is pro-

grammed via the Microwire Control Interface.

Available in both 20-pin DIP and 28-pin PLCC

A 2.048 MHz clock, which may be synchronized to the sys-

tem clock, controls all transmission-related timing functions.

For the TP3401, this clock must be provided from an exter-

nal source; the TP3402 includes an oscillator circuit requir-

ing an external crystal. The TP3403 includes the functions

of both the TP3401 and the TP3402.

Block Diagram

TL/H/9264–1

Note 1: TP3401 only.

TRI-STATEÉ is a registered trademark of National Semiconductor Corporation

MICROWIRE^TMis a trademark of National Semiconductor Corporation.

1995 National Semiconductor Corporation

TL/H/9264

RRD-B30M115/Printed in U. S. A.

12 3 4 5 6 7...16

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与TP3401相关器件

型号	品牌	获取价格	描述	数据表
TP3401S	ETC	获取价格	TRANSISTOR \| BJT \| NPN \| 200MA I(C) \| FO-58VAR
TP3402	NSC	获取价格	DASL Digital Adapter for Subscriber Loops
TP3402J	ETC	获取价格	ISDN Line Interface
TP3403	NSC	获取价格	DASL Digital Adapter for Subscriber Loops
TP3403V	ETC	获取价格	ISDN Line Interface
TP3404	NSC	获取价格	Quad Digital Adapter for Subscriber Loops (QDASL)
TP3404V	NSC	获取价格	Quad Digital Adapter for Subscriber Loops (QDASL)
TP3404V/NOPB	NSC	获取价格	IC DATACOM, TIME SLOT ASSIGNER, PQCC28, PLASTIC, LCC-28, Digital Transmission Controller
TP3404VX	NSC	获取价格	IC DATACOM, TIME SLOT ASSIGNER, PQCC28, PLASTIC, LCC-28, Digital Transmission Controller
TP3406	NSC	获取价格	DASL Digital Adapter for Subscriber Loops

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