Datasheet > LTC2864

LTC2864

更新时间： 2024-01-20 05:29:19

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
24页	390K
描述
Complete Isolated RS485/RS422 μModule

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LTC2864 数据手册

LTM2881

Complete Isolated

RS485/RS422 µModule

Transceiver + Power

FEATURES

DESCRIPTION

UL Rated RS485/RS422 Transceiver: 2500V

The LTM^®2881 is a complete galvanically isolated full-

duplex RS485/RS422 μModule^®transceiver. No external

components are required. A single supply powers both

sides of the interface through an integrated, isolated, low

noise, efficient 5V output DC/DC converter.

RMS

UL Recognized

File #E151738

Isolated DC Power: 5V at Up to 200mA

No External Components Required

20Mbps or Low EMI 250kbps Data Rate

High ESD: 15kV HꢀM on Transceiver Interface

High Common Mode Transient Immunity: 30kV/μs

Integrated Selectable 120Ω Termination

3.3V ꢁLTM2881-3ꢂ or 5.0V ꢁLTM2881-5ꢂ Operation

1.62V to 5.5V Logic Supply Pin for Flexible Digital Interface

Common Mode Working Voltage: 560V

High Input Impedance Failsafe RS485 Receiver

Current Limited Drivers and Thermal Shutdown

Compatible with TIA/EIA-485-A and PROFIBUS

High Impedance Output During Internal Fault Condition

Low Current Shutdown Mode ꢁ< 10μAꢂ

General Purpose CMOS Isolated Channel

Small, Low Profile ꢁ15mm × 11.25mmꢂ

Coupled inductors and an isolation power transformer

provide2500V

ofisolationbetweenthelinetransceiver

RMS

and the logic interface. This device is ideal for systems

where the ground loop is broken allowing for large com-

mon mode voltage variation. Uninterrupted communica-

tion is guaranteed for common mode transients greater

than 30kV/ꢀs.

PEAK

Maximum data rates are 20Mbps or 250kbps in slew

limited mode. Transmit data, DI and receive data, RO, are

implemented with event driven low jitter processing. The

receiver has a one-eighth unit load supporting up to 256

nodes per bus. A logic supply pin allows easy interfacing

with different logic levels from 1.62V to 5.5V, independent

of the main supply.

Surface Mount BGA and LGA Packages

APPLICATIONS

Enhanced ESD protection allows this part to withstand up

to 15kVꢁhumanbodymodelꢂonthetransceiverinterface

pins to isolated supplies and 10kV through the isolation

barrier to logic supplies without latch-up or damage.

Isolated RS485/RS422 Interface

Industrial Networks

Breaking RS485 Ground Loops

L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of

Isolated PROFIBUS-DP Networks

Linear Technology Corporation. All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

Isolated Half-Duplex RS485 μModule Transceiver

LTM2881 Operating Through 35kV/μs CM Transients

3.3V ꢁLTM2881-3ꢂ

5V ꢁLTM2881-5ꢂ

MULTIPLE SWEEPS

OF COMMON MODE

TRANSIENTS

LTM2881

AVAILABLE CURRENT:

150mA ꢁLTM2881-5ꢂ

100mA ꢁLTM2881-3ꢂ

500V/DIV

CC2

PWR

TWISTED-PAIR

CABLE

1V/DIV

2881 TA01a

50ns/DIV

GND

GND2

2881 TA01

2881fe

12 3 4 5 6 7...24

中文翻译

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与LTC2864相关器件

型号	品牌	获取价格	描述	数据表
LTC2864_15	Linear	获取价格	60V Fault Protected 3V to 5.5V RS485/RS422 Transceivers
LTC2864HDD-1#PBF	Linear	获取价格	LTC2864 - ±60V Fault Protected 3V to 5.5V RS4
LTC2864IDD-1#PBF	Linear	获取价格	LTC2864 - ±60V Fault Protected 3V to 5.5V RS4
LTC2864IDD-2#PBF	Linear	获取价格	LTC2864 - ±60V Fault Protected 3V to 5.5V RS4
LTC2864IS-1#PBF	Linear	获取价格	LTC2864 - ±60V Fault Protected 3V to 5.5V RS4
LTC2864MPS-1#PBF	Linear	获取价格	LTC2864 - ±60V Fault Protected 3V to 5.5V RS4
LTC2865	Linear	获取价格	Complete Isolated RS485/RS422 μModule
LTC2865	ADI	获取价格	具 ±60V 故障保护功能的 3V 至 5.5V RS485 / RS422 收发器
LTC2865_15	Linear	获取价格	60V Fault Protected 3V to 5.5V RS485/RS422 Transceivers
LTC2865HMSE#PBF	Linear	获取价格	LTC2865 - ±60V Fault Protected 3V to 5.5V RS4

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