Datasheet > LTC2877HMSE#PBF

LTC2877HMSE#PBF

更新时间： 2024-02-24 04:38:01

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
32页	1613K
描述
LTC2877 - ±60V Rugged PROFIBUS RS485 Transceivers; Package: MSOP; Pins: 10; Temperature Range: -40°C to 125°C

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LTC2877HMSE#PBF 技术参数

是否Rohs认证：	符合	生命周期：	Active
零件包装代码：	MSOP	针数：	10
Reach Compliance Code：	compliant	风险等级：	2.18
Base Number Matches：	1

LTC2877HMSE#PBF 数据手册

LTC2876/LTC2877

±±60V RuugeVꢀ ꢁOFIBUV

U485VTranscgivgrs

FeaTures

DescripTion

The LTC^®2876 and LTC2877 are PROFIBUS RS485

transceivers designed to meet the test specifications for

PROFIBUS-DP masters and PROFIBUS-DP slaves, fully

compatible with IEC 61158-2, type 3: medium attachment

unit (MAU). With operation up to 20Mbps, the LTC2876/

LTC2877supportsallPROFIBUSdataratesupto12Mbps.

PROFIBUS IEC 61158-2 Compliant

Protected from Overvoltage Line Faults to 6ꢀ0

52ꢁ0 ESꢂ Interface Pinsꢃ 15ꢁ0 All Otꢄer Pins

2ꢁ0 ꢅLevel ꢆ4 IEC61ꢀꢀꢀ-ꢆ-ꢆ Fast Transient Burst

250 ꢇorꢁing Common Mode Range

2ꢀMbps Maximum Baud Rate

1.650 to 5.50 Logic Supply Pin for Flexible ꢂigital

Interfacing ꢅLTC28774

5V Supply Can Operate Down to 3V for Low Power,

Low Swing Applications

Fully Balanced Differential Receiver Thresholds with

240mV Hysteresis for Superior Noise Tolerance and

Low Duty Cycle Distortion

Receiver Failsafe for Open, Shorted and Terminated

Conditions

TheLTC2876andLTC2877areexceptionallyrobust,toler-

ating 60V faults on the bus pins and protected to 52kV

ESD. These devices are suitable for harsh environments

or where 24V power might be inadvertently connected.

Extended 25V input common mode range and full fail-

safe operation improve data communication reliability in

noisy systems.

The LTC2876 and LTC2877 meet PROFIBUS and RS485

specifications with a supply voltage of 4.5V to 5.5V but

can operate down to 3V with reduced supply current.

Wide Operating Temperature Range: –40°C to 125°C

Available in Small DFN and MSOP Packages

Product Selection Guide

PART NUMBER

LTC2876

LOGIC SUPPLY PIN

PACKAGE

applicaTions

DFN-8, MSOP-8

DFN-10, MSOP-10

LTC2877

YES

PROFIBUS-DP

Industrial Communication Networks

RS485 and RS422 Systems

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

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

3V Low Voltage Differential Signaling

Typical applicaTion

Eye ꢂiagram of 12Mbps Signal at

1.8V

tꢄe Near and Far End of a 1ꢀꢀm

PROFIBUS Cable ꢂriven by tꢄe

LTC2877 Using 2⁸–1 PRBS Pattern

0.1µF

1µF

LTC2877

390Ω

220Ω

390Ω

PROFIBUS

CABLE

PB–PA

NEAR END

2V/DIV

B´

µC

220Ω

SENSOR

A´

= 150Ω

B´– A´

2V/DIV

FAR END

20ns/DIV

390Ω

GND

28767 TA01b

28767 TA01a

28767fa

For more information www.linear.com/LTC2876

12 3 4 5 6 7...32

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