Datasheet > LTC2879X

LTC2879X

更新时间： 2023-12-20 18:45:02

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
18页	1500K
描述
工作温度高达 175°C 的 ±60V 容错 RS485/RS422 收发器

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中文翻译

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数据手册

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LTC2879X 数据手册

LTC2879X

±±60V FaulVꢀouerFnlV

VRS485/RS422VꢀrFnsceiverV

wilhVOperFlionVloV175°C

DESCRIPTION

The LTC^®2879X is a rugged RS485/RS422 transceiver

designed to operate over a wide temperature range of

–55°C to 175°C. Special processing steps are used to

prevent intermetallic growth that can cause metal voids

on standard parts operating at high temperatures. Low-

drift, low-leakage circuitry and lack of a thermal shutdown

circuit allow the LTC2879X to meet critical specifications,

tested 100% at 175°C.

FEATURES

Guaranteed Operation from –55°C to 175°C

Fully Tested at 175°C

Protected from Overvoltage Line Faults to ±±60

±5ꢀ20 ꢁES ꢂnterface Pinsꢃ ±1520 Vll Otꢄer Pins

Level 4 ꢂꢁC±1666-4-4 ꢁlectrical Fast Transient

±ꢀ50 ꢅor2ing Common Mode Range

ꢀ6Mbps Maximum Baud Rate

Operates witꢄ 0 from 30 to 5.50

PROFIBUS IEC 61158-2 Compliant (V ≥ 4.5V)

The LTC2879X also meets the specifications for

PROFIBUS-DP (IEC 61158-2) supporting all data rates

from 9.6kbps to 12Mbps.

Fully Balanced Differential Receiver Thresholds with

240mV Hysteresis for Superior Noise Tolerance and

Low Duty Cycle Distortion

The LTC2879X is exceptionally robust, tolerating 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 operating range and full failsafe

operation improve data communication reliability in noisy

systems.

Receiver Failsafe for Open, Shorted and Terminated

Conditions

Available in a Tiny 3mm × 3mm MSOP Package

APPLICATIONS

Oil and Gas Exploration

High Temperature Industrial Control

The LTC2879X meets RS485, RS422, and PROFIBUS-DP

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

full RS485/RS422 compatibility down to 3V.

PROFIBUS-DP

Military Systems

Harsh Environments

All registered trademarks and trademarks are the property of their respective owners.

TYPICAL APPLICATION

175°Cꢃ ꢀ6Mbpsꢃ 0_CC= 50

ꢀꢁ ꢂꢃ ꢄꢅꢄꢁ

ꢀꢁ

ꢀꢁꢂꢃꢄꢁ

0ꢀꢁꢂꢃ

ꢀ

ꢁꢁ

ꢀꢁꢂꢃꢄꢅꢆꢇ

ꢀ ꢀꢁꢂ ꢃ

ꢀꢁꢂꢃꢄꢁ

Rꢀꢁꢂꢃ

ꢄꢅꢆꢇꢈ

Rꢀ

ꢀ

ꢀꢁꢂ

ꢀꢁꢂꢃꢄꢁ

ꢀꢁ

120Ω

ꢀꢁꢂꢀꢃR

ꢀꢁ

Rꢀ

ꢀꢁꢂꢃꢄꢁ

ꢀ

= 120Ω

ꢀꢁꢂꢃꢄ ꢅꢆ0ꢇꢈ

ꢀꢁ

ꢀ0ꢁꢂꢃꢄꢅꢆ

= 100pF (FIGURE 5)

ꢀꢁꢂ

ꢀꢁꢂꢃꢄ ꢅꢆ0ꢇꢈ

= 54Ω

Rev 0

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