Datasheet > MAX14943

MAX14943

更新时间： 2024-09-29 14:58:23

品牌	Logo	应用领域
亚德诺 - ADI		变压器驱动驱动器
页数	文件大小	规格书
21页	726K
描述
5kVRMS隔离、20Mbps半双工PROFIBUS DP/RS-485收发器，±35kV ESD保护，集成了变压器驱动器

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中文翻译

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数据手册

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MAX14943 数据手册

EVALUATION KIT AVAILABLE

MAX14943

5kV

Isolated 20Mbps Half-Duplex PROFIBUS DP/

RMS

RS-485 Transceiver with ±35kV ESD Protection and

Integrated Transformer Driver

General Description

The MAX14943 isolated RS-485/PROFIBUS DP transceiver

Beneﬁts and Features

● High Integration Simplifies Designs

• Integrated LDO for Cable-Side Power

• Integrated Transformer Driver for Power Transfer

to Cable Side Has Up to 80% Efﬁciency at 150mA

Load

provides 5000V (60s) of galvanic isolation between

RMS

the cable side (RS-485 driver/receiver side) and the UART

side of the device. Isolation improves communication by

breaking ground loops and reduces noise when there are

large differences in ground potential between ports. This

device allows for robust communication up to 20Mbps.

● High-Performance Transceiver Enables Flexible

Designs

• Compliant with RS-485 and EIA 61158-2 Type 3

PROFIBUS DP Standards

• 20Mbps (max) Data Rate

The device includes an integrated 450kHz transformer

driver for power transfer to the cable side of the transceiver

using an external transformer. An integrated LDO provides

a simple and space-efficient architecture for providing

power to the cable side of the IC.

• Up to 128 Devices on the Bus

● Integrated Protection for Robust Communication

• ±35kV ESD (HBM) on Driver Outputs/Receiver

Inputs

The device includes one half-duplex driver/receiver channel.

The receiver is 1/4-unit load, allowing up to 128 transceivers

on a common bus.

• 5kV

Withstand Isolation Voltage for 60s (V

)

RMS

ISO

• 1200V

Maximum Repetitive Peak-Isolation

PEAK

Voltage (V

Integrated true fail-safe circuitry ensures a logic-high on

the receiver output when inputs are shorted or open.

Undervoltage lockout disables the driver when cable-side

or UART-side power supplies are below functional levels.

)

IORM

• 848V

Maximum Working-Isolation Voltage

RMS

)

IOWM

• > 30 Years Lifetime at Rated Working Voltage

• Withstands ±10kV Surge per IEC 61000-4-5

• Thermal Shutdown

The driver outputs/receiver inputs are protected from

±35kV electrostatic discharge (ESD) to GNDB on the

cable side, as specified by the Human Body Model (HBM).

The MAX14943 is available in a 16-pin wide-body SOIC

package and operates over the -40°C to +105°C temperature

range.

Functional Diagram

V_DDA

V_LDO

TD1 TD2

Applications

● Industrial Automation Equipment

● Programmable Logic Controllers

● HVAC

MAX14943

LDO

XFMR

DRIVER

V_DDB

● Power Meters

RXD

Safety Regulatory Approvals

● UL According to UL1577

TXD

● cUL According to CSA Bulletin 5A

DEM

GNDA

GNDB

The PROFIBUS logo is a registered trademark of PROFIBUS

and PROFINET International (PI).

Ordering Information appears at end of data sheet.

19-7653; Rev 2; 10/17

12 3 4 5 6 7...21

中文翻译

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与MAX14943相关器件

型号	品牌	获取价格	描述	数据表
MAX14943GWE+T	MAXIM	获取价格	Line Transceiver,
MAX14945	MAXIM	获取价格	2.75kVRMS Isolated 500kbps Half-Duplex RS-485
MAX14945	ADI	获取价格	2.75kVRMS隔离、500kbps全双工RS-485/RS-422收发器，具有±30k
MAX14945EWE+	MAXIM	获取价格	2.75kVRMS Isolated 500kbps Half-Duplex RS-485
MAX14945EWE+T	MAXIM	获取价格	2.75kVRMS Isolated 500kbps Half-Duplex RS-485
MAX14946	MAXIM	获取价格	Terminal Block Connectors for Easy RS-485/ PROFIBUS Evaluation
MAX14946	ADI	获取价格	2.75kVRMS隔离、500kbps半双工、RS-485/RS-422收发器，具有±30
MAX14948	MAXIM	获取价格	5kVRMS Isolated 500kbps Half-Duplex RS-485
MAX14948	ADI	获取价格	5kVRMS 隔离、500kbps全双工RS-485/RS-422收发器，具有±30kV
MAX14948EWE+	MAXIM	获取价格	Line Transceiver,

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