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750315230

更新时间： 2024-11-22 01:00:47

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美信 - MAXIM		/
页数	文件大小	规格书
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描述
5kVRMS Isolated CAN Transceiver with Integrated Transformer Driver

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MAX14882

5kV

Isolated CAN Transceiver

RMS

with Integrated Transformer Driver

General Description

Beneﬁts and Features

● Integrated Protection for More Robust

The MAX14882 isolated high-speed CAN transceiver

improves communication and safety by integrating gal-

vanic isolation between the CAN-protocol controller-side

(TDX, RXD) of the device and the physical wires of the

CAN network (CANH, CANL) cable-side/bus-side of

the transceiver. Isolation improves communication by

breaking ground loops and reduces noise where large

differences in ground potentials exists between ports.

Communication

• 5kV

Withstand Galvanic Isolation (60s)

RMS

• ±25V Common Mode Range

• ±54V Fault Protection

• ±15kV ESD (HBM) Protection on Driver Outputs/

Receiver Inputs

● High-Performance Transceiver Enables Flexible

Designs

The MAX14882 provides up to 5000V

galvanic isolation and a continuous working voltage of up

(60s) of

RMS

• Wide 3.0V to 5.5V Supply Voltage Range for CAN

Controller Interface

• Field Bus Polarity Control (POL)

• Integrated Transformer Driver for Power Transfer to

Bus-Side

to 848V , while operating at the maximum high-speed

RMS

CAN data rate of 1Mbps.

The MAX14882 features additional integrated protection for

robust communication. The ±25V receiver input common-

mode range exceeds the ISO 11898 specification requirement

of -2V to +7V. Additionally, the CANH and CANL IOs are

fault tolerant up to ±54V and are protected from electrostatic

discharge (ESD) up to ±15kV to GNDB on the bus-side, as

specified by the Human Body Model (HBM).

• Integrated LDO for Powering CAN Bus-Side

● Safety Regulatory Approvals (Pending)

• UL1577 (Basic Insulation)

• cUL According to CSA Bulletin 5A

Ordering Information appears at end of data sheet.

Interfacing with CAN-protocol controllers is simplified by

the wide 3.0V to 5.5V supply voltage range (V

) on the

DDA

controller-side of the device. The supply voltage range for

the CAN bus-side of the device is 4.5V to 5.5V (V ). An

Simpliﬁed Block Diagram

DDB

integrated transformer driver and LDO can be used, with

an external transformer, to generate the isolated supply

3.3V

for V

DDB

Field installation and troubleshooting are simplified by the

polarity select (POL) input. POL swaps the functions of

the CANH and CANL IOs, allowing for simple software

correction of cross-wired bus cables in the field.

TD1

TD2

V_LDO

V_DDB

XFMR

DRIVER

V_DDA

5V LDO

The MAX14882 operates over the -40°C to +125°C

temperature range and is available in a 16-pin wide SOIC

(W SOIC) package with 8mm of creepage and clearance.

POL

RXD

CANH

CANL

Applications

● Building Automation

● Industrial Controls

● HVAC

TXD

MAX14882

● Switching Gear

GNDA

GNDB

19-100246; Rev 0; 2/18

12 3 4 5 6 7...15

中文翻译

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