CANH

7

6

CANL

RXD

1

TXD

S

8

DOMINANT

TIME OUT

OVER

TEMPERATURE

LOGIC

OUTPUT

MODE SELECT

4

5

3

GND

2

UNDER

VOLTAGE

DOMINANT

TIME OUT

(See Note B)

FAULT LOGIC

SN65HVD255

SN65HVD256, SN65HVD257

www.ti.com

SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013

'Turbo' CAN Transceivers for Higher Data Rates and Large Networks Including Features

for Functional Safety

Check for Samples: SN65HVD255, SN65HVD256, SN65HVD257

1

FEATURES

DESCRIPTION

This CAN transceiver meets the ISO1189-2 High

•

Meets the Requirements of ISO11898-2

Speed CAN (Controller Area Network) Physical Layer

•

'Turbo' CAN:

standard. It is designed for data rates in excess of 1

–

Short and Symmetrical Propagation Delay

Mbps for CAN in short networks, and enhanced

Times and Fast Loop Times for Enhanced

timing margin and higher data rates in long and

highly-loaded networks. The device provides many

Timing Margin

protection features to enhance device and CAN-

–

Higher Data Rates in CAN Networks

network

robustness.

The

SN65HVD257

adds

•

I/O Voltage Range Supports 3.3V and 5V MCUs

additional features, allowing easy design of redundant

•

Ideal Passive Behavior When Unpowered

and multi-topology networks with fault indication for

higher levels of functional safety in the CAN system.

–

Bus and Logic Pins are High Impedance

(no load)

–

Power Up/Down With Glitch Free Operation

On Bus

•

Protection Features

–

HBM ESD Protection Exceeds ±12kV

–

Bus Fault Protection –27V to 40V

–

Undervoltage Protection on Supply Pins

–

Driver Dominant Time Out (TXD DTO)

–

SN65HVD257: Receiver Dominant Time Out

(RXD DTO)

–

SN65HVD257: FAULT Output Pin

–

Thermal Shutdown Protection

•

Characterized for –40°C to 125°C Operation

APPLICATIONS

A.

Pin 5 function is device dependent; NC on

•

1Mbps Operation in Highly Loaded CAN

Networks Down to 10kbps Networks Using

shifting

device

on

SN65HVD256,

and

FAULT Output on SN65HVD257

TXD DTO

B.

•

Industrial Automation, Control, Sensors and

5V-only

supply

devices

(SN65HVD255,

Drive Systems

•

Building, Security and Climate Control

output level-shifting device (SN65HVD256).

Automation

C.

RXD (Receiver) Dominant State Time Out

is a device dependent option available only

•

Telecom Base Station Status and Control

on SN65HVD257.

•

SN65HVD257: Functional Safety With

Figure 1. Functional Block Diagram

Redundant and Multi-topology CAN networks

•

CAN Bus Standards Such as CANopen,

DeviceNet, NMEA2000, ARNIC825, ISO11783,

CANaerospace

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2011–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.