1 Features

1• Meets the Requirements of ISO11898-2

• Turbo CAN:

– Short and Symmetrical Propagation Delay

Times and Fast Loop Times for Enhanced

Timing Margin

– Higher Data Rates in CAN Networks

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

• Ideal Passive Behavior When Unpowered

– Bus and Logic Pins are High Impedance (No

Load)

– Power Up and Power Down With Glitch-Free

Operation on Bus

• Protection Features

– HBM ESD Protection Exceeds ±12 kV

– Bus Fault Protection –27 V to 40 V

– 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

2 Applications

• 1-Mbps Operation in Highly Loaded CAN

Networks Down to 10-kbps Networks Using TXD

DTO

• Industrial Automation, Control, Sensors, and Drive

Systems

• Building, Security, and Climate Control

Automation

• Telecom Base Station Status and Control

• SN65HVD257: Functional Safety With Redundant

and Multitopology CAN networks

• CAN Bus Standards Such as CANopen,

DeviceNet, NMEA2000, ARNIC825, ISO11783,

and CANaerospace

3 Description

This CAN transceiver meets the ISO1189-2 High

Speed CAN (Controller Area Network) Physical Layer standard. It is designed for data rates in excess of

1 Mbps for CAN in short networks, and enhanced

timing margin and higher data rates in long and

highly-loaded networks. The device provides many

protection features to enhance device and CANnetwork

robustness. The SN65HVD257 device adds

additional features, allowing for easy design of

redundant and multitopology networks with fault

indication for higher levels of functional safety in the

CAN system.