Datasheet

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CANH

CANL

RXD

TXD

DOMINANT

TIME OUT

OVER

TEMPERATURE

LOGIC

OUTPUT

MODE SELECT

NC / V

RXD

/ FAULT (See Note A) V

5 3

GND

UNDER

VOLTAGE

DOMINANT

TIME OUT

(See Note B)

or V

RXD

(See Note B)

FAULT LOGIC

MUX (See Note A)

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

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

SN65HVD255, V

RXD

for RXD output level-

Networks Down to 10kbps Networks Using

shifting device on SN65HVD256, and

FAULT Output on SN65HVD257

TXD DTO

B. RXD logic output is driven to 5V V

• Industrial Automation, Control, Sensors and

5V-only supply devices (SN65HVD255,

Drive Systems

SN65HVD257) and driven to V

RXD

• 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

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.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (28 pages)

PAGE 1
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 FEATURES DESCRIPTION • • This CAN transceiver meets the ISO1189-2 High Speed CAN (Controller Area Network) Physical Layer standard.
PAGE 2
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Figure 2.
PAGE 3
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 FUNCTIONAL DESCRIPTION OPERATING MODES The device has two main operating modes: normal mode and silent mode. Operating mode selection is made via the S input pin. Table 1.
PAGE 4
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com SILENT MODE Activate silent mode (receive only) by setting S high. The CAN driver is turned off while the receiver remains active and RXD outputs the received bus state. APPLICATION NOTE: Silent mode may be used to implement babbling idiot protection, to ensure that the driver does not disrupt the network during a local fault.
PAGE 5
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 5 V VCC with FAULT Open-Drain Output Device (SN65HVD257): This device has a FAULT output pin (open-drain). FAULT must be pulled up to VCC or I/O supply level via an external resistor. APPLICATION NOTE: Because the FAULT output pin is open-drain, it actively pulls down when there is no fault, and becomes high-impedance when a fault condition is detected.
PAGE 6
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com Undervoltage Lockout The supply pins have undervoltage detection that places the device in protected mode. This protects the bus during an undervoltage event on either the VCC or VRXD supply pins. Table 4.
PAGE 7
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 TXD fault stuck dominant, example PCB failure or bad software TXD (driver) tTXD_DTO Fault is repaired & transmission capability restored Driver disabled freeing bus for other nodes %XV ZRXOG EH ³VWXFN GRPLQDQW´ EORFNLQJ FRPPXQLFDWLRQ IRU WKH whole network but TXD DTO prevents this and frees the bus for communication after the time tTXD_DTO.
PAGE 8
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com Unpowered Device The device is designed to be an 'ideal passive' or 'no load' to the CAN bus if it is unpowered. The bus pins (CANH, CANL) have extremely low leakage currents when the device is unpowered so they will not load down the bus. This is critical if some nodes of the network will be unpowered while the rest of the of network remains in operation.
PAGE 9
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 ABSOLUTE MAXIMUM RATINGS (1) (2) 1.0 RATING UNIT –0.3 to 6 V –0.3 to 6 and VRXD ≤ VCC + 0.3 V CAN Bus I/O voltage range (CANH, CANL) –27 to 40 V VLogic_Input Logic input pin voltage range (TXD, S) –0.3 to 6 V VLogic_Output Logic output pin voltage range (RXD) SN65HVD255, SN65HVD257 –0.3 to 6 V 1.6 VLogic_Output Logic output pin voltage range (RXD) SN65HVD256 –0.3 to 6 and VI ≤ VRXD + 0.
PAGE 10
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com ELECTRICAL CHARACTERISTICS Over recommended operating conditions, TA = –40°C to 125°C (unless otherwise noted). SN65HVD256 device VRXD = VCC. PARAMETER 4.0 TEST CONDITIONS / COMMENT MIN TYP (1) MAX UNIT SUPPLY CHARACTERISTICS 4.1 Normal Mode (Driving Dominant) See Figure 10, TXD = 0 V, RL = 50 Ω, CL = open, RCM = open, S = 0V 60 85 4.
PAGE 11
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 ELECTRICAL CHARACTERISTICS (continued) Over recommended operating conditions, TA = –40°C to 125°C (unless otherwise noted). SN65HVD256 device VRXD = VCC. PARAMETER TEST CONDITIONS / COMMENT 8.0 DEVICE SWITCHING CHARACTERISTICS 8.1 Total loop delay, driver input (TXD) to tPROP(LOOP1) receiver output (RXD), recessive to dominant tPROP(LOOP2) 8.
PAGE 12
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over recommended operating conditions, TA = –40°C to 125°C (unless otherwise noted). SN65HVD256 device VRXD = VCC. PARAMETER TEST CONDITIONS / COMMENT MIN TYP (1) MAX UNIT 10.0 DRIVER SWITCHING CHARACTERISTICS 10.1 tpHR Propagation delay time, HIGH TXD to Driver Recessive 10.2 tpLD Propagation delay time, LOW TXD to Driver Dominant 10.
PAGE 13
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 ELECTRICAL CHARACTERISTICS (continued) Over recommended operating conditions, TA = –40°C to 125°C (unless otherwise noted). SN65HVD256 device VRXD = VCC. PARAMETER TEST CONDITIONS / COMMENT MIN –10 13.0 FAULT Pin (Fault Output), SN65HVD257 only 13.1 ICH Output current high level FAULT = VCC, See Figure 9 13.2 ICL Output current low level FAULT = 0.
PAGE 14
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com PARAMETER MEASUREMENT INFORMATION VID(D) CANH VID RXD 0.9V 0.5V 0V VID CL_RXD CANL VO VOH RXD 50% 0V t RXD_DTO Figure 8. RXD Dominant Timeout Test Circuit and Measurement IFAULT TXD DTO FAULT RXD DTO + - Thermal Shutdown UV Lockout GND Figure 9. FAULT Test and Measurement RCM CANH TXD VCC TXD RL CL VOD VO(CANL) 50% 0V VCM VO(CANH) CANL 50% tpHR tpLD 90% RCM VOD 0.9 V 0.
PAGE 15
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 PARAMETER MEASUREMENT INFORMATION (continued) CANH 1 .5 V RXD 0 .9 V IO V ID 0 .5 V 0V VID CL_RXD CANL t pDL t pRH VO V OH 90 % V O(RXD) 50 % 10 % V OL tF tR Figure 11. Receiver Test Circuit and Measurement CANH 0V VCC TXD RL CL S 50% CANL VI S 0V tMODE RXD VO VOH CL_RXD RXD 50% VOL Figure 12. tMODE Test Circuit and Measurement Table 6.
PAGE 16
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com CANH VCC TXD RL VI CL 50% TXD 0V CANL S 0V tPROP(LOOP1) RXD VO tPROP(LOOP2) VOH CL_RXD 50% RXD VOL Figure 13. TPROP(LOOP) Test Circuit and Measurement CANH TXD VIH TXD RL CL 0V VOD VOD(D) CANL 0.9 V VOD 0.5 V 0V tTXD_DTO Figure 14. TXD Dominant Timeout Test Circuit and Measurement CANH IOS 200 ms TXD IOS CANL VBUS VBUS VBUS 0V or 0V VBUS VBUS Figure 15.
PAGE 17
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 APPLICATION INFORMATION VIN VIN VOUT 5-V Voltage Regulator (e.g.TPSxxxx) VCC VCC 3 Port x S 7 CANH 8 SN65HVD255 5-V MCU CAN Transceiver RXD TXD RXD TXD 4 1 5 6 2 CANL GND NC Figure 16. Typical 5V Application VIN VIN VOUT 5-V Voltage Regulator (e.g. TPSxxxx) VCC VCC 3 Port x S SN65HVD256 CAN Transceiver VOUT RXD 3-V Voltage Regulator (e.g.
PAGE 18
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com BUS LOADING, LENGTH AND NUMBER OF NODES The ISO11898 Standard specifies a maximum bus length of 40m and maximum stub length of 0.3m with a maximum of 30 nodes. However, with careful design, users can have longer cables, longer stub lengths, and many more nodes to a bus. A large number of nodes requires a transceiver with high input impedance such as the SN65HVD25x family.
PAGE 19
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 CAN TERMINATION The ISO11898 standard specifies the interconnect to be a twisted pair cable (shielded or unshielded) with 120 Ω characteristic impedance (ZO). Resistors equal to the characteristic impedance of the line should be used to terminate both ends of the cable to prevent signal reflections.
PAGE 20
SN65HVD255 SN65HVD256, SN65HVD257 SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 www.ti.com Example: Functional Safety Using the SN65HVD257 in a Redundant Physical Layer CAN Network Topology CAN is a standard linear bus topology using 120 Ω twisted pair cabling. The SN65HVD257 CAN device includes several features to use the CAN physical layer in nonstandard topologies with only one CAN link layer controller (μP) interface.
PAGE 21
SN65HVD255 SN65HVD256, SN65HVD257 www.ti.com SLLSEA2C – DECEMBER 2011 – REVISED SEPTEMBER 2013 REVISION HISTORY Changes from Original (December 2011) to Revision A Page • Updates the Features list ...................................................................................................................................................... 1 • Updated the Applications list ...........................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 25-Jul-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 25-Jul-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN65HVD255DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 SN65HVD256DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 SN65HVD257DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 25-Jul-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN65HVD255DR SOIC D 8 2500 340.5 338.1 20.6 SN65HVD256DR SOIC D 8 2500 340.5 338.1 20.6 SN65HVD257DR SOIC D 8 2500 340.5 338.1 20.
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