SN65HVD256DR Datasheet, PDF (1/28 Pages) Texas Instruments – Turbo CAN Transceivers for Higher Data Rates and Large Networks Including Features

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SN65HVD255
SN65HVD256, SN65HVD257
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
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 3.3V and 5V MCUs
• Ideal Passive Behavior When Unpowered
– 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
• 1Mbps Operation in Highly Loaded CAN
Networks Down to 10kbps 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 Multi-topology CAN networks
• CAN Bus Standards Such as CANopen,
DeviceNet, NMEA2000, ARNIC825, ISO11783,
CANaerospace
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 CAN-
network robustness. The SN65HVD257 adds
additional features, allowing easy design of redundant
and multi-topology networks with fault indication for
higher levels of functional safety in the CAN system.
NC / VRXD / FAULT (See Note A)
5
FAULT LOGIC
MUX (See Note A)
VCC
OVER
TEMPERATURE
VCC
3
VCC
TXD ¹
DOMINANT
TIME OUT
7 _CANH
6 _CANL
S⁸
MODE SELECT
RXD ⁴
UNDER
VOLTAGE
VCC or VRXD (See Note B)
LOGIC
OUTPUT
DOMINANT
TIME OUT
(See Note B)
2
GND
A. Pin 5 function is device dependent; NC on
SN65HVD255, V_RXD for RXD output level-
shifting device on SN65HVD256, and
FAULT Output on SN65HVD257
B. RXD logic output is driven to 5V V_CC on
5V-only supply devices (SN65HVD255,
SN65HVD257) and driven to V_RXD on
output level-shifting device (SN65HVD256).
C. RXD (Receiver) Dominant State Time Out
is a device dependent option available only
on SN65HVD257.
Figure 1. Functional Block Diagram
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
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