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SN65HVD255

更新时间： 2024-11-24 09:17:19
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德州仪器 - TI /
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26页 700K
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CAN Transceiver with Fast Loop Times for Highly Loaded Networks

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SN65HVD255 数据手册

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SN65HVD255  
SN65HVD256, SN65HVD257  
www.ti.com  
SLLSEA2B –DECEMBER 2011–REVISED JUNE 2012  
CAN Transceivers with Fast Loop Times for Highly Loaded Networks and Features For  
Functional Safety Networks  
Check for Samples: SN65HVD255, SN65HVD256, SN65HVD257  
1
FEATURES  
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  
megabit per second (Mbps) 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.  
•
•
Meets the Requirements of ISO11898-2  
'Turbo CAN': Short Propagation Delay Times  
and Fast Loop Times; Higher Data Rates in  
Network; Enhances System Timing Margins  
•
•
I/O Voltage Range Supports 3.3V and 5V MCUs  
Ideal Passive Behavior When Unpowered  
–
Bus Pins are High Impedance (no load to  
operating bus)  
–
–
Logic Pins are High Impedance  
Power Up/Down With Glitch Free Operation  
On Bus  
NC / VRXD / FAULT (See Note A)  
5
VCC  
3
FAULT LOGIC  
•
Protection Features:  
MUX (See Note A)  
VCC  
OVER  
TEMPERATURE  
–
ESD Protection of Bus Pins  
HBM ESD Protection Exceeds ±12kV  
VCC  
–
7
6
CANH  
CANL  
DOMINANT  
TIME OUT  
1
8
TXD  
–
–
–
–
Bus Fault Protection –27V to 40V  
Undervoltage Protection on Supply Pins  
Driver Dominant Time Out (TXD DTO)  
S
MODE SELECT  
SN65HVD257: Receiver Dominant Time Out  
(RXD DTO)  
UNDER  
VOLTAGE  
–
–
SN65HVD257: FAULT Output Pin  
Thermal Shutdown Protection  
VCC or VRXD (See Note B)  
DOMINANT  
TIME OUT  
(See Note B)  
4
LOGIC  
OUTPUT  
RXD  
•
Characterized for –40°C to 125°C Operation  
2
GND  
APPLICATIONS  
A. Pin 5 function is device dependent; NC on  
SN65HVD255, VRXD for RXD output level-  
shifting device on SN65HVD256, and  
FAULT Output on SN65HVD257  
•
1Mbps Operation in Highly Loaded CAN  
Networks Down to 10kbps Networks Using  
TXD DTO  
B. RXD logic output is driven to 5V VCC on  
5V-only supply devices (SN65HVD255,  
SN65HVD257) and driven to VRXD on  
output level-shifting device (SN65HVD256).  
•
Industrial Automation, Control, Sensors and  
Drive Systems  
•
•
•
•
Building and Climate Control Automation  
Security Systems  
C. RXD (Receiver) Dominant State Time Out  
is a device dependent option available only  
on SN65HVD257.  
Telecom Base Station Status and Control  
SN65HVD257: Functional Safety With  
Redundant and Multi-topology CAN networks  
Figure 1. Functional Block Diagram  
•
CAN Bus Standards Such as CANopen,  
DeviceNet, NMEA2000, ARNIC825, ISO11783,  
CAN Kingdom, 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.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011–2012, Texas Instruments Incorporated  
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SN65HVD255 替代型号

型号 品牌 替代类型 描述 数据表
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