High-Speed CAN Transceiver
MCP2551The MCP2551 is a high-speed CAN, fault-tolerant
device that serves as the interface between a CAN protocol
controller and the physical bus. The MCP2551
provides differential transmit and receive capability for
the CAN protocol controller and is fully compatible with
the ISO-11898 standard, including 24V requirements. It
will operate at speeds of up to 1 Mb/s.
Typically, each node in a CAN system must have a
device to convert the digital signals generated by a CAN
controller to signals suitable for transmission over the
bus cabling (differential output). It also provides a buffer
between the CAN controller and the high-voltage spikes
that can be generated on the CAN bus by outside
sources (EMI, ESD, electrical transients, etc.).
Features
• Supports 1 Mb/s operation
• Implements ISO-11898 standard physical layer
requirements
• Suitable for 12V and 24V systems
• Externally-controlled slope for reduced RFI
emissions
• Detection of ground fault (permanent dominant)
on TXD input
• Power-on reset and voltage brown-out protection
• An unpowered node or brown-out event will not
disturb the CAN bus
• Low current standby operation
• Protection against damage due to short-circuit
conditions (positive or negative battery voltage)
• Protection against high-voltage transients
• Automatic thermal shutdown protection
• Up to 112 nodes can be connected
• High noise immunity due to differential bus
implementation
• Temperature ranges:
- Industrial (I): -40°C to +85°C
- Extended (E): -40°C to +125°C
datasheet pdfhttp://ww1.microchip.com/downloads/en/DeviceDoc/21667d.pdf
Stand-Alone CAN Controller With SPI™ Interface
MCP2515
Description
Microchip Technology’s MCP2515 is a stand-alone
Controller Area Network (CAN) controller that implements
the CAN specification, version 2.0B. It is capable
of transmitting and receiving both standard and
extended data and remote frames. The MCP2515 has
two acceptance masks and six acceptance filters that
are used to filter out unwanted messages, thereby
reducing the host MCUs overhead. The MCP2515
interfaces with microcontrollers (MCUs) via an industry
standard Serial Peripheral Interface (SPI).
Features
• Implements CAN V2.0B at 1 Mb/s:
- 0 – 8 byte length in the data field
- Standard and extended data and remote
frames
• Receive buffers, masks and filters:
- Two receive buffers with prioritized message
storage
- Six 29-bit filters
- Two 29-bit masks
• Data byte filtering on the first two data bytes
(applies to standard data frames)
• Three transmit buffers with prioritizaton and abort
features
• High-speed SPI™ Interface (10 MHz):
- SPI modes 0,0 and 1,1
• One-shot mode ensures message transmission is
attempted only one time
• Clock out pin with programmable prescaler:
- Can be used as a clock source for other
device(s)
• Start-of-Frame (SOF) signal is available for
monitoring the SOF signal:
- Can be used for time-slot-based protocols
and/or bus diagnostics to detect early bus
degredation
• Interrupt output pin with selectable enables
• Buffer Full output pins configurable as:
- Interrupt output for each receive buffer
- General purpose output
• Request-to-Send (RTS) input pins individually
configurable as:
- Control pins to request transmission for each
transmit buffer
- General purpose inputs
• Low-power CMOS technology:
- Operates from 2.7V – 5.5V
- 5 mA active current (typical)
- 1 µA standby current (typical) (Sleep mode)
• Temperature ranges supported:
- Industrial (I): -40°C to +85°C
- Extended (E): -40°C to +125°C
datasheet pdfhttp://ww1.microchip.com/downloads/en/DeviceDoc/21801d.pdf
High speed CAN transceiver
TJA1040
GENERAL DESCRIPTION
The TJA1040 is the interface between the Controller Area
Network (CAN) protocol controller and the physical bus.
It is primarily intended for high speed applications, up to
1 MBaud, in passenger cars. The device provides
differential transmit capability to the bus and differential
receive capability to the CAN controller.
The TJA1040 is the next step up from the TJA1050 high
speed CAN transceiver. Being pin compatible and offering
the same excellent EMC performance, the TJA1040 also
features:
- An ideal passive behaviour when supply voltage is off
- A very low-current standby mode with remote wake-up
capability via the bus.
This makes the TJA1040 an excellent choice in nodes
which can be in power-down or standby mode in partially
powered networks.
FEATURES
- Fully compatible with the ISO 11898 standard
- High speed (up to 1 MBaud)
- Very low-current standby mode with remote wake-up
capability via the bus
- Very low ElectroMagnetic Emission (EME)
- Differential receiver with high common-mode range for
ElectroMagnetic Immunity (EMI)
- Transceiver in unpowered state disengages from the
bus (zero load)
- Input levels compatible with 3.3 V and 5 V devices
- Voltage source for stabilizing the recessive bus level if
split termination is used (further improvement of EME)
- At least 110 nodes can be connected
- Transmit Data (TXD) dominant time-out function
- Bus pins protected against transients in automotive
environments
- Bus pins and pin SPLIT short-circuit proof to battery and
ground
- Thermally protected.
datasheet pdf
http://www.nxp.com/acrobat_download/datasheets/TJA1040_6.pdf
SN65HVD230
SN65HVD231
SN65HVD232
3.3-V CAN TRANSCEIVERS
DESCRIPTION
.
The SN65HVD230, SN65HVD231, and SN65HVD232 controller area network (CAN) transceivers are designed for use with the Texas Instruments TMS320Lx240x™; 3.3-V DSPs with CAN controllers, or with equivalent devices. They are intended for use in applications employing the CAN serial communication physical layer in accordance with the ISO 11898 standard. Each CAN transceiver is designed to provide differential transmit capability to the bus and differential receive capability to a CAN controller at speeds up to 1 Mbps.
Designed for operation in especially-harsh environments, these devices feature cross-wire protection, loss-of-ground and overvoltage protection, overtemperature protection, as well as wide common-mode range.
The transceiver interfaces the single-ended CAN controller with the differential CAN bus found in industrial,building automation, and automotive applications. It operates over a -2-V to 7-V common-mode range on the bus, and it can withstand common-mode transients of ±25 V.
On the SN65HVD230 and SN65HVD231, pin 8 provides three different modes of operation: high-speed, slope control, and low-power modes. The high-speed mode of operation is selected by connecting pin 8 to ground, allowing the transmitter output transistors to switch on and off as fast as possible with no limitation on the rise and fall slopes. The rise and fall slopes can be adjusted by connecting a resistor to ground at pin 8, since the slope is proportional to the pin's output current. This slope control is implemented with external resistor values of 10 kΩ, to achieve a 15-V/s slew rate, to 100 kΩ, to achieve a 2-V/s slew rate. See the Application Information
section of this data sheet.
FEATURES
- Operates With a 3.3-V Supply
- Low Power Replacement for the PCA82C250 Footprint
- Bus/Pin ESD Protection Exceeds 16 kV HBM
- High Input Impedance Allows for 120 Nodes on
- Controlled Driver Output Transition Times for
Improved Signal Quality on the SN65HVD230
and SN65HVD231
- Unpowered Node Does Not Disturb the Bus
- Compatible With the Requirements of the ISO
11898 Standard
- Low-Current SN65HVD230 Standby Mode
370 A Typical
- Low-Current SN65HVD231 Sleep Mode 40 nA
Typical
- Designed for Signaling Rates(1) up to 1
Megabit/Second (Mbps)
- Thermal Shutdown Protection
- Open-Circuit Fail-Safe Design
- Glitch-Free Power-Up and Power-Down
Protection for Hot-Plugging Applications
datasheet pdf
http://focus.ti.com/lit/ds/symlink/sn65hvd230.pdf
PCA82C250
CAN controller interface
General description
The PCA82C250 is the interface between a CAN protocol controller and the physical bus.The device provides differential transmit capability to the bus and differential receive capability to the CAN controller.
Features- Fully compatible with the “ISO 11898” standard
- High speed (up to 1 MBd)
- Bus lines protected against transients in an automotive environment
- Slope control to reduce Radio Frequency Interference (RFI)
- Differential receiver with wide common-mode range for high immunity against
ElectroMagnetic Interference (EMI)
- Thermally protected
- Short-circuit proof to battery and ground
- Low-current Standby mode
- An unpowered node does not disturb the bus lines
- At least 110 nodes can be connected
datasheet pdf
http://www.nxp.com/acrobat_download/datasheets/PCA82C250_6.pdf
