Texas Instruments SN65HVD230 SN65HVD231 SN65HVD232 pdf datasheet download

SN65HVD230
SN65HVD231
SN65HVD232

FEATURES

2• 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
a Bus
• 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 μA 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
(1) The signaling rate of a line is the number of voltage
transitions that are made per second expressed in the units
bps (bits per second).


APPLICATIONS

• Motor Control
• Industrial Automation
• Basestation Control and Status
• Robotics
• Automotive
• UPS Control

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/μs slew rate, to 100 kΩ, to achieve a 2-V/μs slew rate. See the Application Information
section of this data sheet.
The circuit of the SN65HVD230 enters a low-current standby mode during which the driver is switched off and
the receiver remains active if a high logic level is applied to pin 8. The DSP controller reverses this low-current
standby mode when a dominant state (bus differential voltage > 900 mV typical) occurs on the bus.
The unique difference between the SN65HVD230 and the SN65HVD231 is that both the driver and the receiver
are switched off in the SN65HVD231 when a high logic level is applied to pin 8 and remain in this sleep mode
until the circuit is reactivated by a low logic level on pin 8.
The Vref pin 5 on the SN65HVD230 and SN65HVD231 is available as a VCC/2 voltage reference.
The SN65HVD232 is a basic CAN transceiver with no added options; pins 5 and 8 are NC, no connection.

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