FEATURES

Controlled Baseline

− One Assembly/Test Site, One Fabrication

Site

Extended Temperature Performance of −55°C

to 125°C

Enhanced Diminishing Manufacturing

Sources (DMS) Support

Enhanced Product-Change Notification

Qualification Pedigree†

Operates With a 3.3-V Supply

Low Power Replacement for the PCA82C250

Footprint

Bus/Pin ESD Protection Exceeds 15-kV HBM

Controlled Driver Output Transition Times for

Improved Signal Quality on the

SN65HVD230M

Unpowered Node Does Not Disturb the Bus

Compatible With the Requirements of the

ISO 11898 Standard

Low-Current SN65HVD230M Standby Mode

370 μA Typical

Designed for Signaling Rates‡ Up To

1 Megabit/Second (Mbps)

Thermal Shutdown Protection

Open-Circuit Fail-Safe Design

DESCRIPTION

The SN65HVD230M controller area network (CAN) transceiver is 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 SN65HVD230M, RS (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.

The circuit of the SN65HVD230M 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 RS (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 Vref (pin 5 on the SN65HVD230M) is available as a VCC/2 voltage reference.