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DESCRIPTION

FUNCTION TABLES

SN65HVD230

SN65HVD231

SN65HVD232

SLOS346H – MARCH 2001 – REVISED JULY 2006

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

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 k

Ω, 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 SN65HVD232 is a basic CAN transceiver with no added options; pins 5 and 8 are NC, no connection.

INTEGRATED SLOPE

PART NUMBER

LOW POWER MODE

MARKED AS:

CONTROL

SN65HVD230

Standby mode

Yes

Yes

VP230

SN65HVD231

Sleep mode

Yes

Yes

VP231

40

°C to 85°C

No standby or sleep

SN65HVD232

No

No

VP232

mode

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

OUTPUTS

INPUT D

BUS STATE

CANH

CANL

L

H

L

Dominant

H

Z

Z

Recessive

Open

X

Z

Z

Recessive

X

Z

Z

Recessive

(1)

H = high level; L = low level; X = irrelevant; ? = indeterminate; Z = high impedance

2

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