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TMS320Lx2403/6/7

CAN Bus Line

CAN-Controller

CANTX/IOPC6

SN65HVD230

Electronic Control Unit (ECU)

CANH

CANL

D

R

CANRX/IOPC7

CANH

CANL

CAN Bus Line

ECU

ECU

ECU

1

2

n

120

Ω

120

Ω

FEATURES of the SN65HVD230, SN65HVD231, and SN65HVD232

SN65HVD230

SN65HVD231

SN65HVD232

SLOS346H – MARCH 2001 – REVISED JULY 2006

APPLICATION INFORMATION (continued)

Figure 32. Details of a Typical CAN Node

Figure 33. Typical CAN Network

The SN65HVD230/231/232 3.3-V CAN transceivers provide the interface between the 3.3-V TMS320Lx2403/6/7

CAN DSPs and the differential bus line, and are designed to transmit data at signaling rates up to 1 Mbps as

defined by the ISO 11898 standard.

The SN65HVD230/231/232 are pin-compatible (but not functionally identical) with one another and, depending

upon the application, may be used with identical circuit boards.

These transceivers feature 3.3-V operation and standard compatibility with signaling rates up to 1 Mbps, and

also offer 16-kV HBM ESD protection on the bus pins, thermal shutdown protection, bus fault protection, and

open-circuit receiver failsafe. The fail-safe design of the receiver assures a logic high at the receiver output if the

bus wires become open circuited. If a high ambient operating environment temperature or excessive output

current result in thermal shutdown, the bus pins become high impedance, while the D and R pins default to a

logic high.

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