Datasheet


SGLS356 − MAY 2006
18
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APPLICATION INFORMATION
TMS320Lx2403/6/7
CAN Bus Line
CAN-Controller
CANTX/IOPC6
SN65HVD230
Electronic Control Unit (ECU)
CANH CANL
DR
CANRX/IOPC7
Figure 27. Details of a Typical CAN Node
CANH
CANL
CAN Bus Line
ECU ECU ECU
12 n
120 Ω120 Ω
Figure 28. Typical CAN Network
The SN65HVD230M 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.
features of the SN65HVD230M
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 failsafe 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.