TCAN330 Datasheet, PDF (28/39 Pages) Texas Instruments – CAN Transceivers

TCAN330, TCAN332, TCAN334, TCAN337
TCAN330G, TCAN332G, TCAN334G, TCAN337G
SLLSEQ7A – DECEMBER 2015 – REVISED JANUARY 2016
Typical Application (continued)
Standard Termination
Split Termination
CANH
CAN
Transceiver
R_TERM
CANH
CAN
Transceiver
CANL
CANL
11.2.3 Application Curves
Figure 36. CAN Bus Termination Concepts
R_TERM/2
R_TERM/2
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C_SPLIT
1 Mbps
60 Ω Load
Temp = 25°C
V_CC = 3.3 V
Figure 37. TXD, CANH/L and RXD Waveforms
5 Mbps
60 Ω Load
Temp = 25°C
V_CC = 3.3 V
Figure 38. TXD, CANH/L and RXD Waveforms
11.3 System Examples
11.3.1 ISO11898 Compliance of TCAN33x Family of 3.3-V CAN Transceivers Introduction
Many users value the low power consumption of operating their CAN transceivers from a 3.3-V supply. However,
some are concerned about the interoperability with 5 V supplied transceivers on the same bus. This report
analyzes this situation to address those concerns.
11.3.2 Differential Signal
CAN is a differential bus where complementary signals are sent over two wires and the voltage difference
between the two wires defines the logical state of the bus. The differential CAN receiver monitors this voltage
difference and outputs the bus state with a single ended logic level output signal.
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