Datasheet


SGLS356 − MAY 2006
16
www.ti.com
TYPICAL CHARACTERISTICS
Figure 25
0
0.5
1
1.5
2
2.5
3
−50 −5 5 50
V
CC
= 3 V
REFERENCE VOLTAGE
vs
REFERENCE CURRENT
V
ref
− Reference Voltage − V
I
ref
− Reference Current − µA
V
CC
= 3.6 V
APPLICATION INFORMATION
This application provides information concerning the implementation of the physical medium attachment layer
in a CAN network according to the ISO 11898 standard. It presents a typical application circuit and test results,
as well as discussions on slope control, total loop delay, and interoperability in 5-V systems.
introduction
ISO 11898 is the international standard for high-speed serial communication using the controller area network
(CAN) bus protocol. It supports multimaster operation, real-time control, programmable data rates up to 1 Mbps,
and powerful redundant error checking procedures that provide reliable data transmission. It is suited for
networking intelligent devices as well as sensors and actuators within the rugged electrical environment of a
machine chassis or factory floor. The SN65HVD230M family of 3.3-V CAN transceivers implement the lowest
layers of the ISO/OSI reference model. This is the interface with the physical signaling output of the CAN
controller of the Texas Instruments TMS320Lx240x 3.3-V DSPs, as illustrated in Figure 26.