TLE7250V_15 Datasheet, PDF (8/34 Pages) Infineon Technologies AG – High Speed CAN-Transceiver

TLE7250VLE
TLE7250VSJ
Functional Description
4
Functional Description
HS CAN is a serial bus system that connects microcontrollers, sensors and actuators for real-time control
applications. The use of the Controller Area Network (abbreviated CAN) within road vehicles is described by the
international standard ISO 11898. According to the 7-layer OSI reference model the physical layer of a HS CAN
bus system specifies the data transmission from one CAN node to all other available CAN nodes within the
network. The physical layer specification of a CAN bus system includes all electrical and mechanical specifications
of a CAN network. The CAN transceiver is part of the physical layer specification. Several different physical layer
standards of CAN networks have been developed in recent years. The TLE7250V is a High Speed CAN
transceiver without a wake-up function and defined by the international standard ISO 11898-2.
4.1
High Speed CAN Physical Layer
TxD
VIO
CANH
CANL
VCC
VIO =
VCC =
TxD =
RxD =
CANH =
t _{CANL =}
VDiff =
Digital supply voltage
Transmitter supply voltage
Transmit data input from
the microcontroller
Receive data output to
the microcontroller
Bus level on the CANH
input/output
Bus level on the CANL
input/output
Differential voltage
between CANH and CANL
VDiff = VCANH – VCANL
VDiff
VCC
RxD
VIO
t
“dominant” receiver threshold
“recessive” receiver threshold
t
tLoop(H,L)
tLoop(L,H)
t
Figure 3 High speed CAN bus signals and logic signals
Data Sheet
8
Rev. 1.0, 2015-08-12