Data Sheet

7

Rev. 1.0

2016-07-15

TLE8250V

High Speed CAN Transceiver

Functional Description

The TLE8250VSJ is a High-Speed CAN transceiver, operating as an interface between the CAN controller and

the physical bus medium. A HS CAN network is a two wire, differential network which allows data transmission

rates for CAN FD frames up to 2 MBit/s. Characteristic for HS CAN networks are the two signal states on the

HS CAN bus: dominant and recessive (see Figure 3).

HS CAN bus and operate in both directions, as an input and as an output. RxD and TxD pins are the interface

to the CAN controller, the TxD pin is an input pin and the RxD pin is an output pin. The NEN pin is the input pin

for the mode selection (see Figure 4).

By setting the TxD input pin to logical “low” the transmitter of the TLE8250VSJ drives a dominant signal to the

CANH and CANL pins. Setting TxD input to logical “high” turns off the transmitter and the output voltage on

CANH and CANL discharges towards the recessive level. The recessive output voltage is provided by the bus

biasing (see Figure 1). The output of the transmitter is considered to be dominant, when the voltage difference

Parallel to the transmitter the normal-mode receiver monitors the signal on the CANH and CANL pins and

indicates it on the RxD output pin. A dominant signal on the CANH and CANL pins sets the RxD output pin to

logical “low”, vice versa a recessive signal sets the RxD output to logical “high”. The normal-mode receiver

recessive.

To be conform with HS CAN features, like the bit to bit arbitration, the signal on the RxD output has to follow

The thresholds of the digital inputs (TxD and NEN) and also the RxD output voltage are adapted to the digital