TLE8250GVIO Infineon Technologies, TLE8250GVIO Datasheet - Page 10

• Manufacturer Part Number: TLE8250GVIO
• Description: IC TXRX CAN HS DSO-8
• Manufacturer: Infineon Technologies

Specifications of TLE8250GVIO

• Packages: PG-DSO-8
• Transmission Ratemax: 1.0 Mbit/s
• Quiescent Current (max.): < 15 µA @ 5V standby
• Bus Wake-up Capability: No
• Additional Features: NEN
• Wake-up Inputs: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5
5.1
The CANH and CANL bus outputs are short-circuit-proof, either against GND or a positive supply voltage. A
current limiting circuit protects the transceiver against damages. If the device is heating up due to a continuos short
on CANH or CANL, the internal over-temperature protection switches off the bus transmitter.
5.2
All logic input pins have internal pull-up resistor to
open or floating, the TLE8250GVIO enters into the Stand-By mode per default. In Stand-By mode the output driver
stage of the TLE8250GVIO is disabled, the bus biasing is shut off and the HS CAN TLE8250GVIO transceiver will
not influence the data on the CAN bus.
5.3
The TxD Time-out feature protects the CAN bus against permanent blocking in case the logical signal on the TxD
pin is continuously “Low”. A continuous “Low” signal on the TxD pin can have it’s root cause in a locked-up
microcontroller or a short on the printed circuit board for example. In Normal Operation mode, a logical “Low”
signal on the TxD pin for the time t > t
output driver stage (see
RxD output pin.
Figure 5
Figure 5
on the TxD input pin activates the TxD time-out function and deactivates the transmitter output stage. To release
the transmitter output stage after a TxD time-out event the TLE8250GVIO requires a signal change on the TxD
input pin from logical “Low” to logical “High”.
Data Sheet
shows the way how the transmission stage is deactivated and activated again. A permanent “Low” signal
Fail Safe Functions
Short circuit protection
Open Logic Pins
TxD Time-Out function
TxD Time-Out function
Figure
5). The receive unit is still active and the data on the bus are still monitored by the
TxD
enables the TxD Time-out feature and the TLE8250GVIO disables the
V
IO
. In case the
10
V
IO
supply is activated and the logical pins are
Rev. 1.0, 2010-09-03
Fail Safe Functions
TLE8250GVIO