TLE 8458G Infineon Technologies, TLE 8458G Datasheet - Page 21

• Manufacturer Part Number: TLE 8458G
• Manufacturer: Infineon Technologies

Specifications of TLE 8458G

• Packages: PG-DSO-8
• Transmission Ratemax: 20.0 kbit/s
• Quiescent Current (max.): < 10 µA sleep mode
• Bus Wake-up Capability: Yes
• Additional Features: Vreg, EN, WK
• Wake-up Inputs: Bus wake-up + wake-up pin

7
7.1
The LIN Bus is a single wire, bi-directional bus, used for in-vehicle networks. The LIN Transceiver implemented
inside the TLE8458Gx is the interface between the microcontroller and the physical LIN Bus. (see
Figure
TLE8458Gx. The transmit data stream on the TxD input is converted to a LIN bus signal with optimized slew rate
to minimize the EME level of the LIN network. The RxD output sends back the information from the LIN bus to the
microcontroller. The receiver has an integrated filter network to suppress noise on the LIN Bus and to increase the
EMI (Electro Magnetic Immunity) level of the transceiver.
Two logical states are possible on the LIN bus according to the LIN Specification 2.1 (see
In dominant state, the voltage on the LIN bus is set close to the GND level. In recessive state, the voltage on the
LIN bus is set close to the supply voltage
generates a dominant level on the LIN interface pin. The RxD output reads back the signal on the LIN bus and
indicates a dominant LIN bus signal with a logical LOW to the microcontroller. Setting the TxD pin to HIGH the
transceiver TLE8458Gx sets the LIN interface pin LIN to the recessive level, at the same time the recessive level
on the LIN bus is indicated by a logical “High” on the RxD output.
Every LIN network consists of a master node and one or more slave nodes. To configure the TLE8458Gx for
master node applications, a resistor in the range of 1 kΩ and a reverse diode must be connected between the LIN
bus and the power supply
Figure 10
Data Sheet
15). The digital output data from the microcontroller are driven to the LIN bus via the TxD input pin on the
LIN Transceiver
Functional Description
LIN Bus Signals
V
S
. (see
Figure
V
15).
S
. By setting the TxD input of the TLE8458Gx to LOW the transceiver
21
Rev. 1.01, 2009-04-28
Figure
LIN Transceiver
TLE8458Gx
10):
Figure 1
and