TLE 7259-2GU Infineon Technologies, TLE 7259-2GU Datasheet - Page 7

• Manufacturer Part Number: TLE 7259-2GU
• Manufacturer: Infineon Technologies

Specifications of TLE 7259-2GU

• Packages: PG-DSO-8
• Transmission Ratemax: 10.4 kbit/s
• Quiescent Current (max.): < 10 µA sleep mode
• Bus Wake-up Capability: Yes
• Additional Features: INH, EN, WK
• Wake-up Inputs: Bus wake-up + wake-up pin

4
The LIN Bus is a single wire, bi-directional bus, used for in-vehicle networks. The LIN Transceiver TLE7259-2GU
is the interface between the microcontroller and the physical LIN Bus (see
values of the microcontroller are driven to the LIN bus via the TxD input of the TLE7259-2GU. The transmit data
stream on the TxD input is converted to a LIN bus signal with optimized slew rate to minimize the EME level off
the LIN network. The RxD output reads 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 to the GND level. In recessive state, the voltage on the LIN
bus is set to the supply voltage
generates a dominant level on the BUS 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 TLE7259-2GU sets the LIN interface pin BUS, 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 TLE7259-2GU for
master node applications, a resistor of 1 kΩ and a reverse diode must be connected between the LIN bus and the
power supply
Figure 3
Data Sheet
Functional Description
LIN bus signals
V
TxD
BUS
RxD
S
or the INH pin of the TLE7259-2GU (see
V
V
V
IO
IO
S
Recessive
Recessive
Recessive
V
S
. By setting the TxD input of the TLE7259-2GU to “Low” the transceiver
Dominant
Dominant
7
Dominant
Figure 15
and
Figure
Figure 15
Recessive
Recessive
Recessive
16).
and
Functional Description
Figure
Figure
Rev. 1.1, 2008-07-14
t
TLE7259-2GU
t
16). The logical
3):