TLE 7259G Infineon Technologies, TLE 7259G Datasheet - Page 5

• Manufacturer Part Number: TLE 7259G
• Manufacturer: Infineon Technologies

Specifications of TLE 7259G

• Packages: P-DSO-8
• Transmission Ratemax: 10.4 - 20.0 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 TLE7259G is
the interface between the micro controller and the physical LIN Bus (see
values of the micro controller are driven to the LIN bus via the TxD input of the TLE7259G. The transmit data
stream on the TxD input is converted to a LIN bus signal with optimized slew rate to minimize the EME level on
the LIN bus. The RxD output reads back the information from the LIN bus to the micro controller, regardless of the
logical value of the TxD input. The receiver has an integrated filter network to suppress noise on the LIN Bus and
to increase the EMI level of the transceiver. Two logical states are possible on the LIN bus according to the LIN
Specification 2.1. The dominate state (voltage near ground) on the LIN bus represents a “logic 0“ on the TxD input
of the TLE7259G; the recessive state (voltage near supply voltage
timing diagram
Every LIN network consists of a master node and one or more slave nodes. To configure the TLE7259G 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
4.1
The TLE7259G has 3 different operation modes. After a power-up event the TLE7259G starts from the Stand-By
mode. By setting the EN pin to “logic 1“ the micro controller can change the mode into Normal-Operation mode.
Figure 3
Data Sheet
Functional Description
Operating Modes
Operation Mode State Diagram
Figure
EN
1) After wake up (via Bus or Wake)
2) After start up
3) After wake up via Wake (internal strong pull down, > 1.9 mA)
4) After wake up via Bus (internal weak pull down, 350 k
V
9).
S
Low
or the INH pin of the TLE7259G (see
High
Low
Normal Mode
EN
EN
Sleep Mode
EN
Power-Up
Floating
High
INH
INH
High
5
Wake Up
via Bus:
via Wake:
EN
Figure 11
Low
EN
t
V
Ω
>
High
t
S
Floating
>
t
)
) represents a “logic 1” on the TxD input (see
wake,bus
Low
t
RxD
wake
Stand-By
1)
and
Figure 11
2)
Figure
High
Low
TxD
3)
4)
AEA03514.VSD
and
12).
High
INH
Functional Description
Figure
Rev 2.1, 2007-04-27
12). The logical
TLE7259G