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PDF TLE7259-3 Data sheet ( Hoja de datos )
| Número de pieza | TLE7259-3 | |
| Descripción | LIN Transceiver | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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TLE7259-3
LIN Transceiver
TLE7259-3GE
TLE7259-3LE
Data Sheet
Rev. 1.0, 2013-08-13
Automotive Power
1 page  
3 Pin Configuration
3.1 Pin Assignment
TLE7259-3
Pin Configuration
RxD 1
8
EN 2
7
WK 3
6
TxD 4
5
Figure 2
PG-DSO-8
Pin Configuration
INH
VS
BUS
GND
RxD 1
8 INH
EN 2
WK 3
7 VS
6 BUS
TxD 4
5 GND
PG-TSON-8
(Top side X-Ray view)
3.2 Pin Definitions and Functions
Pin Symbol
1 RxD
2 EN
3 WK
4 TxD
5 GND
6 BUS
7 VS
8 INH
Function
Receive data output;
External Pull Up necessary
LOW in dominant state, active LOW after a Wake-Up event at BUS or WK pin
Enable input;
integrated pull-down, device set to normal operation mode when HIGH
Wake input;
active LOW, negative edge triggered, internal pull-up
Transmit data input;
integrated pull-down, LOW in dominant state; active LOW after Wake-Up via WK pin
Ground
Bus input / output;
LIN bus line input / output
LOW in dominant state
Internal termination and pull-up current source
Battery supply input
Inhibit output;
battery supply related output
HIGH (VS) in Normal and Stand-By operation mode
can be used to control an external voltage regulator
can be used to control external bus termination resistor when the device will be used
as Master node
Data Sheet
5 Rev. 1.0, 2013-08-13
5 Page 
TLE7259-3
Functional Description
4.4 Sleep Mode
In order to reduce the current consumption the TLE7259-3 offers a Sleep mode. In Sleep mode the quiescent
current on VS and the leakage current on the pin BUS are cut back to a minimum.
To switch the TLE7259-3 from Normal Operation mode to Sleep mode, the EN pin has to be set to “Low”.
Conversely a logical “High” on the EN pin sets the device directly back to Normal Operation mode (see Figure 4).
While the TLE7259-3 is in Sleep mode the following functions are available:
• The output stage is disabled and the internal bus terminations are switched off (High Impedance on the pin
BUS). The internal current source on the bus pin ensures that the level on the pin BUS remains recessive and
protects the LIN network against accidental bus wake-up events.
• The receiver stage is turned off.
• RxD output pin is “High” if a pull-up resistor is connected to the external microcontroller supply. The TxD pin is
disabled. The logical state on the TxD pin is “Low”, due to the internal pull-down resistor.
• The INH output is switched off and floating.
• The bus wake-up comparator is active and will cause a transition to Stand-By mode in case of a bus wake-up
event.
• The WK pin is active and turns the TLE7259-3 to Stand-By mode in case of a local wake-up.
• The EN pin remains active, switching the EN pin to “High“ changes the operation mode to Normal Slope mode.
4.5 Wake-Up Events
A wake-up event changes the operation mode of the TLE7259-3 from Sleep mode to Stand-By mode. There are
3 different ways to wake-up the TLE7259-3 from Sleep mode.
• Bus wake-up via a minimum dominant signal (tWK,bus) on the pin BUS.
• Local wake-up via a minimum dominant time (tWK) on the WK pin.
• Mode change from Sleep mode to Normal Operation mode, by setting the EN pin to logical “High”.
4.6 Bus Wake-Up via LIN bus
VBUS
VBUS,wk
LIN BUS Signal
tWK,bus
VBUS,wk
Sleep Mode
Stand-By Mode
INH
Figure 7 Bus Wake-Up behavior
The bus wake-up event, often called remote Wake-Up, changes the operation mode from Sleep mode to Stand-
By mode. A falling edge on the LIN bus, followed by a dominant bus signal t > tWK,bus results in a bus wake-up
event. The mode change to Stand-By mode becomes active with the following rising edge on the LIN bus. The
Data Sheet
11 Rev. 1.0, 2013-08-13
11 Page | ||
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| PDF Descargar | [ Datasheet TLE7259-3.PDF ] | |
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