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PDF TLE7258D Data sheet ( Hoja de datos )
| Número de pieza | TLE7258D | |
| Descripción | LIN Transceiver | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TLE7258D (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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TLE7258D
LIN Transceiver
TLE7258D
Data Sheet
Rev. 1.2, 2014-12-08
Automotive Power
1 page  
3 Pin Configuration
3.1 Pin Assignment
TLE7258D
Pin Configuration
RxD 1
EN 2
N.C. 3
TxD 4
Figure 2 Pin configuration
3.2 Pin Definitions and Functions
8 N.C.
7 VS
6 BUS
5 GND
TLE7258D_PINNING
Pin Symbol
1 RxD
2 EN
3 N.C.
4 TxD
5 GND
6 BUS
7
8
PAD
Vs
N.C.
–
Function
Receive data output;
External pull-up necessary
Monitors the LIN bus signal in Normal Operation mode
Indicates a wake-up event in Standby mode
Enable input;
Integrated pull-down resistor
Logical “high” to select Normal Operation mode
Not Connected
Transmit data input;
Integrated pull-up current source
Logical “low” to drive a “dominant” signal on the LIN bus
Ground
Bus input / output;
Integrated LIN slave termination
Battery supply input;
100 nF decoupling capacitor required
Not Connected
Connect to PCB heat sink area. Do not connect to other voltage potential than GND
Data Sheet
5 Rev. 1.2, 2014-12-08
5 Page 
TLE7258D
Functional Description
4.4 Sleep Mode
Sleep mode is a low power mode with quiescent current consumption reduced to a minimum while the device is
still able to wake-up by a message on the LIN bus.
To switch the TLE7258D from Normal Operation mode to Sleep mode, the EN input has to be set to “low”.
Conversely a logical “high” signal on the EN input sets the device directly back to Normal Operation mode (see
Figure 4). The TLE7258D can only enter Sleep mode from Normal Operation mode.
EN
RxD: „high“ or „low“ depending on
RxD the signals on the LIN bus
TxD Data transmission
tMode
Normal Operation mode
RxD: “high“ because of external pull-up
resistor to the microcontroller supply voltage
t
t
TxD: „high impedance“
t
Sleep mode
TLE7258D_SLEEP_MODE
Figure 7 Entering Sleep mode from Normal Operation mode
While the TLE7258D is in Sleep mode the following functions are available:
• The transmitter is turned off.
• The receiver is turned off.
• The BUS output is terminated to VS via the internal termination resistor RBUS (see Figure 1).
• The RxD output is “high” if a pull-up resistor is connected to the external microcontroller supply.
• The TxD input is disabled and the internal pull-up current source is switched off.
• The bus wake-up comparator is active and will cause transition to Standby mode in case of a wake-up event.
• In Sleep mode only the power-on reset level of the undervoltage detection is active (see “Undervoltage
Detection” on Page 15).
• The EN input remains active. A “high” signal on the EN input triggers a transition to Normal Operation mode.
Data Sheet
11 Rev. 1.2, 2014-12-08
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TLE7258D.PDF ] | |
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