TLE6258-2

D a t a S h e e t, R e v . 2 . 0, J a n . 20 0 5 TLE 6258-2 LIN Transceiver Automotive Power Never stop thinking. Edition 2005-01-13 Published by Infineon Technologies AG, St.-Martin-Strasse 53, 81669 München, Germany © Infineon Technologies AG 2004. All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as a guarantee of characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. LIN Transceiver TLE 6258-2 Features • • • • • • • • Single-wire transceiver, suitable for LIN protocol Compatible to LIN specification 1.2, 1.3 and 2.0 Compatible to ISO 9141 functions Transmission rate up to 20 kBaud Very low current consumption in stand-by mode Wake-up from Bus Short circuit proof to ground and battery Overtemperature protection P-DSO-8-3, -6, -7, -8, -9 Description The single wire transceiver TLE 6258-2 is a monolithic integrated circuit in a P-DSO-8-3 package. It works as an interface between the protocol controller and the physical bus. The TLE 6258-2 is especially suitable to drive the bus line in LIN systems in automotive and industrial applications. Further it can be used in standard ISO9141 systems. In order to reduce the current consumption the TLE 6258-2 offers a stand-by mode. A wake-up caused by a message on the bus sets the RxD output low until the device is switched to normal operation mode. The IC is based on the Smart Power Technology SPT® which allows bipolar and CMOS control circuitry in accordance with DMOS power devices existing on the same monolithic circuit. The TLE 6258-2 is designed to withstand the severe conditions of automotive applications. Type TLE 6258-2 G Data Sheet Ordering Code Q67006-A9695 3 Package P-DSO-8-3 Rev. 2.0, 2005-01-13 TLE 6258-2 TLE 6258-2 G (P-DSO-8) RxD ENH 1 2 3 4 8 7 6 5 AEP03406.VSD N.C. VS Bus GND VCC TxD Figure 1 Table 1 Pin No. 1 2 3 4 5 6 7 8 Pin Configuration (top view) Pin Definitions and Functions Symbol RxD ENN Function Receive data output; integrated pull-up, LOW in dominant state Enable not input; integrated 30 kΩ pull-up, transceiver in normal operation mode when LOW 5 V supply input Transmit data input; integrated pull-up, LOW in dominant state Ground Bus output/input; internal 30 kΩ pull-up, LOW in dominant state Battery supply input Not connected VCC TxD GND Bus VS n.c. Data Sheet 4 Rev. 2.0, 2005-01-13 TLE 6258-2 VS 7 TLE 6258-2 G 3 VCC 30 kΩ Mode Control Driver Temp.Protection 4 TxD 2 ENN 30 kΩ 6 Output Stage Bus Receiver 1 5 RxD GND AEB03405.VSD Figure 2 Functional Block Diagram Data Sheet 5 Rev. 2.0, 2005-01-13 TLE 6258-2 Application Information Normal Mode ENN Low Start Up Power Up VCC ON ENN Low Power-Up ENN High ENN High ENN Low VCC RxD Low 1) ON or High 3) Off Wake Up t > tWAKE Stand-by Mode ENN High VCC ON or Off 1) After wake-up via bus 3) After start up, VCC ON TOAEA03451_1.VSD Figure 3 State Diagram For fail safe reasons the TLE 6258-2 has already a pull-up resistor of 30 kΩ implemented. To achieve the required timings for the dominant to recessive transition of the bus signal an additional external termination resistor of 1 kΩ is required. It is recommended to place this resistor in the master node. To avoid reverse currents from the bus line into the battery supply line in case of an unpowered node, it is recommended to place a diode in series to the external pull-up. For small systems (low bus capacitance) the EMC performance of the system is supported by an additional capacitor of at least 1 nF in the master node (see Figure 6). In order to reduce the current consumption the TLE 6258-2 offers a stand-by mode. This mode is selected by switching the Enable Not (ENN) input high (see Figure 3). In the stand-by mode a wake-up caused by a message on the bus is indicated by setting the RxD output low. When entering the normal mode this wake-up flag is reset and the RxD output is released to transmit the bus data. Data Sheet 6 Rev. 2.0, 2005-01-13 TLE 6258-2 Table 2 Parameter Voltages Absolute Maximum Ratings Symbol Limit Values Min. Max. 6 40 32 40 V V V V V kV kV – – – Unit Remarks Supply voltage Battery supply voltage Bus input voltage Bus input voltage Logic voltages at EN, TxD, RxD Electrostatic discharge voltage at VS, Bus Electrostatic discharge voltage Temperatures Junction temperature VCC VS Vbus Vbus VI VESD VESD -0.3 -0.3 -20 -20 -0.3 -4 -2 VCC + 0.3 4 2 t