TLE6258G

Single-Wire-Transceiver Preliminary Data Sheet 1 1.1 • • • • • • • Overview Features TLE 6258 Single-wire transceiver, suitable for LIN protocol Compatible to LIN specification Compatible to ISO 9141 functions Transmission rate up to 20 kBaud Very low current consumption in stand-by mode Short circuit proof to ground and battery Overtemperature protection P-DSO-8-3 Type TLE 6258 G Ordering Code Q67006-A9469 Package P-DSO-8-3 Description The single-wire transceiver TLE 6258 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 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 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 Siemens 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 is designed to withstand the severe conditions of automotive applications. 1 version: 2.02 date: 2001-08-08 Preliminary Data TLE 6258 1.2 Pin Configuration (top view) RxD 1 8 n.c. ENN 2 7 Vs Vcc 3 6 Bus TxD 4 5 GND P-DSO-8-3 Figure 1: Pinout 1.3 Pin No. 1 2 3 4 5 6 7 8 Pin Definitions and Functions Symbol RxD ENN VCC TxD GND Bus Vs n.c. 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 5V 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 2 version: 2.02 date: 2001-08-08 Preliminary Data TLE 6258 1.4 Functional Block Diagram Vs 7 30 kΩ 30 kΩ Bus 6 3 Vcc Output Stage Driver Temp.Protection Mode Control 2 ENN 4 TxD Receiver 1 RxD TLE 6258 G 5 GND Figure 2: Block Diagram 3 version: 2.02 date: 2001-08-08 Preliminary Data TLE 6258 1.5 Application Information Start Up Power Up Normal Mode ENN low Vcc ON ENN high ENN low Stand-By 1) ENN high 1) VCC ON RxD becomes low when wake-up via bus Figure 3: State Diagram For fail safe reasons the TLE6258 has already a pull up resistor of 30kΩ implemented. To achieve the required timings for the dominant to recessive transition of the bus signal an additional external termination resistor of 1kΩ 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 1nF in the master node (see figure 6, application circuit). In order to reduce the current consumption the TLE 6258 offers a stand-by mode. This mode is selected by switching the Enable Not (ENN) input high (see figure 3, state diagram). 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. 4 version: 2.02 date: 2001-08-08 Preliminary Data TLE 6258 2 2.1 Electrical Characteristics Absolute Maximum Ratings Symbol Limit Values min. max. Unit Remarks Parameter Voltages 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 6 40 32 40 V V V V V kV kV t Vbus > 20% Cbus= 3.3 nF; Tambient < 85 °C VCC = 5 V; VS = 13.5 V 20% < Vbus < 80% Cbus= 3.3 nF; VCC = 5 V; VS = 13.5 V Cbus = 3.3nF; VCC = 5V; VS = 13.5V CRxD = 20 pF Cbus = 3.3 nF; VCC = 5 V; VS = 13.5V CRxD = 20 nF VCC = 5 V rising edge slew rate Sbus(H) 1 2 1.5 4 3 6 V/µs µs Propagation delay td(L),TR TxD-to-RxD LOW (recessive to dominant) Propagation delay td(H),TR TxD-to-RxD HIGH (dominant to recessive) Propagation delay TxD LOW to bus Propagation delay TxD HIGH to bus Propagation delay bus dominant to RxD LOW Propagation delay bus recessive to RxD HIGH Receiver delay symmetry Transmitter delay symmetry Wake-up delay time 2 4 6 µs td(L),T td(H),T td(L),R td(H),R tsym,R tsym,T twake -2 -2 30 1 1 0.5 0.5 4 4 2.0 2.0 2 2 µs µs µs µs µs µs µs VCC = 5 V VCC = 5V; CRxD = 20pF VCC = 5 V; CRxD = 20 pF tsym,R = td(L),R - td(H),R tsym,T = td(L),T - td(H),T 70 150 9 version: 2.02 date: 2001-08-08 Preliminary Data TLE 6258 3 Diagrams Vs 100 nF ENN 1kΩ TxD Bus Cbus RxD 20 pF GND VCC 100 nF Figure 4: Test circuits VCC VTxD GND td(L),T VS td(H),T t Vbus GND Vbus,rd Vbus,dr td(L),R VCC td(H),R t VRxD 0.3*VCC GND td(L),TR td(H),TR 0.7*VCC t Figure 5: Timing diagrams for dynamic characteristics 10 version: 2.02 date: 2001-08-08 Preliminary Data TLE 6258 4 Application Vbat LIN bus master node TLE 6258 G Vs ENN RxD 100 nF 1 kΩ µP TxD Bus GND VCC GND 100 nF 100 nF 1nF VI 100 nF 22 µF VQ e.g. TLE 4278 GND 5V 22 µF ECU 1 slave node TLE 6258 G Vs ENN 100 nF RxD Bus GND TxD VCC 100 nF 100 nF µP GND VI 100 nF 22 µF VQ 5V e.g. TLE 4278 GND 22 µF ECU X Figure 6: Application Circuit 11 version: 2.02 date: 2001-08-08 Preliminary Data TLE 6258 5 Package Outlines P-DSO-8-3 (Plastic Dual Small Outline Package) Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Book “Package Information”. SMD = Surface Mounted Device Dimensions in mm 12 version: 2.02 date: 2001-08-08 Preliminary Data TLE 6258 Edition 1999-10-12 Published by Infineon Technologies AG St.-Martin-Strasse 53 D-81541 München © Infineon Technologies AG1999 All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as warranted 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. Infineon Technologies is an approved CECC manufacturer. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide (see address list). 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. 13 version: 2.02 date: 2001-08-08