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| BUS IC K-Bus transceiver LIN- / K-Bus transceiver LIN transceiver + VREG y LIN transceiver LIN transceiver + VREG + WD Single wire CAN transceiver CAN transceiver DC/DC CONVERTER MOTOR DRIVER IC RIPPLE COUNTER DRIVER IC I/O IC SENSOR IC SENSOR INTERFACE IC y LIN transceiver FEATURES y y y y y y y y y y y y y Supply voltage range VS 6V to 18V Supply voltage range VDD 4.5V to 5.5V LIN 2.0 compatible interface for data rates up to 20kBaud Output slewrate control to reduce EMI Short circuit current limitation Over temperature protection Bus-line DC voltage range - 24V to + 30V Receiver debounce filter Very low active current consumption Very low standby current (typ. < 10 A) Wake up output by LIN-Bus transition and EN, battery power on - 40C to + 125C operating temperature SO 8n package EN also statically keeps the high side output INH active. A high to low transition on EN as well as VDD falling under the POR threshold will dynamically reset INH to high impedance. A debounced low level on the bus-line for a certain time will set INH to high level as well as a - power on condition - on the battery supply pin VS. DESCRIPTION The IC interfaces between a C and a Local Interconnect Network (LIN) bus-line, mainly in automotive sub bus applications. When pin EN is at High level (VDD), a digital input signal at pin TxD is transferred to the fully protected low side driver on pin BUS. The voltage level on pin BUS is detected by a comparator with a threshold of nominally 50% of the battery supply VS. After passing a debounce filter it is valid on pin RxD as a digital signal referenced to the digital supply voltage VDD. PINNING Pin 1 2 3 4 5 6 7 8 Name RxD EN VDD TxD GND BUS VS INH Description Serial data from IC to C Enable activates transmitter,receive and output INH +5V digital supply Serial data from C to IC Ground LIN-Bus pin +12V positive supply Switched battery supply output to activate, e.g. an external voltage regulator RxD EN VDD TxD 1 2 3 4 E910.43 PACKAGE 8 7 6 5 INH VS BUS GND APPLICATION y Bus interface for Local Interconnect Network (LIN) communication especially in automobile applications BLOCK DIAGRAM ext. voltage regulator EN VDD VDD VDD INH EN VBAT VS wake up & POR C BUS RXD control slewrate control TXD Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications. 14 Copyright (c) 2005 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited. www.elmos.de | sales@elmos.de elmos product catalog june 2005 15 |
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