driven by E910.05 K-BUS TRANSCEIVER Features General Description ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ The IC is designed for communication via bidirectional serial data channels. In addition to the level conversion of transmit and receive signals from the microcontroller’s voltage level to the 12V bus level, the device includes plausibility checks in order to guarantee undisturbed bus communication in case of corrupted data from the microcontroller. K-Bus Interface useable as diagnostic interface to ISO 9141 Data rate up to 9.6 kBaud Very low standby current (30µA typical) Output slew rate control to reduce EMI Internal monitoring of prohibited conditions Supply voltage range VS 6V to 16V Supply voltage range VDD 4.5V to 5.5V Bus-line input voltage range from – 24V to + 30V (+40V for t < 0.5s) Operating temperature range – 40°C to + 125°C SO14 package Undefined states are avoided during low voltage conditions by means of a Power-on-Reset which blocks the outputs. The inputs feature internal pull-up and pulldown current sources to maintain defined levels. The bus pins TRM and REC feature a wide input voltage range from – 24V to + 30V independent of VS and VDD. This ensures that in case of missing ground or power supply connection the operation of other devices using the bus is not affected. Applications ÿ Automotive low speed bus systems VBAT VS VDD RxD NRxD External µC TxD BCEN VDD REC Ref. 12 control SEN/STA PU TRM slewrate control & currentlimitation MI MIR RxMI Ref.5 E910.05 ELMOS Semiconductor AG Info Sheet QM-No.: 25IS0017E.00 2009-09-09 ELMOS Semiconductor AG – Headquarters Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 149 [email protected] | www.elmos.de 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. Copyright © 2009 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.