driven by - Elmos Semiconductor AG

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.