E910.05 Datasheet, PDF (1/1 Pages) ELMOS Semiconductor AG – K-Bus transceiver

BUS IC
ÿ K-Bus transceiver
LIN- / K-Bus transceiver
LIN transceiver + VREG
LIN transceiver
LIN transceiver + VREG + WD
Single wire CAN transceiver
CAN transceiver
DC/DC CONVERTER
ÿ K-Bus transceiver
FEATURES
ÿ Supply voltage range VS 6.9V to 19V
ÿ Supply voltage range VDD 4.5V to 5.5V
ÿ Data rate up to 9.600 Baud
ÿ Bus-line input voltage range from – 24V to + 30V
(+40V for t < 0.5s)
ÿ Internal monitoring of prohibited conditions
ÿ Output slewrate control to reduce EMI
ÿ Very low standby current (30µA typical)
ÿ Useable as diagnostic interface to ISO 9141
ÿ – 40°C to + 125°C operating temperature
ÿ SO14n package
APPLICATION
ÿ Automotive low speed bus systems
MOTOR DRIVER IC
RIPPLE COUNTER
DESCRIPTION
The IC is designed for communication via bidirectional serial data
channels. In addition to the level conversion of transmit and re-
ceive signals from the micro processor’s voltage level to the 12V
bus level, the device includes plausibility checks in order to guar-
antee undisturbed bus communication in case of corrupted data
from the micro controller.
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 pull-down current sources to main-
tain defined levels.
The bus pins TRM and REC feature a wide input voltage range
from – 24V to + 40V independent of VS and VDD. This ensures that
in case of missing ground or power supply connection the opera-
tion of other devices using the bus is not affected.
DRIVER IC
I/O IC
SENSOR IC
SENSOR INTERFACE IC
PINNING
Pin Name
1
RxMI
2
MIR
3
GND
4
VDD
5
TRM
6
REC
7
VS
8
PU
9
MI
10 SEN/STA
11
TxD
12
BCEN
13
RxD
14 NRxD
Description
Receive data from MI-Bus
MI-Bus input
Ground
+5V supply
Transmitter output
K-Bus input
+12V supply
Switching pull-up between VDD and VS
MI-mode, disables slewrate control on TRM
Status of transmit path
Transmit data to TRM
Enable bit compare function
Receive data from K-Bus
Inverted RxD
E910.05
PACKAGE
RxMI
1
MIR
2
GND
3
VDD
4
TRM
5
REC
6
VS
7
14
NRxD
13
RxD
12
BCEN
11
TxD
10
SEN/STA
9
MI
8
PU
BLOCK DIAGRAM
VBAT
VDD
RxD
NRxD
TxD
µC
BCEN
SEN/STA
PU
MI
RxMI
VS VDD
REC
Ref. 12
TRM
control
slewrate
control
& current-
limitation
MIR
Ref.5
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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 © 2005 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.
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elmos product catalog june 2005
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