Si9241

Manufacturer Part NumberSi9241
ManufacturerVishay Intertechnology
Si9241 datasheet
 


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Single-Ended Bus Transceiver
Features
D Single-Ended Transceiver
D Survives Shorts and Transients on Automotive Bus
D Wide Power Supply Voltage Range
D ISO 9141 Compatible
D Open Drain Fault Output
Description
The Si9241EY is a monolithic bus transceiver designed to
provide bidirectional serial communication in automotive
diagnostic applications.
The device incorporates protection against overvoltages
and short circuits to GND or V
. The transceiver pin is
B
protected and can be driven beyond the V
A fault output provides an active low in case of a short
circuit or an open load. In the event of an over temperature
condition, the output is immediately switched off and a fault
indicated. This condition can only be reset once the over
temperature condition is removed, and CS is toggled high.
Pin Configuration and Functional Block Diagram
Narrow Body
SO Package
V
8
1
RX
DD
7
TX
2
V
B
CS
6
3
K
5
FAULT
4
GND
Top View
Order Number:
Si9241EY
Updates to this data sheet may be obtained via facsimile by calling Siliconix FaxBack, 1-408-970-5600. Please request FaxBack document #70013.
Application Note AN602 may also be obtained via FaxBack, request document #70573.
S-49719—Rev. E, 27-Sep-96
Benefits
D Single-Wire Multiplexer Interface
D ISO Diagnosis Bus
For bi-directional communication, CS must be High for
“receive” and Low for “transmit”. If CS is Low, while IC
is receiving data, an incorrect fault signal will occur. To
inhibit the open load and short detect, tie CS and T
together.
The Si9241EY is built on the Siliconix BiC/DMOS
voltage.
process. An epitaxial layer prevents latchup.
B
The RX output is capable of driving CMOS or
1
LSTTL load.
The Si9241EY is available in a space efficient 8-pin SO
package. It operates reliably over the automotive
temperature range (–40 to 125_C).
V
DD
RX
V
DD
CS
TX
Fault
FAULT
Detector
Si9241EY
Applications
D Automobiles
D Trucks
D Tractors
X
V
B
V
B
2
+
K
GND
1