SI9241EY

The Si9241EY is a monolithic bus transceiver designed to provide bidirectional serial communication in automotive diagnostic applications.

The Si9241EY device incorporates protection against overvoltages and short circuits to GND or V_B. The transceiver pin is protected and can be driven beyond the VB voltage.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.

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 TX together.The Si9241EY is built on the Siliconix BiC/DMOS process. An epitaxial layer prevents latchup.

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).