FEATURES

• Operating Power Supply Range

6 V ≤ VBAT ≤ 36 V

• Reverse Battery Protection Down to VBAT ≥ - 24 V

• Standby Mode With Very Low Current Consumption

IBAT(SB) = 1 μA at VDD = 0.5 V

• Low Quiescent Current in OFF Condition

IBAT = 120 μA and IDD ≤ 10 A

• ISO 9141 Compatible

• Overtemperature Shutdown Function For K Output

• Defined K Output OFF for Open GND

• Defined Receive Output Status for Open K Input

• Defined K Output OFF for TX Input Open

• Open Drain Fault Output

• 2 kV ESD

• Typical Transmit Speeds of 200 kBaud

DESCRIPTION

The Si9243AEY 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 VBAT. The transceiver pin is protected and

can be driven beyond the VBAT voltage.

The RX output is capable of driving CMOS or 1 x LSTTL

load.

The Si9243AEY is built on the Vishay Siliconix BiC/DMOS

process. This process supports bipolar transistors, CMOS,

and DMOS. An epitaxial layer prevents latchup.

The Si9243AEY is available in a 8-pin SO package and

operates over the automotive temperature range (- 40 °C to

125 °C). The Si9243AEY is available in both standard and

lead (Pb)-free packages.