The MC33199D is a serial interface circuit used in diagnostic applications. It is the interface between the microcontroller and the special K and L lines of the ISO diagnostic port. The MC33199D has been designed to meet the «Diagnosis System ISO9141» specification.

• Electrically Compatible with Specification “Diagnosis System ISO9141”
• Transmission speed up to 200kBauds
• Internal Voltage Reference Genarator for Line Comparator Thresholds
• Txd, Rxd and LO pins are 5V CMOS Compatible
• High Current Capability of DIA pin (K line)
• Short Circuit Protection for the K Line Input
• Over Temperature Shutdown with Hysteresis
• Large Operating Range of Driver Supply Voltage
• Large Operating Temperature Range
• ESD Protected pins