文档介绍：MOTOROLA
SEMICONDUCTOR MC33199
Automotive ISO 9141
Serial Link Driver
The MC33199D is a serial interface circuit used in diagnostic applica- ISO 9141 SERIAL
tions. 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 LINK DRIVER
meet the «Diagnosis System ISO9141» specification.
The device has a bi-directional bus K line driver, fully protected against
short circuits and over temperature. It also includes the L line receiver, SEMICONDUCTOR
used during the wake up sequence in the ISO transmission. TECHNICAL DATA
The MC33199D has a unique feature which allow transmission Baud rate
up to 200kBauds.
• 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
Block Diagram and Typical Application
Vcc VS
REF-OUT Reference Protection PIN CONNECTIONS
Generator
LO
+ L
C2 VCC 1 14 REF-OUT
-
REF-IN-L 2 13 VS
REF-IN-L