MOTOROLA
SEMICONDUCTOR
MC33199
Automotive ISO 9141
Serial Link Driver
ISO 9141 SERIAL
LINK DRIVER
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.
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,
used during the wake up sequence in the ISO transmission.
The MC33199D has a unique feature which allow transmission Baud rate
up to 200kBauds.
SEMICONDUCTOR
TECHNICAL DATA
• 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
REF-OUT
VS
Reference
Generator
Protection
LO
C2
+
PIN CONNECTIONS
L
VCC
RXD
C1
+
DIA
13
VS
3
12
L
LO
4
11
I1
5
10
GND
TXD
6
9
DIA
NC
I1
Vcc
REF-OUT
2
REF-IN-K
I1
source
REF-IN-K
14
RXD
REF-IN-L
1
REF-IN-L
-
7
8
NC
Thermal
Shutdown
TXD
Driver
GND
Current
Limit
ORDERING INFORMATION
Device
Temperature
Range
Package
MC33199D
- 40°C to+125°C
SO14
© Motorola,Inc 1996
Rev 1
