MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 2003
33390 Simplified Application Diagram
Document order number: MC33390/D
Rev 4.0, 2/2003
33390
Class B Serial Transceiver
The 33390 is a serial transceiver designed to provide bi-directional half-
duplex communication meeting the automotive SAE Standard J-1850 Class B
Data Communication Network Interface specification. It is designed to
interface directly to on-board vehicle microcontrollers and serves to transmit
and receive data on a single-wire bus at data rates of 10.4 kbps using Variable
Pulse Width Modulation (VPWM). The 33390 operates directly from a vehicle's
12 V battery system and functions in a logic fashion as an I/O interface
between the microcontroller's 5.0 V CMOS logic level swings and the required
0 V to 7.0 V waveshaped signal swings of the bus. The bus output driver is
short circuit current limited.
Features
Designed for SAE J-1850 Class B Data Rates
Full Operational Bus Dynamics Over a Supply Voltage of 9.0 to 16 V
Ambient Operating Temperature of -40
°
C to 125
°
C
Interfaces Directly to Standard 5.0 V CMOS Microcontroller
BUS Pin Protected Against Shorts to Battery and Ground
Thermal Shutdown with Hysteresis
Voltage Waveshaping of Bus Output Driver
40 V Max V
BAT
Capability
J-1850 SERIAL TRANSCEIVER
ORDERING INFORMATION
Device
Temperature
Range (T
A
)
Package
MC33390D/DR2
-40 to 125°C
8 SOICN
D SUFFIX
PLASTIC PACKAGE
CASE 751
(8-LEAD SOICN)
33390
BUS
V
BAT
SLEEP
Tx
Rx
4X/LOOP
GND
LOAD
Primary
Node
MCU
V
BAT
Secondary
Nodes
10.6 k
470 pF
47 μH
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.