Freescale Semiconductor
Technical Data
Document Number: MC33390
Rev 7.0, 11/2006
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
• Pb-Free Packaging Designated by Suffix Code EF
33390
J-1850 SERIAL TRANSCEIVER
D SUFFIX
EF SUFFIX (PB-FREE)
98ASB42564B
8-LEAD SOICN
ORDERING INFORMATION
Device
MC33390D/DR2
-40°C to 125°C
MCZ33390EF/R2
8 SOICN
Temperature
Range (T
A
)
Package
VPWR
33390
+VBAT
BUS
LOAD
Primary
Node
MCU
SLEEP
TX
RX
4X/Loop
GND
Secondary
Nodes
Figure 1. 33390 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications,
as may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2007. All rights reserved.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
