Freescale Semiconductor, Inc. reserves the right to change the detail specifications,

as may be required, to permit improvements in the design of its products.

Document Number: MC33390

Rev 7.0, 11/2006

Freescale Semiconductor

Technical Data

© Freescale Semiconductor, Inc., 2007. All rights reserved.

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

• Pb-Free Packaging Designated by Suffix Code EF

Figure 1. 33390 Simplified Application Diagram

J-1850 SERIAL TRANSCEIVER

D SUFFIX

EF SUFFIX (PB-FREE)

98ASB42564B

8-LEAD SOICN

33390

ORDERING INFORMATION

Device

Temperature

Package

MC33390D/DR2

-40°C to 125°C

8 SOICN

MCZ33390EF/R2

33390

Primary

Node

Secondary

Nodes

MCU

VPWR

+VBAT

SLEEP

TX

RX

4X/Loop

GND

BUS

LOAD