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33990

更新时间: 2022-04-23 23:00:11
品牌 Logo 应用领域
飞思卡尔 - FREESCALE /
页数 文件大小 规格书
16页 645K
描述
Enhanced Class B Serial Transceiver

33990 数据手册

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Document Number: MC33990  
Rev 3.0, 11/2006  
Freescale Semiconductor  
Advance Information  
Enhanced Class B Serial  
Transceiver  
33990  
The 33990 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 33990 operates directly from a vehicle's 12 V battery system and  
functions in a true 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.  
J-1850 SERIAL TRANSCEIVER  
D SUFFIX  
EF SUFFIX (PB-FREE)  
98ASB42564B  
Features  
8-PIN SOICN  
• Designed for SAE J-1850 Class B Data Rates  
• Full Operational Bus Dynamics Over a Supply Voltage of 9.0 V  
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  
ORDERING INFORMATION  
Temperature  
Device  
Package  
Range (T )  
A
MC33990D/DR2  
MCZ33990EF/R2  
-40°C to 125°C  
8 SOICNN  
• Voltage Waveshaping of Bus Output Driver  
• Internally Reverse Battery Protected  
• 40 V Max VBAT Capability  
• Pb-Free Packaging Designated by Suffix Code EF  
33990  
V
BAT  
+VBAT  
Primary  
Node  
BUS  
SLEEP  
TX  
Secondary  
Nodes  
LOAD  
GND  
MCU  
RX  
4X/LOOP  
Figure 1. 33990 Simplified Application Diagram  
* This document contains certain information on a new product.  
Specifications and information herein are subject to change without notice.  
© Freescale Semiconductor, Inc., 2006. All rights reserved.  

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