Datasheet > U6268B

U6268B

更新时间： 2024-09-14 22:41:51

品牌	Logo	应用领域
TEMIC		传感器
页数	文件大小	规格书
12页	179K
描述
Side-Airbag Sensor Dual Interface

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U6268B 数据手册

U6268B

Side-Airbag Sensor Dual Interface

Description

The U6268B is an interface IC for remote automotive interface by current modulation.

sensors. It links the crash sensors in the driver- and

As the device is for safety critical applications, highest

data transmission security is mandatory. With high

immunity against cross-coupling between the two

channels, the U6228B is tailored for the harsh automotive

environment.

passenger door with the main airbag unit in the

dashboard. Two identical channels supply the external

sensors and receive digital information from them via one

active wire each. The interface supplies the external

sensors with a pre-regulated smoothed voltage, the

external units transmit the digital information back to the

Features

Two identical interface channels

TTL-compatible input activate the sensor

Provides a pre-regulated smoothed voltage and a

supply current up to 50 mA for the sensors

Data output can be directly connected to a micro-

controller input

Receives data from the sensors by current modulation

with a transmission rate of 60 kBaud (transmission

bandwidth 500 kHz)

Operation supply voltage range 5.7 V

40 V

ESD protection according to MIL-STD-883C test

method 3015.7

Current modulation provides high noise immunity for

data transfer

High-level EMI protection

Benefits

Voltage supply and data transmission with one active

wire over long distances

Ordering Information

Extended Type Number

U6268B

Package

SO16

Remarks

Block Diagram

Channel 1

power

Data

Voltage

comparator

I/U converter

Smoothed voltage

supply

Crash

sensor

Channel 1

Data

trans–

mission

regulator

Enable

Channel 1

Channel 2

Temperature

monitor

Short circuit

detection

Channel 2

power

supply

Enable

Smoothed voltage

regulator

Crash

sensor

Channel 2

Data

Voltage

comparator

Data

trans–

mission

I/U converter

13839

Figure 1. Block diagram

TELEFUNKEN Semiconductors

1 (12)

Rev. A1, 21-May-97

Preliminary Information

12 3 4 5 6 7...12

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