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| 型号： | MC33399D |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 5/19页 |
| 文件大小： | 0K |
| 描述： | IC LIN INTERFACE W/WAKE 8-SOIC |
| 标准包装： | 98 |
| 系列： | * |
| 应用： | * |
| 接口： | * |
| 电源电压： | * |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
Analog Integrated Circuit Device Data
Freescale Semiconductor
13
33399
FUNCTIONAL DEVICE OPERATION
PROTECTION AND DIAGNOSIS FEATURES
PROTECTION AND DIAGNOSIS FEATURES
ELECTROSTATIC DISCHARGE (ESD)
The 33399 has two Human Body Model ESD values. All
pins can handle ±4.0 kV. The LIN bus pin, with respect to
ground, can handle ±5.0 kV.
ELECTROMAGNETIC COMPATIBILITY
RADIATED EMISSION ON LIN BUS OUTPUT LINE
Radiated emission level on the LIN bus output line is
internally limited and reduced by active slew rate control of
the output bus driver. Figure 11 shows the results in the
frequency range 100 kHz to 2.0 MHz.
ELECTROMAGNETIC IMMUNITY (EMI)
On the LIN bus pin, the 33399 offers high EMI level from
external disturbance occurring at the LIN bus pin in order to
guarantee communication during external disturbance.
On the WAKE input pin, an internal filter is implemented to
reduce false wake-up during external disturbance.
NOISE FILTERING
Noise filtering is used to protect the electronic module
against illegal wake-up spikes on the bus. Integrated receiver
filters suppress any high-frequency (HF) noise induced into
the bus wires. The cut-off frequency of these filters is a
compromise between propagation delay and HF
suppression.
Figure 11. Radiated Emission in Normal Mode
Table 5. Explanation of Operational and Transitional Modes State Diagram
Operational/
Transitional
LIN
INH
EN
TXD
RXD
Sleep Mode
Recessive state, driver off.
20
A pull-up current source.
LOW
X
High-impedance.
Awake
Recessive state, driver off.
HIGH
LOW
X
LOW.
Normal Mode
Driver active. 30 k
pullup active.
HIGH
LOW to drive LIN bus in
dominant.
HIGH to drive LIN bus in
recessive.
Report LIN bus level:
LOW LIN bus dominant
HIGH LIN bus recessive
X = Don’t care.
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