参数资料
| 型号： | NCV7380DR2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/14页 |
| 文件大小： | 0K |
| 描述： | IC TRANSCEIVER LINEAR 8-SOIC |
| 产品变化通告： | Product Discontinuation 21/Jun/2007 |
| 标准包装： | 2,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | LIN |
| 电源电压： | 7 V ~ 18 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 带卷 (TR) |
NCV7380
http://onsemi.com
10
Recommendations for System Design
The goal of the LIN physical layer standard is to have a
universal definition of the LIN system for plug and play
solutions in LIN networks up to 20 kBd bus speeds.
In case of small and medium LIN networks, it’s
recommended to adjust the total network capacitance to at
least 4.0 nF for good EMC and EMI behavior. This can be
done by setting only the master node capacitance. The
slave node capacitance should have a unit load of typically
220 pF for good EMC/EMI behavior.
In large networks with long bus lines and the maximum
number of nodes, some system parameters can exceed the
defined limits and the LIN system designer must intervene.
The whole capacitance of a slave node is not only the unit
load capacitor itself. Additionally, there is the capacitance
of wires and connectors, and the internal capacitance of the
LIN transmitter. This internal capacitance is strongly
dependent on the technology of the IC manufacturer and
should be in the range of 30 pF to 150 pF. If the bus lines
have a total length of nearly 40m, the total bus capacitance
can exceed the LIN system limit of 10 nF.
A second parameter of concern is the integrated slave
termination resistor tolerance. If most of the slave nodes
have a slave termination resistance at the allowed
maximum of 60 k
W, the total network resistance is more
than 700
W. Even if the total network capacitance is below
or equal to the maximum specified value of 10 nF, the
network time constant is higher than 7.0
ms.
This problem can be solved only by adjusting the master
termination resistor to the required maximum network time
constant of 5.0
ms (max).
NOTE: The NCV7380 meets the requirements for
implementation in RCbased slave nodes. The LIN
Protocol Specification requires the deviation of the slave
node clock to the master node clock after synchronization
must not differ by more than
"2%.
Setting the network time constant is necessary in large
networks (primarily resistance) and also in small networks
(primarily capacitance).
MIN/MAX SLOPE TIME CALCULATION
(In accordance to the LIN System Parameter Table)
Figure 7. Slope Time and Slew Rate Calculation
(In accordance to LIN physical layer specification 1.3)
60%
100%
0%
tsrec
tsdom
VBUS
40%
Vdom
60%
40%
The slew rate of the bus voltage is measured between
40% and 60% of the output voltage swing (linear region).
The output voltage swing is the difference between
dominant and recessive bus voltage.
dV dt + 0.2 * Vswing (t40%t60%)
The slope time is the extension of the slew rate tangent
until the upper and lower voltage swing limits:
tslope + 5* (t40%t60%)
The slope time of the recessive to dominant edge is directly
determined by the slew rate control of the transmitter:
tslope + Vswing dV dt
The dominant to recessive edge is influenced from the
network time constant and the slew rate control, because it’s
a passive edge. In case of low battery voltages and high bus
loads the rising edge is only determined by the network. If the
rising edge slew rate exceeds the value of the dominant one,
the slew rate control determines the rising edge.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCV7380DR2G | 功能描述:IC TRANSCEIVER LINEAR 8-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:25 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:4.5 V ~ 5.5 V 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 供应商设备封装:16-PDIP 包装:管件 |
| NCV7381 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:FlexRay Bus Driver |
| NCV73810V2GEVB | 功能描述:BOARD EVAL FLEXRAY BUS NCV7381 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:FlexRay™ 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| NCV7381DP0G | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:FlexRay Bus Driver |
| NCV7381DP0R2G | 功能描述:总线收发器 CLAMP 30 FLEXRAY TRANSC. RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
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