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参数资料
| 型号： | 74LCX541MSAX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 4/10页 |
| 文件大小： | 0K |
| 描述： | IC BUFF/DVR 8BIT LOW V 20SSOP |
| 标准包装： | 2,000 |
| 系列： | 74LCX |
| 逻辑类型： | 缓冲器/线路驱动器，非反相 |
| 元件数： | 1 |
| 每个元件的位元数： | 8 |
| 输出电流高，低： | 24mA，24mA |
| 电源电压： | 2 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 带卷 (TR) |
AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
DS41393B-page 14
Preliminary
2009-2012 Microchip Technology Inc.
3.5
8-Wire Touch Sensor Interface
Sensor tail pinouts can vary by manufacturer and part
number. Ensure both sensor tail pins for one sensor
axis (layer) are connected to the controller’s X-/X+ pins
and the tail pins for the other sensor axis (layer) are
connected to the controller’s Y-/Y+ pins.
The controller’s X-/X+ and Y-/Y+ pin pairs do not need
to connect to a specific sensor axis. The orientation of
controller pins X- and X+ to the two sides of a given
sensor axis is not important. Likewise, the orientation of
controller pins Y- and Y+ to the two sides of the other
sensor axis is not important.
The 8-wire sensor differs from a 4-wire sensor in that
each edge of an 8-wire sensor has a secondary
connection brought to the sensor’s tail. These
secondary connections are referred to as “sense” lines.
The controller pins associated with the sense line for an
8-wire sensor contain an ‘S’ prefix in their respective
names. For example, the SY- pin is the sense line
connection associated with the main Y- pin connection.
Consult with the sensor manufacturer’s specification to
determine which member of each edge connected pair
is the special 8-wire “sense” connection. Incorrectly
connecting the sense and excite lines to the controller
will adversely affect performance.
The controller requires that the main and “sense” tail
pin pairs for sensor edges be connected to controller
pin pairs as follows:
Y- and SY-
Y+ and SY+
X- and 5WSX-
X+ and SX+
Connections to a 8-wire touch sensor are shown in
Figure 3-4 below.
FIGURE 3-4:
8-WIRE TOUCH SENSOR INTERFACE
See
and
Section 3.9 “Noise Considerations” for important
information regarding the capacitance of the controller
schematic hardware.
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相关代理商/技术参数 |
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|---|---|
| 74LCX541MTC | 功能描述:缓冲器和线路驱动器 Octal Buff/Line Drv RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| 74LCX541MTC | 制造商:Fairchild Semiconductor Corporation 功能描述:Buffer Logic IC |
| 74LCX541MTC_08 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs |
| 74LCX541MTC_NL | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs |
| 74LCX541MTC_NL3 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:Low Voltage Octal Buffer/Line Driver with 5V Tolerant Inputs and Outputs |
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