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参数资料
| 型号： | 74LCX541MTCX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 2/10页 |
| 文件大小： | 0K |
| 描述： | IC BUFF/DVR 8BIT LOW V 20TSSOP |
| 标准包装： | 1 |
| 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-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 1211 (CN2011-ZH PDF) |
| 其它名称： | 74LCX541MTCXDKR |
AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER
DS41393B-page 12
Preliminary
2009-2012 Microchip Technology Inc.
3.2
4, 5, 8-Wire Sensor Selection
The desired sensor type of 4/8-wire or 5-wire is
hardware selectable using pin M2.
If 4/8-wire has been hardware-selected, then the
choice of 4-wire or 8-wire is software-selectable via the
TouchOptions Configuration register.
When 4/8-wire is hardware-selected, the controller
defaults to 4-wire operation. If 8-wire operation is
desired, then the TouchOptions Configuration register
must be changed.
3.3
4-Wire Touch Sensor Interface
Sensor tail pinouts can vary by manufacturer and part
number. Ensure that 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.
Connections to a 4-wire touch sensor are as follows
(See Figure 3-2).
FIGURE 3-2:
4-WIRE TOUCH SENSOR INTERFACE
Tie unused controller pins 5WSX-, SX+, SY-, and SY+
to VSS.
See
and
Section 3.9 “Noise Considerations” for important
information regarding the capacitance of the controller
schematic hardware.
TABLE 3-1:
4/8-WIRE vs. 5-WIRE
SELECTION
Type
M2 pin
4/8-wire
VSS
5-wire
VDD
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 74LCX541MTCX_NL | 功能描述:缓冲器和线路驱动器 FINISHED GOOD 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 |
| 74LCX541MTR | 功能描述:缓冲器和线路驱动器 Octal Bus Buffer 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 |
| 74LCX541MTR | 制造商:STMicroelectronics 功能描述:3-STATE OCTAL BUS BUFFER (NON-INVERTING) |
| 74LCX541SJ | 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 |
| 74LCX541SJ_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 |
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