资料介绍
MM54HC149/MM74HC149
8 Line to 8 Line Priority Encoder
General Description
This priority encoder utilizes advanced silicon-gate CMOS
technology. It has the high noise immunity and low power
consumption typical of CMOS circuits, as well as the speeds
and output drive similar to LS-TTL.
This priority encoder accepts 8 input request lines, RI7±RI0,
and outputs 8 lines, RO7±RO0. Only one request output
can be low at a time. The output that is low is dependent on
the highest priority request that is low. The order of priority
is RI7 highest and RI0 lowest. Also provided is and enable
input, RQE, which when high forces all outputs high. A request
output is also provided, RQP, which goes low when
any RIn is active.
All inputs to this device are protected from damage due to
electrostatic discharge by diodes to VCC and ground.
Features
Y Propagation delay: 15 ns typical
Y Wide power supply range: 2±6V
Y Low quiescent current: 80 mA max (74HC Series)
Y Wide input noise immunity
8 Line to 8 Line Priority Encoder
General Description
This priority encoder utilizes advanced silicon-gate CMOS
technology. It has the high noise immunity and low power
consumption typical of CMOS circuits, as well as the speeds
and output drive similar to LS-TTL.
This priority encoder accepts 8 input request lines, RI7±RI0,
and outputs 8 lines, RO7±RO0. Only one request output
can be low at a time. The output that is low is dependent on
the highest priority request that is low. The order of priority
is RI7 highest and RI0 lowest. Also provided is and enable
input, RQE, which when high forces all outputs high. A request
output is also provided, RQP, which goes low when
any RIn is active.
All inputs to this device are protected from damage due to
electrostatic discharge by diodes to VCC and ground.
Features
Y Propagation delay: 15 ns typical
Y Wide power supply range: 2±6V
Y Low quiescent current: 80 mA max (74HC Series)
Y Wide input noise immunity
下载该资料的人也在下载
下载该资料的人还在阅读
更多 >
- HD74HC149 数据表 0次下载
- HD74HC149 数据表 0次下载
- 74HC139N解码器数据手册.PDF 20次下载
- 74HC149英文手册 1次下载
- 74HC149 0次下载
- TC74HC240,TC74HC244/TC74HC241 33次下载
- 74HC4040 pdf datasheet 61次下载
- 74HC4050 pdf datasheet 29次下载
- 74HC4049 pdf datasheet 28次下载
- 74HC367 pdf datasheet 22次下载
- 74HC366 pdf datasheet 13次下载
- 74HC356 pdf datasheet 8次下载
- 74HC74A pdf datasheet 37次下载
- 74hc74 pdf datasheet 155次下载
- 74hc595 pdf 298次下载
- 74hc573怎么使用 74hc573可以仿真吗 1.5w次阅读
- 74HC154的简单介绍 74hc154应用电路图分析 2.1w次阅读
- 74ls04和74hc04有什么区别_74ls04/74hc04简介 2.5w次阅读
- 电源芯片74HC4953引脚功能(74HC4953内部结构及封装) 4.1w次阅读
- 74hc138中文资料详细(74hc138引脚图及功能表_封装真值表及应用电路图) 28.3w次阅读
- 74hc165级联用法(74hc165级联电路图及程序) 4.9w次阅读
- 74hc165中文资料详细(74hc165工作原理_引脚图及功能_应用电路_逻辑图) 18.5w次阅读
- 用74HC165读8个按键状态 9867次阅读
- 74hc32引脚图及功能 4.7w次阅读
- 74hc245中文资料详细(74hc245管脚功能_工作原理方法_电气特性及应用电路) 5.5w次阅读
- 基于74HC138的简单解析 1.4w次阅读
- 74hc165和74hc164有何不同_74hc165和74hc164区别 2.9w次阅读
- 74hc595的主要功能(74hc595引脚图及功能_工作原理及电压_典型应用电路) 28.1w次阅读
- 74ls373和74hc573有什么区别 2.5w次阅读
- 74HC04和74HC14的具体区别详解 9.3w次阅读
下载排行
本周
- 1TC358743XBG评估板参考手册
- 1.36 MB | 330次下载 | 免费
- 2开关电源基础知识
- 5.73 MB | 11次下载 | 免费
- 3嵌入式linux-聊天程序设计
- 0.60 MB | 3次下载 | 免费
- 4DIY动手组装LED电子显示屏
- 0.98 MB | 3次下载 | 免费
- 5基于FPGA的C8051F单片机开发板设计
- 0.70 MB | 2次下载 | 免费
- 651单片机窗帘控制器仿真程序
- 1.93 MB | 2次下载 | 免费
- 751单片机PM2.5检测系统程序
- 0.83 MB | 2次下载 | 免费
- 8基于51单片机的RGB调色灯程序仿真
- 0.86 MB | 2次下载 | 免费
本月
- 1OrCAD10.5下载OrCAD10.5中文版软件
- 0.00 MB | 234315次下载 | 免费
- 2555集成电路应用800例(新编版)
- 0.00 MB | 33566次下载 | 免费
- 3接口电路图大全
- 未知 | 30323次下载 | 免费
- 4开关电源设计实例指南
- 未知 | 21549次下载 | 免费
- 5电气工程师手册免费下载(新编第二版pdf电子书)
- 0.00 MB | 15349次下载 | 免费
- 6数字电路基础pdf(下载)
- 未知 | 13750次下载 | 免费
- 7电子制作实例集锦 下载
- 未知 | 8113次下载 | 免费
- 8《LED驱动电路设计》 温德尔著
- 0.00 MB | 6656次下载 | 免费
总榜
- 1matlab软件下载入口
- 未知 | 935054次下载 | 免费
- 2protel99se软件下载(可英文版转中文版)
- 78.1 MB | 537798次下载 | 免费
- 3MATLAB 7.1 下载 (含软件介绍)
- 未知 | 420027次下载 | 免费
- 4OrCAD10.5下载OrCAD10.5中文版软件
- 0.00 MB | 234315次下载 | 免费
- 5Altium DXP2002下载入口
- 未知 | 233046次下载 | 免费
- 6电路仿真软件multisim 10.0免费下载
- 340992 | 191186次下载 | 免费
- 7十天学会AVR单片机与C语言视频教程 下载
- 158M | 183279次下载 | 免费
- 8proe5.0野火版下载(中文版免费下载)
- 未知 | 138040次下载 | 免费
评论
查看更多