74ls48引脚/管脚功能电路图
作者:dolphin
时间:2011-06-27
下面是 [74ls48引脚/管脚功能电路图]的电路图
(责任编辑:电路图)
74ls48引脚/管脚功能电路图
74LS48芯片是一种常用的七段数码管译码器驱动器,常用在各种数字电路和单片机系统的显示系统中,下面我就给大家介绍一下这个元件的一些参数与应用技术等资料。
74ls48引脚图
74ls48引脚功能表—七段译码驱动器功能表 | ||||||||||||
十进数 或功能 | 输入 | BI/RBO | 输出 | 备注 | ||||||||
LT | RBI | D C B A | a | b | c | d | e | f | g | |||
0 | H | H | 0 0 0 0 | H | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 |
1 | H | x | 0 0 0 1 | H | 0 | 1 | 1 | 0 | 0 | 0 | 0 | |
2 | H | x | 0 0 1 0 | H | 1 | 1 | 0 | 1 | 1 | 0 | 1 | |
3 | H | x | 0 0 1 1 | H | 1 | 1 | 1 | 1 | 0 | 0 | 1 | |
4 | H | x | 0 1 0 0 | H | 0 | 1 | 1 | 0 | 0 | 1 | 1 | |
5 | H | x | 0 1 0 1 | H | 1 | 0 | 1 | 1 | 0 | 1 | 1 | |
6 | H | x | 0 1 1 0 | H | 0 | 0 | 1 | 1 | 1 | 1 | 1 | |
7 | H | x | 0 1 1 1 | H | 1 | 1 | 1 | 0 | 0 | 0 | 0 | |
8 | H | x | 1 0 0 0 | H | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
9 | H | x | 1 0 0 1 | H | 1 | 1 | 1 | 0 | 0 | 1 | 1 | |
10 | H | x | 1 0 1 0 | H | 0 | 0 | 0 | 1 | 1 | 0 | 1 | |
11 | H | x | 1 0 1 1 | H | 0 | 0 | 1 | 1 | 0 | 0 | 1 | |
12 | H | x | 1 1 0 0 | H | 0 | 1 | 0 | 0 | 0 | 1 | 1 | |
13 | H | x | 1 1 0 1 | H | 1 | 0 | 0 | 1 | 0 | 1 | 1 | |
14 | H | x | 1 1 1 0 | H | 0 | 0 | 0 | 1 | 1 | 1 | 1 | |
15 | H | x | 1 1 1 1 | H | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
BI | x | x | x x x x | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
RBI | H | L | 0 0 0 0 | L | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
LT | L | x | x x x x | H | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 |
加入微信
获取电子行业最新资讯
搜索微信公众号:EEPW
或用微信扫描左侧二维码