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 |
