cd4511管脚图
cd4511管脚功能介绍如下：
LE：锁定控制端，当LE=0时，允许译码输出。 LE=1时译码器是锁定保持状态，cd4511输出被保持在LE=0时的数值。
A1、A2、A3、A4、为8421BCD码输入端。
a、b、c、d、e、f、g：为译码输出端，输出为高电平1有效。
BI：4脚是消隐输入控制端，当BI=0 时，不管其它输入端状态如何，七段数码管均处于熄灭（消隐）状态，不显示数字。
LT：3脚是测试输入端，当BI=1，LT=0 时，译码输出全为1，不管输入 DCBA 状态如何，七段均发亮，显示“8”。它主要用来检测数码管是否正常。
cd4511引脚图
8421BCD码对应的显示图 ：
CD4511与七段共阴极数码管连接电路图 ：
cd4511电路应用
输 入 |
输 出 |
|||||||||||||
|
LE |
BI |
LI |
D |
C |
B |
A |
a |
b |
c |
d |
e |
f |
g |
显示 |
|
X |
X |
0 |
X |
X |
X |
X |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
8 |
|
X |
0 |
1 |
X |
X |
X |
X |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隐 |
|
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
|
0 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
|
0 |
1 |
1 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
1 |
0 |
1 |
2 |
|
0 |
1 |
1 |
0 |
0 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
3 |
|
0 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
4 |
|
0 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
1 |
0 |
1 |
1 |
5 |
|
0 |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
1 |
1 |
6 |
|
0 |
1 |
1 |
0 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
7 |
|
0 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
8 |
|
0 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
9 |
|
0 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隐 |
|
0 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隐 |
|
0 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隐 |
|
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隐 |
|
0 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隐 |
|
0 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
|
0 |
消隐 |
|
1 |
1 |
1 |
X |
X |
X |
X |
锁 存 |
锁存 |
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cd4511 pdf 资料下载：http://www.alldatasheet.com/view.jsp?Searchword=cd4511