cd4511管腳圖
cd4511管腳功能介紹如下：
LE：鎖定控制端，當(dāng)LE=0時，允許譯碼輸出。 LE=1時譯碼器是鎖定保持狀態(tài)，cd4511輸出被保持在LE=0時的數(shù)值。
A1、A2、A3、A4、為8421BCD碼輸入端。
a、b、c、d、e、f、g：為譯碼輸出端，輸出為高電平1有效。
BI：4腳是消隱輸入控制端，當(dāng)BI=0 時，不管其它輸入端狀態(tài)如何，七段數(shù)碼管均處于熄滅（消隱）狀態(tài)，不顯示數(shù)字。
LT：3腳是測試輸入端，當(dāng)BI=1，LT=0 時，譯碼輸出全為1，不管輸入 DCBA 狀態(tài)如何，七段均發(fā)亮，顯示“8”。它主要用來檢測數(shù)碼管是否正常。
cd4511引腳圖
8421BCD碼對應(yīng)的顯示圖 ：
CD4511與七段共陰極數(shù)碼管連接電路圖 ：
cd4511電路應(yīng)用
輸 入 |
輸 出 |
|||||||||||||
|
LE |
BI |
LI |
D |
C |
B |
A |
a |
b |
c |
d |
e |
f |
g |
顯示 |
|
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 |
消隱 |
|
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 |
消隱 |
|
0 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隱 |
|
0 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隱 |
|
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隱 |
|
0 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
消隱 |
|
0 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
|
0 |
消隱 |
|
1 |
1 |
1 |
X |
X |
X |
X |
鎖 存 |
鎖存 |
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cd4511 pdf 資料下載：http://www.alldatasheet.com/view.jsp?Searchword=cd4511