
cd4511管腳圖
cd4511管腳功能介紹如下:
LE:鎖定控制端,當LE=0時,允許譯碼輸出。 LE=1時譯碼器是鎖定保持狀態,cd4511輸出被保持在LE=0時的數值。
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BI=0 時,不管其它輸入端狀態如何,七段數碼管均處于熄滅(消隱)狀態,不顯示數字。
LT:3腳是測試輸入端,當BI=1,LT=0 時,譯碼輸出全為1,不管輸入 DCBA 狀態如何,七段均發亮,顯示“8”。它主要用來檢測數碼管是否正常。
8421BCD碼對應的顯示圖 :
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 |
cd4511 pdf 資料下載:http://www.alldatasheet.com/view.jsp?Searchword=cd4511