參數(shù)資料
型號(hào): DM74LS390M
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 通用總線功能
英文描述: Dual 4-Bit Decade Counter
中文描述: LS SERIES, ASYN NEGATIVE EDGE TRIGGERED 3-BIT UP DECADE COUNTER, PDSO16
封裝: 0.150 INCH, MS-012, SOIC-16
文件頁數(shù): 2/6頁
文件大?。?/td> 58K
代理商: DM74LS390M
www.fairchildsemi.com
2
D
Function Tables
BCD Count Sequence
(Each Counter) (Note 1)
Bi-Quinary (5-2)
(Each Counter) (Note 2)
H
=
HIGH Level
L
=
LOW Level
Note 1:
Output Q
A
is connected to input B for BCD count.
Note 2:
Output Q
D
is connected to input A for Bi-quinary count.
Logic Diagram
Count
Outputs
Q
C
L
L
L
L
H
H
H
H
L
L
Q
D
L
L
L
L
L
L
L
L
H
H
Q
B
L
L
H
H
L
L
H
H
L
L
Q
A
L
H
L
H
L
H
L
H
L
H
0
1
2
3
4
5
6
7
8
9
Count
Outputs
Q
D
L
L
L
L
H
L
L
L
L
H
Q
A
L
L
L
L
L
H
H
H
H
H
Q
C
L
L
H
H
L
L
L
H
H
L
Q
B
L
H
L
H
L
L
H
L
H
L
0
1
2
3
4
5
6
7
8
9
相關(guān)PDF資料
PDF描述
DM74LS393 Dual 4-Bit Binary Counter
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