MM74HC251 查看數據表（PDF） - Fairchild Semiconductor
零件编号
产品描述 (功能)
比赛名单
MM74HC251 Datasheet PDF : 7 Pages
| |||
Truth Table
Inputs
Select
C
B
A
X
X
X
L
L
L
L
L
H
L
H
L
L
H
H
H
L
L
H
L
H
H
H
L
H
H
H
H = HIGH Logic Level, L = LOW Logic Level
X = Irrelevant, Z = High Impedance (off)
D0, D1. . . D7 = The level of the respective D input
Logic Diagram
Strobe
S
H
L
L
L
L
L
L
L
L
Outputs
Y
W
Z
Z
D0 D0
D1 D1
D2 D2
D3 D3
D4 D4
D5 D5
D6 D6
D7 D7
www.fairchildsemi.com
2
Share Link: 