Datasheet

2
Functional Diagram
TRUTH TABLE
INPUTS OUTPUTS
SELECT
OUTPUT ENABLE OE Y YS2 S1 S0
XXX H ZZ
LLL L I
0
I
0
LLH L I
1
I
1
LHL L I
2
I
2
LHH L I
3
I
3
HLL L I
4
I
4
HLH L I
5
I
5
HHL L I
6
I
6
HHH L I
7
I
7
H = High logic level,L=Lowlogic level, Z = High impedance (off),
X = Irrelevant, I
0
, I
1
...I
7
= The level of the respective input
5
6
Y
Y
4
3
2
1
14
12
13
15
I
0
I
7
I
6
I
5
I
4
I
3
I
2
I
1
11
S
0
10
S
1
9
S
2
THREE-STATE
7
DISABLE OE
CHANNEL
INPUTS
DATA
SELECT
OUTPUTS
CD74AC251, CD74ACT251