74F158 查看數據表（PDF） - Philips Electronics
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74F158 Datasheet PDF : 10 Pages
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Philips Semiconductors
Data selectors/multiplexers
IEEE/IEC SYMBOLS, 74F157A
1
G1
15
EN
2
MUX
1
4
3
1
5
7
6
11
9
10
14
12
13
SF00219
LOGIC DIAGRAM, 74F157A
I0a I1a I0b I1b I0c I1c I0d I1d
23
56
11 10
14 13
E
S
15
1
Product specification
74F157A, 74F158A
74F158A
1
G1
15
EN
2
MUX
1
4
3
1
5
7
6
11
9
10
14
12
13
SF00220
74F158A
I0a I1a I0b I1b I0c I1c I0d I1d
23
56
11 10
14 13
E
S
15
1
4
7
9
12
Ya
Yb
Yc
Yd
VCC = Pin 16
GND = Pin 8
FUNCTION TABLE, 74F157A
INPUTS
E
S
I0n
I1n
H
X
X
X
L
H
X
L
L
H
X
H
L
L
L
X
L
L
H
X
H = High voltage level
L = Low voltage level
X = Don’t care
SF00225
OUTPUT
Yn
L
L
H
L
H
4
7
9
12
Ya
Yb
Yc
Yd
VCC = Pin 16
GND = Pin 8
74F158A
INPUTS
E
S
I0n
I1n
H
X
X
X
L
L
L
X
L
L
H
X
L
H
X
L
L
H
X
H
H = High voltage level
L = Low voltage level
X = Don’t care
SF00226
OUTPUT
Yn
H
H
L
H
L
1996 Mar 12
3
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