74HC258 Просмотр технического описания (PDF) - Philips Electronics
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74HC258 Datasheet PDF : 16 Pages
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Philips Semiconductors
Quad 2-input multiplexer; 3-state; inverting
Product specification
74HC/HCT258
handbook, full pagewidth
23
1I0 1I1
56
2I0 2I1
14 13
3I0 3I1
11 10
4I0 4I1
1S
SELECTOR
15 OE
3-STATE MULTIPLEXER OUTPUTS
1Y
2Y
3Y
4Y
4
7
12
9 MBL095
Fig.4 Functional diagram.
FUNCTION TABLE
See note 1
INPUTS
OUTPUT
1I0
OE
S
nI0
nI1
nY
H
X
X
X
Z
1I1
L
H
X
L
H
L
H
X
H
L
2I0
L
L
L
X
H
L
L
H
X
L
2I1
Note
1. H = HIGH voltage level;
3I0
L = LOW voltage level;
X = don’t care;
Z = high impedance OFF-state.
3I1
4I0
4I1
OE
S
1Y
2Y
3Y
4Y
MBL096
1999 Sep 02
Fig.5 Logic diagram.
4
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