74LV257 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
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Fabricante
74LV257 Datasheet PDF : 12 Pages
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Philips Semiconductors
Quad 2-input multiplexer (3-State)
Product specification
74LV257
LOGIC SYMBOL
2 3 5 6 11 10 14 13
1I0 11I 2I0 2I1 3I0 3I1 4I0 4I1
1
S
15
OE
1Y 2Y 3Y 4Y
4 7 9 12
SV00637
LOGIC SYMBOL (IEEE/IEC)
1
G1
15
EN
2
1 MUX
3
1
5
6
11
10
14
13
4
7
9
12
SV00638
LOGIC DIAGRAM
1I1
1Y
1I0
2I1
2Y
2I0
3I1
3Y
3I0
4I1
4Y
4I0
OE
S
SV00640
1998 May 20
FUNCTIONAL DIAGRAM
2 1I0
3 1I1
5 2I0
6 2I1
11 3I0
10 3I1
14 4I0
13 4I1
SELECTOR
1Y 4
2Y 7
3–STATE
MULTIPLEXER
OUTPUTS
3Y 9
4Y 12
S
1
FUNCTION TABLE
INPUTS
OE
S
nl0
H
X
X
L
H
X
L
H
X
L
L
L
L
L
H
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
OE
15
SV00639
OUTPUTS
nl1
nY
X
Z
L
L
H
H
X
L
X
H
3
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