74lv257 NXP Semiconductors, 74lv257 Datasheet - Page 3

• Manufacturer Part Number: 74lv257
• Description: Quad 2-input Multiplexer 3-state
• Manufacturer: NXP Semiconductors

Philips Semiconductors
LOGIC SYMBOL
LOGIC SYMBOL (IEEE/IEC)
LOGIC DIAGRAM
1998 May 20
Quad 2-input multiplexer (3-State)
1I0
2I
3I
4I
OE
1I
2I
3I
4I
S
0
0
0
1
1
1
1
1
15
3
1
15
2
5
6
11
10
14
13
S
OE
1I
2
0
1
G1
EN
1
11
3
I
2I
1Y
5
4
MUX
0
2I
2Y
6
7
1
11
3I
3Y
9
0
10
12
3I
4Y
1
SV00638
14
4I
0
SV00637
12
13
4I
4
7
9
SV00640
1
1Y
2Y
3Y
4Y
3
H =
L =
X =
Z =
FUNCTIONAL DIAGRAM
FUNCTION TABLE
NOTES:
OE
H
L
L
L
L
HIGH voltage level
LOW voltage level
don’t care
high impedance OFF-state
11
10
14
13
2
3
5
6
1I
1I
2I
2I
3I
3I
4I
4I
0
1
0
1
0
1
0
1
S
X
H
H
L
L
SELECTOR
INPUTS
S
1
nl
X
X
X
H
L
0
MULTIPLEXER
OUTPUTS
3–STATE
OE
15
nl
X
H
X
X
L
Product specification
1
74LV257
SV00639
1Y
2Y
3Y
4Y
OUTPUTS
12
4
7
9
nY
H
H
Z
L
L