74AHC257 Philips Semiconductors, 74AHC257 Datasheet - Page 3

• Manufacturer Part Number: 74AHC257
• Description: Quad 2-input multiplexer; 3-state
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FUNCTION TABLE
See note 1.
Note
1. H = HIGH voltage level;
ORDERING INFORMATION
PINNING
2000 Apr 03
74AHC257D
74AHC257PW
74AHCT257D
74AHCT257PW
1
2, 5, 11 and 14
3, 6, 10 and 13
4, 7, 9 and 12
8
15
16
Quad 2-input multiplexer; 3-state
TYPE NUMBER
L = LOW voltage level;
X = don’t care;
Z = high impedance OFF-state.
PIN
OE
H
L
L
L
L
S
1I
1I
1Y to 4Y
GND
OE
V
CC
0
1
TEMPERATURE
to 4I
to 4I
40 to +125 C
SYMBOL
RANGE
0
1
S
X
H
H
L
L
INPUT
common data select input
data inputs from source 0
data inputs from source 1
multiplexer outputs
ground (0 V)
output enable input (active LOW)
DC supply voltage
PINS
16
16
16
16
nI
X
X
X
H
L
3
0
PACKAGES
PACKAGE
TSSOP
TSSOP
SO
SO
DESCRIPTION
nI
X
H
X
X
L
1
MATERIAL
plastic
plastic
plastic
plastic
74AHCT257
Product specification
74AHC257;
OUTPUT
SOT109-1
SOT403-1
SOT109-1
SOT403-1
nY
H
H
Z
L
L
CODE