74HCT257N NXP Semiconductors, 74HCT257N Datasheet - Page 4

• Manufacturer Part Number: 74HCT257N
• Description: IC, 74HCT CMOS, 74HCT257, DIP16, 5V
• Manufacturer: NXP Semiconductors

Specifications of 74HCT257N

• Logic Type: Multiplexer
• No. Of Outputs: 4
• Supply Voltage Range: 4.5V To 5.5V
• Logic Case Style: DIP
• No. Of Pins: 16
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC (18-Jun-2010)
• Package: RoHS Compliant
• Base Number: 74
• Rohs Compliant: Yes

Philips Semiconductors
1998 Sep 30
Quad 2-input multiplexer; 3-state
15
1
S
OE
2
1I 0
Fig.4 Functional diagram.
1Y
4
3-STATE MULTIPLEXER OUTPUTS
3
1I 1
Fig.5 Logic diagram.
5
2I 0
SELECTOR
2Y
7
6
2I 1
11
3I 0
3Y
12
10
3I 1
14
4I 0
4Y
9
13
4I 1
MGR280
4
FUNCTION TABLE
Notes
1. H = HIGH voltage level
OE
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
H
L
L
L
L
H
H
S
X
L
L
INPUTS
nI
X
X
X
H
L
0
74HC/HCT257
nI
X
H
X
X
Product specification
L
1
OUTPUT
nY
H
H
Z
L
L