MC74LCX257M 데이터 시트보기 (PDF) - ON Semiconductor
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MC74LCX257M Datasheet PDF : 8 Pages
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MC74LCX257
VCC OE I0c I1c Zc I0d I1d Zd
16 15 14 13 12 11 10 9
12345678
S I0a I1a Za I0b I1b Zb GND
Figure 1. Pinout: 16−Lead Plastic Package
(Top View)
I0a 2
I1a 3
I0b 5
I1b 6
I0c 14
I1c 13
I0d 11
I1d 10
OE 15
S
1
PIN NAMES
Pins
Function
l0n
Source 0 Data Inputs
l1n
Source 1 Data Inputs
OE
Output Enable Input
S
Select Input
Zn
Outputs
Figure 2. Logic Diagram
TRUTH TABLE
Inputs
OE
S
l0n
l1n
Outputs
Zn
H
X
X
X
Z
L
H
X
L
L
L
H
X
H
H
L
L
L
X
L
L
L
H
X
H
H = High Voltage Level
L = Low Voltage Level
X = High or Low Voltage Level and Transitions are Acceptable
Z = High Impedance State
For ICC reasons, DO NOT FLOAT Inputs
4 Za
7 Zb
12 Zc
9 Zd
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