2
Functional Diagram
Logic Diagram
TRUTH TABLE
INPUTS OUTPUTS
nA nOE nY
HLH
LLL
XHZ
H= High Voltage Level
L= Low Voltage Level
X= Don’t Care
Z= High Impedance, OFF State
1A
2
OE
2A
3A
4
OE
4A
1
4
5
9
13
12
3
6
1Y
3Y
4Y
GND = 7
V
CC
= 14
2Y
8
11
2
10
1
OE
3
OE
nY
P
n
nA
n
OE
CD54HC125, CD74HC125, CD54HCT125, CD74HCT125
