74LCX16240 Fairchild Semiconductor, 74LCX16240 Datasheet - Page 2

• Manufacturer Part Number: 74LCX16240
• Description: Low Voltage 16-Bit Inverting Buffer/Line Driver with 5V Tolerant Inputs/Outputs
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Truth Tables
H
L
X
Z
Functional Description
The LCX16240 contains sixteen inverting buffers with 3-
STATE standard outputs. The device is nibble (4 bits) con-
trolled with each nibble functioning identically, but indepen-
dent of the other. The control pins may be shorted together
to obtain full 16-bit operation. The 3-STATE outputs are
Logic Diagram
LOW Voltage Level
High Impedance
HIGH Voltage Level
Immaterial
OE
OE
H
H
L
L
L
L
1
2
Inputs
Inputs
I
I
0
4
H
X
H
X
–I
L
–I
L
3
7
Outputs
Outputs
O
O
0
4
H
H
Z
Z
–O
L
–O
L
3
7
2
controlled by an Output Enable (OE
When OE
OE
but this does not interfere with entering new data into the
inputs.
n
is HIGH, the outputs are in the high impedance mode,
OE
OE
H
H
L
L
L
L
n
3
4
is LOW, the outputs are in 2-state mode. When
Inputs
Inputs
I
I
12
8
–I
H
X
H
X
L
–I
L
11
15
n
) input for each nibble.
O
Outputs
Outputs
O
12
8
–O
H
Z
H
Z
L
–O
L
11
15