74act16540 Fairchild Semiconductor, 74act16540 Datasheet - Page 2

• Manufacturer Part Number: 74act16540
• Description: 16-bit Inverting Buffer/line Driver With 3-state Outputs
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Functional Description
The ACT16540 contains sixteen inverting buffers with 3-
STATE standard outputs. The device is byte controlled with
each byte functioning identically, but independent of the
other. The control pins may be shorted together to obtain
full 16-bit operation. The 3-STATE outputs are controlled by
an Output Enable (OE
LOW, the outputs are in 2-state mode. When OE
the outputs are in the high impedance mode, but this does
not interfere with entering new data into the inputs.
Logic Diagram
n
) input for each byte. When OE
n
is HIGH,
n
is
2
Truth Tables
H
L
X
Z
LOW Voltage Level
High Impedance
HIGH Voltage Level
Immaterial
OE
OE
H
X
H
X
L
L
L
L
1
3
Inputs
Inputs
OE
OE
X
H
X
H
L
L
L
L
2
4
I
I
8
0
–I
H
X
X
H
X
X
–I
L
L
15
7
Outputs
Outputs
O
O
8
0
–O
Z
Z
H
Z
Z
H
–O
L
L
15
7