74AC16244 Datasheet, PDF (2/7 Pages) Fairchild Semiconductor – 16-Bit Buffer/Line Driver with 3-STATE Outputs

Functional Description
The AC16244 and ACT16244 contain sixteen non-inverting
buffers with 3-STATE standard outputs. The device is nib-
ble (4 bits) controlled with each nibble functioning identi-
cally, but independent of the other. The control pins can be
shorted together to obtain full 16-bit operation. The
3-STATE outputs are controlled by an Output Enable (OE_n)
input for each nibble. When OE_n is LOW, the outputs are in
2-state mode. When OE_n is HIGH, the outputs are in the
high impedance mode, but this does not interfere with
entering new data into the inputs.
Truth Tables
Inputs
OE₁
I₀–I₃
L
L
L
H
H
X
Outputs
O₀–O₃
L
H
Z
Inputs
OE₂
I₄–I₇
L
L
L
H
H
X
Outputs
O₄–O₇
L
H
Z
Inputs
OE₃
L
L
H
L LOW Voltage Level
H HIGH Voltage Level
I₈–I₁₁
L
H
X
Logic Diagram
Outputs
O₈–O₁₁
L
H
Z
Inputs
OE₄
L
L
H
X Immaterial
Z High Impedance
I₁₂–I₁₅
L
H
X
Outputs
O₁₂–O₁₅
L
H
Z
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