74ACT16244 Datasheet, PDF (2/7 Pages) STMicroelectronics – 16-BIT BUS BUFFER WITH 3 STATE OUTPUTS NON INVERTED

Functional Description
The ACT16244 contains sixteen non-inverting buffers with
3-STATE standard outputs. The device is nibble (4 bits)
controlled with each nibble functioning identically, but inde-
pendent of the other. The control pins can be shorted
together to obtain full 16-bit operation. The 3-STATE out-
puts 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
L
I₀–I₃
L
L
H
H
X
Outputs
O₀–O₃
L
H
Z
Inputs
OE₂
L
I₄–I₇
L
L
H
H
X
Outputs
O₄–O₇
L
H
Z
Inputs
OE₃
L
I₈–I₁₁
L
L
H
H
X
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Outputs
O₈–O₁₁
L
H
Z
OE₄
L
L
H
Inputs
I₁₂–I₁₅
L
H
X
Outputs
O₁₂–O₁₅
L
H
Z
Logic Diagram
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