74LCXZ16240 Datasheet, PDF (2/8 Pages) Fairchild Semiconductor – Low Voltage 16-Bit Inverting Buffer/Line Driver with 5V Tolerant Inputs/Outputs (Preliminary)

Truth Tables
Inputs
OE₁
L
I₀–I₃
L
L
H
H
X
Inputs
OE₂
L
I₄–I₇
L
L
H
H
X
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Outputs
O₀–O₃
H
L
Z
Outputs
O₄–O₇
H
L
Z
Preliminary
Inputs
OE₃
L
I₈–I₁₁
L
L
H
H
X
OE₄
L
L
H
Inputs
I₁₂–I₁₅
L
H
X
Outputs
O₈–O₁₁
H
L
Z
Outputs
O₁₂–O₁₅
H
L
Z
Functional Description
The LCXZ16240 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
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.
Logic Diagram
www.fairchildsemi.com
2