MC74AC352 Datasheet, PDF (2/7 Pages) Motorola, Inc – DUAL 4-INPUT MULTIPLEXER

MC74AC352, MC74ACT352
FUNCTIONAL DESCRIPTION
The MC74AC352/74ACT352 is a dual 4-input multiplexer.
It selects two bits of data from up to four sources under the
control of the common Select inputs (S₀, S₁). The two 4-input
multiplexer circuits have individual active LOW Enables (E_a,
E_b) which can be used to strobe the outputs independently.
When the Enables (E_a, E_b) are HIGH, the corresponding
outputs (Z_a, Z_b) are forced HIGH.
The logic equations for the outputs are shown below:
Z_a = E_a•(I_0a•S₁•S₀+I_1a•S₁•S₀+
I_2a•S₁•S₀+I_3a•S₁•S₀)
Z_b = E_b•(I_0b•S₁•S₀+I_1b•S₁•S₀+
I_2b•S₁•S₀+I_3b•S₁•S₀)
The MC74AC352/74ACT352 can be used to move data
from a group of registers to a common output bus. The
particular register from which the date came would be
determined by the state of the Select inputs. A less obvious
application is as a function generator. The MC74AC352/
74ACT352 can generate two functions of three variables.
This is useful for implementing highly irregular random logic.
LOGIC DIAGRAM
E_a I_0a
I_1a
I_2a
I_3a
S₀
S₀
I_0b
I_1b
I_2b
I_3b E_b
Z_a
Z_b
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
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