MC74ACT352
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 mon Select inputs (S0, S1). The two 4-input multiplexer circuits have individual active LOW Enables (Ea, Eb) which can be used to strobe the outputs independently. When the Enables (Ea, Eb) are HIGH, the corresponding outputs (Za, Zb) are forced HIGH.
The logic equations for the outputs are shown below: Za = Ea- (I0a- S1- S0+I1a- S1- S0+
I2a- S1- S0+I3a- S1- S0) Zb = Eb- (I0b- S1- S0+I1b- S1- S0+
I2b- S1- S0+I3b- S1- S0)
The MC74AC352/74ACT352 can be used to move data from a group of registers to a mon 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
Ea I0a
I1a
I2a
I3a S0
S0...
