54AC151 Datasheet | National Semiconductor

.. - 54ACT151 8-Input Multiplexer August 1998 - 54ACT151 8-Input Multiplexer General Description The ’AC/’ACT151 is a high-speed 8-input digital multiplexer. It provides, in one package, the ability to select one line of data from up to eight sources. The ’AC/’ACT151 can be used as a universal function generator to generate any logic function of four variables. Both true and plementary outputs are provided. Features n n n n ICC reduced by 50% Outputs source/sink 24 m A ’ACT151 has TTL-patible inputs Standard Microcircuit Drawing (SMD) - ’AC151: 5962-87691 - ’ACT151: 5962-88756 Ordering Code: Logic Symbols IEEE/IEC DS100270-1 DS100270-6 Pin Names I0- I7 S0- S2 E Z Z Description Data Inputs Select Inputs Enable Input Data Output Inverted Data Output FACT ® is a registered trademark of Fairchild Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100270 .national. Connection Diagrams Pin Assignment for DIP and Flatpak Pin Assignment for LCC DS100270-2 DS100270-3 Truth Table Inputs E H L L L L L L L L S2 X L L L L H H H H S1 X L L H H L L H H S0 X L H L H L H L H Z H I0 I1 I2 I3 I4 I5 I6 I7 Outputs Z L I0 I1 I2 I3 I4 I5 I6 I7 Functional Description The ’AC/’ACT151 is a logic implementation of a single pole, 8-position switch with the switch position controlled by the state of three Select inputs, S0, S1, S2. Both true and plementary outputs are provided. The Enable input (E) is active LOW. When it is not activated, the plementary output is HIGH and the true output is LOW regardless of all other inputs. The logic function provided at the output is: Z = E - (I0 - S0 - S1 - S2 +...