NSC JM54AC151S2A-RH, JM54AC151BFA-RH, JM54AC151BEA-RH, JM54AC151B2A-RH, JM38510R76201SF Datasheet
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54AC151 · 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 complementary outputs are provided.
Features
nICC reduced by 50%
nOutputs source/sink 24 mA
n'ACT151 has TTL-compatible inputs
nStandard Microcircuit Drawing (SMD)
Ð'AC151: 5962-87691
Ð'ACT151: 5962-88756
Ordering Code:
Logic Symbols
IEEE/IEC
DS100270-1
DS100270-6
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Pin |
Description |
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Names |
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I0±I7 |
Data Inputs |
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S0±S2 |
Select Inputs |
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Enable Input |
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E |
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Z |
Data Output |
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Inverted Data Output |
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Z |
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FACT® is a registered trademark of Fairchild Semiconductor Corporation.
August 1998
Multiplexer Input-8 54ACT151 · 54AC151
© 1998 National Semiconductor Corporation |
DS100270 |
www.national.com |
Connection Diagrams
Pin Assignment |
Pin Assignment |
for DIP and Flatpak |
for LCC |
DS100270-2
Truth Table
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Inputs |
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Outputs |
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E |
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S2 |
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S1 |
S0 |
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Z |
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Z |
H |
X |
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X |
X |
H |
L |
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L |
L |
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L |
L |
I0 |
I0 |
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L |
L |
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L |
H |
I1 |
I1 |
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L |
L |
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H |
L |
I2 |
I2 |
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L |
L |
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H |
H |
I3 |
I3 |
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L |
H |
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L |
L |
I4 |
I4 |
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L |
H |
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L |
H |
I5 |
I5 |
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L |
H |
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H |
L |
I6 |
I6 |
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L |
H |
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H |
H |
I7 |
I7 |
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H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
DS100270-3
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
complementary outputs are provided. The Enable input (E) is active LOW. When it is not activated, the complementary 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 + I1 · S0 · S1 · S2 +
I2 · S0 · S1 · S2 + I3 · S0 · S1 · S2 + I4 · S0 · S1 · S2 +
I5 · S0 · S1 · S2 + I6 · S0 · S1 · S2 + I7 · S0 · S1 · S2) The 'AC/'ACT151 provides the ability, in one package to select from eight sources of data or control information. By proper manipulation of the inputs, the 'AC/'ACT151 can provide any logic function of four variables and its complement.
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Logic Diagram
DS100270-4
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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