MC74AC151 Datasheet, PDF (2/6 Pages) ON Semiconductor – 1−of−8 Decoder/Demultiplexer

MC74AC151 MC74ACT151
FUNCTIONAL DESCRIPTION
The MC74AC151/74ACT151 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 MC74AC151/74ACT151 provides the ability, in one
package, to select from eight sources of data or control
information. By proper manipulation of the inputs, the
MC74AC151/74ACT151 can provide any logic function of four
variables and its complement.
LOGIC DIAGRAM
I0
I1
I2
I3
I4
I5
I6
I7
S2
S1
S0
E
Please note that this diagram is provided
only for the understanding of logic
operations and should not be used to
estimate propagation delays.
ZZ
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
VCC
Vin
Vout
Iin
Iout
ICC
Tstg
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
DC Output Sink/Source Current, per Pin
DC VCC or GND Current per Output Pin
Storage Temperature
–0.5 to +7.0
V
–0.5 to VCC +0.5
V
–0.5 to VCC +0.5
V
±20
mA
±50
mA
±50
mA
–65 to +150
°C
* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended
Operating Conditions.
FACT DATA
5-2