Motorola MC74ACT153D, MC74ACT153N, MC74AC153N Datasheet
5-1
FACT DATA
The MC74AC153/74ACT153 is a high-speed dual 4-input multiplexer with
common select inputs and individual enable inputs for each section. It can select
two lines of data from four sources. The two buffered outputs present data in the
true (non-inverted) form. In addition to multiplexer operation, the MC74AC153/
74ACT153 can act as a function generator and generate any two functions of
three variables.
• Outputs Source/Sink 24 mA
• ′ACT153 Has TTL Compatible Inputs
1516 14 13 12 11 10
21 3 4 5 6 7
V
CC
9
8
E
bS0I3bI2bI1bI0bZb
E
aS1I3aI2aI1aI0aZa
GND
PIN NAMES
I0a–I
3a
Side A Data Inputs
I0b–I
3b
Side B Data Inputs
S0, S1Common Select Inputs
E
a
Side A Enable Input
E
b
Side B Enable Input
Z
a
Side A Output
Z
b
Side B Output
TRUTH TABLE
Select
Inputs
Inputs (a or b) Output
S0 S1 E I0 I1I2I
3
Z
X X H X X X X L
L L L L X X X L
L L L H X X X H
H L L X L X X L
H L L X H X X H
L H L X X L X L
L H L X X H X H
H H L X X X L L
H H L X X X H H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
DUAL 4-INPUT
MULTIPLEXER
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC SYMBOL
S
0
S
1
EaI0aI1aI2aI
3a
Z
a
Z
b
I0bI1bI2bI3bE
b
MC74AC153 MC74ACT153
5-2
FACT DATA
FUNCTIONAL DESCRIPTION
The MC74AC153/74ACT153 is a dual 4-input multiplexer.
It can select 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,Eb
) which can be used to strobe the outputs
independently. When the Enables (E
a
, Eb) are HIGH, the
corresponding outputs (Za, Zb) are forced LOW. The
MC74AC153/74ACT153 is the logic implementation of a
2-pole, 4-position switch, where the position of the switch is
determined by the logic levels supplied to the two Select
inputs. The logic equations for the outputs are shown below.
Za = E
a
•(I0a•S1•S
0+I1a•S1
•S
0+I2a•S1
•S
0+I3a
•S1•S
0
)
Zb = E
b
•(I0b•S1•S
0+I1b•S1
•S
0+I2b•S1
•S
0+I3b
•S1•S
0
)
E
aI0a
I
3a
S
1
S
0
I
0b
I
1b
I
2b
I3bE
b
Z
a
Z
b
LOGIC DIAGRAM
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
I
1a
I
2a
MAXIMUM RATINGS*
Symbol Parameter Value Unit
V
CC
DC Supply Voltage (Referenced to GND) –0.5 to +7.0 V
V
in
DC Input Voltage (Referenced to GND) –0.5 to VCC +0.5 V
V
out
DC Output Voltage (Referenced to GND) –0.5 to VCC +0.5 V
I
in
DC Input Current, per Pin ±20 mA
I
out
DC Output Sink/Source Current, per Pin ±50 mA
I
CC
DC VCC or GND Current per Output Pin ±50 mA
T
stg
Storage Temperature –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.
Loading...