5-1
FACT DATA
C0068C0117C0097C0108 C0052C0262C0073C0110C0112C0117C0116 C0077C0117C0108C0116C0105C0112C0108C0101C0120C0101C0114
C0119C0105C0116C0104 C0051C0262C0083C0116C0097C0116C0101 C0079C0117C0116C0112C0117C0116C0115
The MC74AC353/74ACT353 is a dual 4-input multiplexer with 3-state outputs.
It can select two bits of data from four sources using common Select inputs. The
outputs may be individually switched to a high impedance state with a HIGH on the
respective Output Enable (OE) inputs, allowing the outputs to interface directly with
bus-oriented systems.
• Inverted Version of the MC74AC253/74ACT253
• Multifunction Capability
• Separate Enables for Each Multiplexer
• Outputs Source/Sink 24 mA
• ′ACT353 Has TTL Compatible Inputs
1516 14 13 12 11 10
21 3 4 5 6 7
V
CC
9
8
OE
b
S
0
I
3b
I
2b
I
1b
I
0b
Z
b
OE
a
S
1
I
3a
I
2a
I
1a
I
0a
Z
a
GND
PIN NAMES
I
0a
–I
3a
Side A Data Inputs
I
0b
–I
3b
Side B Data Inputs
S
0
, S
1
Common Select Inputs
OE
a
Side A Enable Input
OE
b
Side B Enable Input
Z
a,
Z
b
Multiplexer Outputs
TRUTH TABLE
Select
Inputs
Data Inputs
Output
Enable
Outputs
S
0
S
1
I
0
I
1
I
2
I
3
OE Z
X X X X X X H Z
L L L X X X L H
L L H X X X L L
H L X L X X L H
H L X H X X L L
L H X X L X L H
L H X X H X L L
H H X X X L L H
H H X X X H L L
Address inputs S
0
and S
1
are common to both sections.
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
C0077C0067C0055C0052C0065C0067C0051C0053C0051
C0077C0067C0055C0052C0065C0067C0084C0051C0053C0051
DUAL 4-INPUT
MULTIPLEXER WITH
3-STATE OUTPUTS
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC SYMBOL
S
0
S
1
OE
a
I
0a
I
1a
I
2a
I
3a
Z
a
Z
b
I
0b
I
1b
I
2b
I
3b
OE
b