MC74ACT253MR1 View Datasheet(PDF) - ON Semiconductor
Part Name
Description
Manufacturer
MC74ACT253MR1 Datasheet PDF : 8 Pages
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MC74AC253
MC74ACT253
Dual 4ĆInput Multiplexer
with 3ĆState Outputs
The MC74AC253/74ACT253 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.
• Multifunctional Capability
• Noninverting 3-State Outputs
• Outputs Source/Sink 24 mA
• ′ACT253 Has TTL Compatible Inputs
VCC OEb S0 I3b I2b I1b I0b Zb
16 15 14 13 12 11 10 9
12345678
OEa S1 I3a I2a I1a I0a Za GND
PIN NAMES
I0a–I3a
I0b–I3b
S0, S1
OEa
OEb
Za, Zb
Side A Data Inputs
Side B Data Inputs
Common Select Inputs
Side A Output Enable Input
Side B Output Enable Input
3-State Outputs
DUAL 4-INPUT
MULTIPLEXER WITH
3-STATE OUTPUTS
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
TRUTH TABLE
Select
Inputs
Data Inputs
Output
Enable
S0 S1 I0 I1 I2 I3
OE
X
X
X
X
X
X
H
L
L
L
X
X
X
L
L
L
H
X
X
X
L
H
L
X
L
X
X
L
H
L
X
H
X
X
L
L
H
X
X
L
X
L
L
H
X
X
H
X
L
H
H
X
X
X
L
L
H
H
X
X
X
H
L
Address inputs S0 and S1 are common to both sections.
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Outputs
Z
Z
L
H
L
H
L
H
L
H
LOGIC SYMBOL
OEa I0a I1a I2a I3a I0b I1b I2b I3b OEb
S0
S1
Za
Zb
FACT DATA
5-1
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