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Motorola Electronic Components Datasheet

MC54F353 Datasheet

DUAL 4-INPUT MULTIPLEXER

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MC54F353 pdf
DUAL 4-INPUT MULTIPLEXER
WITH 3-STATE OUTPUTS
The MC54/74F353 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 out-
puts may be individually switched to a high impedance state with a HIGH on
the respective Output Enable (OE) inputs, allowing the outputs to interface di-
rectly with bus-oriented systems.
Inverted Version of F253
Multifunction Capability
Separate Enables for Each Multiplexer
FUNCTIONAL DESCRIPTION
The MC54/74F353 contains two identical 4-input multiplexers with 3-state
outputs. They select two bits from four sources selected by common Select
inputs (S0, S1).The 4-input multiplexers have individual Output enable (OEa,
OEb) inputs which, when HIGH, force the outputs to a high impedance (high
Z) state. The logic equations for the outputs are shown below:
Za=OEa (I0a S1 S0 +I1a S1 S0 + I2a S1 S0 + I3a S1 S0)
Zb=OEb(I0b S1 S0 + I1b S1 S0 + I2bS1S0+I3bS1S0)
If the outputs of 3-state devices are tied together, all but one device must
be in the high impedance state to avoid high currents that would exceed the
maximum ratings. Designers should ensure that Output Enable signals to
3-state devices whose outputs are tied together are designed so that there is
no overlap.
CONNECTION DIAGRAM (TOP VIEW)
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
MC54/74F353
DUAL 4-INPUT MULTIPLEXER
WITH 3-STATE OUTPUTS
16
1
J SUFFIX
CERAMIC
CASE 620-09
16
1
N SUFFIX
PLASTIC
CASE 648-08
16
1
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
MC54FXXXJ
MC74FXXXN
MC74FXXXD
Ceramic
Plastic
SOIC
LOGIC SYMBOL
2 14
7
9
VCC = PIN 16
GND = PIN 8
S1 S0
OEa
I0a
Za
I1a
I2a
I3a
I0b
I1b
Zb I2b
I3b
OEb
1
6
5
4
3
10
11
12
13
15
FAST AND LS TTL DATA
4-160


Motorola Electronic Components Datasheet

MC54F353 Datasheet

DUAL 4-INPUT MULTIPLEXER

No Preview Available !

MC54F353 pdf
MC54/74F353
FUNCTION TABLE
Select
Inputs
Data Inputs
S0
S1
I0 I1 I2
I3
X
X
XXX
X
L
L
LXX
X
L
L
HX X
X
H
L
XLX
X
H
L
XHX
X
L
H
XX L
X
L
H
XXH
X
H
H
XXX
L
H
H
XXX
H
Address inputs S0 and S1 are common to both sections.
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
(Z) = High Impedance
Output
Enable
OE
H
L
L
L
L
L
L
L
L
Output
Z
(Z)
H
L
H
L
H
L
H
L
LOGIC DIAGRAM
OEb I3b I2b I1b I0b S0 S1 I3a I2a I1a I0a OEa
Zb
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
TA
Supply Voltage
Operating Ambient Temperature Range
IOH Output Current High
IOL Output Current Low
Za
Min Typ Max Unit
54, 74
4.5
5.0
5.5
V
54 –55 25 125
°C
74 0 25 70
54, 74
–3.0 mA
54, 74
24 mA
FAST AND LS TTL DATA
4-161


Part Number MC54F353
Description DUAL 4-INPUT MULTIPLEXER
Maker Motorola
Total Page 3 Pages
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