54AC153 •54ACT153
Dual 4-Input Multiplexer
General Description
The ’AC/’ACT153 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
’AC/’ACT153 can act as a function generator and generate
any two functions of three variables.
Features
nI
CC
reduced by 50%
nOutputs source/sink 24 mA
n’ACT153 has TTL-compatible inputs
nStandard Microcircuit Drawings (SMD)
—’AC153: 5962-87625
—’ACT153: 5962-87698
Logic Symbols
Pin
Names Description
I
0a
–I
3a
Side A Data Inputs
I
0b
–I
3b
Side B Data Inputs
S
0
,S
1
Common Select
Inputs
E
a
Side A Enable Input
E
b
Side B Enable Input
Z
a
Side A Output
Z
b
Side B Output
FACT®is a registered trademark of Fairchild Semiconductor Corporation.
DS100271-1
IEEE/IEC
DS100271-2
September 1998
54AC153
•
54ACT153 Dual 4-Input Multiplexer
© 1998 National Semiconductor Corporation DS100271 www.national.com
Connection Diagrams
Functional Description
The ’AC/’ACT153 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 (S
0
,S
1
). The two 4-input multi-
plexer circuits have individual active-LOW Enables (E
a
,E
b
)
which can be used to strobe the outputs indepedently. When
the Enables (E
a
,E
b
) are HIGH, the corresponding outputs
Z
a
,Z
b
) are forced LOW. The ’AC/’ACT153 is the logic imple-
mentation of a 2-pole, 4-position switch, where the position
of the switch is determined by the logic levels supplied to the
Select inputs. The logic equations for the outputs are shown
below. Z
a
=E
a
•(I
0a
•S
1
•S
0
+I
1a
•S
1
•S
0
+
I
2a
•S
1
•S
0
+I
3a
•S
1
•S
0
)
Z
b
=E
b
•(I
0b
•S
1
•S
0
+I
1b
•S
1
•S
0
+
I
2b
•S
1
•S
0
+I
3b
•S
1
•S
0
)
Truth Table
Select Inputs (a or b) Output
Inputs
S
0
S
1
E I
0
I
1
I
2
I
3
Z
XXHXXXX L
L LLL XXX L
LLLHXXX H
HLLXLXX L
HLLXHXX H
LHLXXLX L
LHLXXHX H
HHLXXXL L
HHLXXXH H
H
=
HIGH Voltage Level
L=LOW Voltage Level
X=Immaterial
Pin Assignment
for DIP and Flatpak
DS100271-3
Pin Assignment
for LCC
DS100271-4
www.national.com 2
Logic Diagram
DS100271-5
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
CC
) −0.5V to +7.0V
DC Input Diode Current (I
IK
)
V
I
=−0.5V −20 mA
V
I
=V
CC
+ 0.5V +20 mA
DC Input Voltage (V
I
) −0.5V to V
CC
+ 0.5V
DC Output Diode Current (I
OK
)
V
O
=−0.5V −20 mA
V
O
=V
CC
+ 0.5V +20 mA
DC Output Voltage (V
O
) −0.5V to V
CC
+ 0.5V
DC Output Source
or Sink Current (I
O
)±50 mA
DC V
CC
or Ground Current
per Output Pin (I
CC
or I
GND
)±50 mA
Storage Temperature (T
STG
) −65˚C to +150˚C
Junction Temperature (T
J
)
CDIP 175˚C
Recommended Operating
Conditions
Supply Voltage (V
CC
)
’AC 2.0V to 6.0V
’ACT 4.5V to 5.5V
Input Voltage (V
I
) 0VtoV
CC
Output Voltage (V
O
) 0VtoV
CC
Operating Temperature (T
A
)
54AC/ACT −55˚C to +125˚C
Minimum Input Edge Rate (∆V/∆t)
’AC Devices
V
IN
from 30%to 70%of V
CC
V
CC
@3.3V, 4.5V, 5.5V 125 mV/ns
Minimum Input Edge Rate (∆V/∆t)
’ACT Devices
V
IN
from 0.8V to 2.0V
V
CC
@4.5V, 5.5V 125 mV/ns
Note 1: Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, without
exception, to ensure that the system design is reliable over its power supply,
temperature, and output/input loading variables. National does not recom-
mend operation of FACT®circuits outside databook specifications.
DC Characteristics for ’AC Family Devices
54AC
Symbol Parameter V
CC
T
A
=Units Conditions
(V) −55˚C to +125˚C
Guaranteed
Limits
V
IH
Minimum High Level 3.0 2.1 V
OUT
=0.1V
Input Voltage 4.5 3.15 V or V
CC
− 0.1V
5.5 3.85
V
IL
Maximum Low Level 3.0 0.9 V
OUT
=0.1V
Input Voltage 4.5 1.35 V or V
CC
− 0.1V
5.5 1.65
V
OH
Minimum High Level 3.0 2.9 I
OUT
=−50 µA
Output Voltage 4.5 4.4 V
5.5 5.4 (Note 2)
V
IN
=V
IL
or V
IH
3.0 2.4 I
OH
=−12 mA
4.5 3.7 V I
OH
=−24 mA
5.5 4.7 I
OH
=−24 mA
V
OL
Maximum Low Level 3.0 0.1 I
OUT
=50 µA
Output Voltage 4.5 0.1 V
5.5 0.1 (Note 2)
V
IN
=V
IL
or V
IH
3.0 0.50 I
OL
=12 mA
4.5 0.50 V I
OL
=24 mA
5.5 0.50 I
OL
=24 mA
I
IN
Maximum Input 5.5 ±1.0 µA V
I
=V
CC
, GND
Leakage Current
I
OLD
Minimum Dynamic
Output Current (Note 3) 5.5 50 mA V
OLD
=1.65V Max
I
OHD
5.5 −50 mA V
OHD
=3.85V Min
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DC Characteristics for ’AC Family Devices (Continued)
54AC
Symbol Parameter V
CC
T
A
=Units Conditions
(V) −55˚C to +125˚C
Guaranteed
Limits
I
CC
Maximum Quiescent 5.5 80.0 µA V
IN
=V
CC
Supply Current or GND
Note 2: All outputs loaded; thresholds on input associated with output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
Note 4: IIN and ICC @3.0V are guaranteed to be less than or equal to the respective limit @5.5V VCC.
ICC for 54AC @25˚C is identical to 74AC @25˚C.
DC Characteristics for ’ACT Family Devices
54ACT
Symbol Parameter V
CC
T
A
=Units Conditions
(V) −55˚C to +125˚C
Guaranteed
Limits
V
IH
Minimum High Level 4.5 2.0 V V
OUT
=0.1V
Input Voltage 5.5 2.0 or V
CC
− 0.1V
V
IL
Maximum Low Level 4.5 0.8 V V
OUT
=0.1V
Input Voltage 5.5 0.8 or V
CC
− 0.1V
V
OH
Minimum High Level 4.5 4.4 V I
OUT
=−50 µA
Output Voltage 5.5 5.4 (Note 5)
V
IN
=V
IL
or V
IH
4.5 3.70 V I
OH
=−24 mA
5.5 4.70 I
OH
=−24 mA
V
OL
Maximum Low Level 4.5 0.1 V I
OUT
=50 µA
Output Voltage 5.5 0.1 (Note 5)
V
IN
=V
IL
or V
IH
4.5 0.50 V I
OL
=24 mA
5.5 0.50 I
OL
=24 mA
I
IN
Maximum Input 5.5 ±1.0 µA V
I
=V
CC
, GND
Leakage Current
I
CCT
Maximum 5.5 1.6 mA V
I
=V
CC
− 2.1V
I
CC
/Input
I
OLD
Minimum Dynamic 5.5 50 mA V
OLD
=1.65V Max
I
OHD
Output Current (Note 6) 5.5 −50 mA V
OHD
=3.85V Min
I
CC
Maximum Quiescent 5.5 80.0 µA V
IN
=V
CC
Supply Current or GND
Note 5: All outputs loaded; thresholds on input associated with output under test.
Note 6: Maximum test duration 2.0 ms, one output loaded at a time.
Note 7: ICC for 54ACT @25˚C is identical to 74ACT @25˚C.
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AC Electrical Characteristics
54AC
V
CC
T
A
=−55˚C
Symbol Parameter (V) to +125˚C Units
(Note 8) C
L
=50 pF
Min Max
t
PLH
Propagation Delay 3.3 1.0 19.5 ns
S
n
to Z
n
5.0 1.0 14.0
t
PHL
Propagation Delay 3.3 1.0 18.0 ns
S
n
to Z
n
5.0 1.0 13.5
t
PLH
Propagation Delay 3.3 1.0 16.5 ns
EtoZ
n
5.0 1.0 12.5
t
PHL
Propagation Delay 3.3 1.0 14.0 ns
EtoZ
n
5.0 1.0 10.0
t
PLH
Propagation Delay 3.3 1.0 16.0 ns
I
n
to Z
n
5.0 1.0 11.5
t
PHL
Propagation Delay 3.3 1.0 14.5 ns
I
n
to Z
n
5.0 1.0 10.5
Note 8: Voltage Range 3.3 is 3.3V ±0.3V
Voltage Range 5.0 is 5.0V ±0.5V
AC Electrical Characteristics
54ACT
V
CC
T
A
=−55˚C
Symbol Parameter (V) to +125˚C Units
(Note 9) C
L
=50 pF
Min Max
t
PLH
Propagation Delay 5.0 1.0 15.0 ns
S
n
to Z
n
t
PHL
Propagation Delay 5.0 1.0 14.5 ns
S
n
to Z
n
t
PLH
Propagation Delay 5.0 1.0 13.5 ns
E
n
to Z
n
t
PHL
Propagation Delay 5.0 1.0 11.5 ns
E
n
to Z
n
t
PLH
Propagation Delay 5.0 1.0 12.5 ns
I
n
to Z
n
t
PHL
Propagation Delay 5.0 1.0 12.0 ns
I
n
to Z
n
Note 9: Voltage Range 5.0 is 5.0V ±0.5V
Capacitance
Symbol Parameter Typ Units Conditions
C
IN
Input Capacitance 4.5 pF V
CC
=OPEN
C
PD
Power Dissipation 65.0 pF V
CC
=5.0V
Capacitance
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Physical Dimensions inches (millimeters) unless otherwise noted
20 Terminal Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
16-Lead Ceramic Dual-In-Line Package (D)
NS Package Number J16A
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
LIFE SUPPORT POLICY
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VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI-
CONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or sys-
tems which, (a) are intended for surgical implant into
the body, or (b) support or sustain life, and whose fail-
ure to perform when properly used in accordance
with instructions for use provided in the labeling, can
be reasonably expected to result in a significant injury
to the user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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16-Lead Ceramic Flatpak (F)
NS Package Number W16A
54AC153
•
54ACT153 Dual 4-Input Multiplexer
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
