TL/F/9927
54AC/74AC151 #54ACT/74ACT151 8-Input Multiplexer
February 1993
54AC/74AC151 #54ACT/74ACT151
8-Input Multiplexer
General Description
The ’AC/’ACT151 is a high-speed 8-input digital multiplexer.
It provides, in one package, the ability to select one line of
data from up to eight sources. The ’AC/’ACT151 can be
used as a universal function generator to generate any logic
function of four variables. Both true and complementary out-
puts are provided.
Features
YICC reduced by 50%
YOutputs source/sink 24 mA
Y’ACT151 has TTL-compatible inputs
YStandard Military Drawing (SMD)
Ð’AC151: 5962-87691
Ð’ACT151: 5962-88756
Logic Symbols Connection Diagrams
TL/F/99271
IEEE/IEC
TL/F/99276
Pin Assignment
for DIP, Flatpak and SOIC
TL/F/99272
Pin Assignment
for LCC
TL/F/99273
Pin Names Description
I0–I7Data Inputs
S0–S2Select Inputs
EEnable Input
Z Data Output
ZInverted Data Output
Truth Table
Inputs Outputs
E S2S1S0Z Z
HXXXHL
LLLLI
0I
0
LL LHI
1I
1
LLHLI
2I
2
LLHHI
3I
3
LH L LI
4I
4
LHLHI
5I
5
LHH LI
6I
6
LHHHI
7I
7
H
e
HIGH Voltage Level
LeLOW Voltage Level
XeImmaterial
FACTTM is a trademark of National Semiconductor Corporation.
C1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.
Functional Description
The ’AC/’ACT151 is a logic implementation of a single pole,
8-position switch with the switch position controlled by the
state of three Select inputs, S0,S
1
,S
2
. Both true and com-
plementary outputs are provided. The Enable input (E)is
active LOW. When it is not activated, the complementary
output is HIGH and the true output is LOW regardless of all
other inputs. The logic function provided at the output is:
ZeE#(I0#S0#S1#S2aI1#S0#S1#S2a
I2#S0#S1#S2aI3#S0#S1#S2a
I4#S0#S1#S2aI5#S0#S1#S2a
I6#S0#S1#S2aI7#S0#S1#S2)
The ’AC/’ACT151 provides the ability, in one package to
select from eight sources of data or control information. By
proper manipulation of the inputs, the ’AC/’ACT151 can
provide any logic function of four variables and its comple-
ment.
Logic Diagram
TL/F/99274
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
2
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 (VCC)b0.5V to a7.0V
DC Input Diode Current (IIK)
VIeb
0.5V b20 mA
VIeVCC a0.5V a20 mA
DC Input Voltage (VI)b0.5V to VCC a0.5V
DC Output Diode Current (IOK)
VOeb
0.5V b20 mA
VOeVCC a0.5V a20 mA
DC Output Voltage (VO)b0.5V to VCC a0.5V
DC Output Source
or Sink Current (IO)g50 mA
DC VCC or Ground Current
per Output Pin (ICC or IGND)g50 mA
Storage Temperature (TSTG)b65§Ctoa
150§C
Junction Temperature (TJ)
CDIP 175§C
PDIP 140§C
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 FACTTM circuits outside databook specifications.
Recommended Operating
Conditions
Supply Voltage (VCC)
’AC 2.0V to 6.0V
’ACT 4.5V to 5.5V
Input Voltage (VI) 0VtoV
CC
Output Voltage (VO) 0VtoV
CC
Operating Temperature (TA)
74AC/ACT b40§Ctoa
85§C
54AC/ACT b55§Ctoa
125§C
Minimum Input Edge Rate (DV/Dt)
’AC Devices
VIN from 30% to 70% of VCC
VCC @3.3V, 4.5V, 5.5V 125 mV/ns
Minimum Input Edge Rate (DV/Dt)
’ACT Devices
VIN from 0.8V to 2.0V
VCC @4.5V, 5.5V 125 mV/ns
DC Characteristics for ’AC Family Devices
74AC 54AC 74AC
Symbol Parameter VCC TAea
25§CTAeTAeUnits Conditions
(V) b55§Ctoa
125§Cb40§Ctoa
85§C
Typ Guaranteed Limits
VIH Minimum High Level 3.0 1.5 2.1 2.1 2.1 VOUT e0.1V
Input Voltage 4.5 2.25 3.15 3.15 3.15 V or VCC b0.1V
5.5 2.75 3.85 3.85 3.85
VIL Maximum Low Level 3.0 1.5 0.9 0.9 0.9 VOUT e0.1V
Input Voltage 4.5 2.25 1.35 1.35 1.35 V or VCC b0.1V
5.5 2.75 1.65 1.65 1.65
VOH Minimum High Level 3.0 2.99 2.9 2.9 2.9 IOUT eb
50 mA
Output Voltage 4.5 4.49 4.4 4.4 4.4 V
5.5 5.49 5.4 5.4 5.4
*VIN eVIL or VIH
3.0 2.56 2.4 2.46 b12 mA
4.5 3.86 3.7 3.76 V IOH b24 mA
5.5 4.86 4.7 4.76 b24 mA
VOL Maximum Low Level 3.0 0.002 0.1 0.1 0.1 IOUT e50 mA
Output Voltage 4.5 0.001 0.1 0.1 0.1 V
5.5 0.001 0.1 0.1 0.1
*VIN eVIL or VIH
3.0 0.36 0.50 0.44 12 mA
4.5 0.36 0.50 0.44 V IOL 24 mA
5.5 0.36 0.50 0.44 24 mA
IIN Maximum Input 5.5 g0.1 g1.0 g1.0 mAVIeVCC, GND
Leakage Current
*All outputs loaded; thresholds on input associated with output under test.
3
DC Characteristics for ’AC Family Devices (Continued)
74AC 54AC 74AC
Symbol Parameter VCC TAeTAeTAeUnits Conditions
(V) a25§Cb55§Ctoa
125§Cb40§Ctoa
85§C
Typ Guaranteed Limits
IOLD ²Minimum Dynamic 5.5 50 75 mA VOLD e1.65V Max
IOHD Output Current 5.5 b50 b75 mA VOHD e3.85V Min
ICC Maximum Quiescent 5.5 4.0 80.0 40.0 mAVIN eVCC
Supply Current or GND
²Maximum test duration 2.0 ms, one output loaded at a time.
Note: 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
74ACT 54ACT 74ACT
Symbol Parameter VCC TAeTAeTAeUnits Conditions
(V) a25§Cb55§Ctoa
125§Cb40§Ctoa
85§C
Typ Guaranteed Limits
VIH Minimum High Level 4.5 1.5 2.0 2.0 2.0 VVOUT e0.1V
Input Voltage 5.5 1.5 2.0 2.0 2.0 or VCC b0.1V
VIL Maximum Low Level 4.5 1.5 0.8 0.8 0.8 VVOUT e0.1V
Input Voltage 5.5 1.5 0.8 0.8 0.8 or VCC b0.1V
VOH Minimum High Level 4.5 4.49 4.4 4.4 4.4 VIOUT eb
50 mA
Output Voltage 5.5 5.49 5.4 5.4 5.4
*VIN eVIL or VIH
4.5 3.86 3.70 3.76 VI
OH
b24 mA
5.5 4.86 4.70 4.76 b24 mA
VOL Maximum Low Level 4.5 0.001 0.1 0.1 0.1 VIOUT e50 mA
Output Voltage 5.5 0.001 0.1 0.1 0.1
*VIN eVIL or VIH
4.5 0.36 0.50 0.44 VI
OL
24 mA
5.5 0.36 0.50 0.44 24 mA
IIN Maximum Input 5.5 g0.1 g1.0 g1.0 mAVIeVCC, GND
Leakage Current
ICCT Maximum 5.5 0.6 1.6 1.5 mA VIeVCC b2.1V
ICC/Input
IOLD ²Minimum Dynamic 5.5 50 75 mA VOLD e1.65V Max
IOHD Output Current 5.5 b50 b75 mA VOHD e3.85V Min
ICC Maximum Quiescent 5.5 4.0 80.0 40.0 mAVIN eVCC
Supply Current or GND
*All outputs loaded; thresholds on input associated with output under test.
²Maximum test duration 2.0 ms, one output loaded at a time.
Note: ICC for 54ACT @25§C is identical to 74ACT @25§C.
4
AC Electrical Characteristics
74AC 54AC 74AC
VCC*TAea
25§CTAeb
55§CT
A
eb
40§C
Symbol Parameter (V) CLe50 pF to a125§Cto
a
85§C Units
CLe50 pF CLe50 pF
Min Typ Max Min Max Min Max
tPLH Propagation Delay 3.3 3.0 11.5 18.0 1.0 22.0 3.0 20.0 ns
SntoZorZ 5.0 2.5 8.5 13.0 1.0 15.5 2.0 15.0
tPHL Propagation Delay 3.3 2.5 12.0 18.0 1.0 22.0 2.5 20.0 ns
SntoZorZ 5.0 2.0 8.5 13.0 1.0 15.5 1.5 15.0
tPLH Propagation Delay 3.3 2.5 8.0 13.0 1.0 15.5 2.0 14.0 ns
EtoZorZ 5.0 2.0 6.0 10.0 1.0 12.0 1.5 11.0
tPHL Propagation Delay 3.3 1.5 8.5 13.0 1.0 15.5 1.5 14.0 ns
EtoZorZ 5.0 1.5 6.5 10.0 1.0 12.0 1.5 11.0
tPLH Propagation Delay 3.3 2.5 9.5 14.0 1.0 16.0 2.0 15.5 ns
IntoZorZ 5.0 1.5 7.0 10.5 1.0 12.0 1.5 11.0
tPHL Propagation Delay 3.3 2.5 9.5 15.0 1.0 18.0 2.0 16.0 ns
IntoZorZ 5.0 1.5 7.0 11.0 1.0 13.0 1.5 12.0
*Voltage Range 3.3 is 3.3V g0.3V
Voltage Range 5.0 is 5.0V g0.5V
AC Electrical Characteristics
74ACT 54ACT 74ACT
VCC*TAea
25§CTAeb
55§CT
A
eb
40§C
Symbol Parameter (V) CLe50 pF to a125§Cto
a
85§C Units
CLe50 pF CLe50 pF
Min Typ Max Min Max Min Max
tPLH Propagation Delay 5.0 3.5 12.5 15.5 1.0 19.5 3.0 17.0 ns
Snto Z
tPHL Propagation Delay 5.0 3.5 12.5 15.5 1.0 20.0 3.0 16.5 ns
Snto Z
tPLH Propagation Delay 5.0 3.5 12.5 15.0 1.0 19.5 3.0 16.5 ns
Snto Z
tPHL Propagation Delay 5.0 4.0 12.5 16.5 1.0 20.0 3.5 18.5 ns
Snto Z
tPLH Propagation Delay 5.0 2.5 6.0 9.5 1.0 12.0 2.5 10.0 ns
Eto Z
tPHL Propagation Delay 5.0 2.5 6.0 9.0 1.0 12.5 2.5 10.0 ns
Eto Z
tPLH Propagation Delay 5.0 2.5 6.0 8.5 1.0 12.0 2.5 9.5 ns
Eto Z
tPHL Propagation Delay 5.0 3.0 6.5 10.0 1.0 12.5 2.5 10.5 ns
Eto Z
tPLH Propagation Delay 5.0 3.5 7.5 11.5 1.0 15.0 3.0 12.5 ns
Into Z
tPHL Propagation Delay 5.0 3.5 8.0 12.0 1.0 16.0 3.0 13.5 ns
Into Z
tPLH Propagation Delay 5.0 3.5 8.0 12.0 1.0 15.0 3.0 13.0 ns
Into Z
tPHL Propagation Delay 5.0 4.0 8.0 12.5 1.0 16.0 3.0 14.0 ns
Into Z
*Voltage Range 5.0 is 5.0V g0.5V
5
Capacitance
Symbol Parameter Typ Units Conditions
CIN Input Capacitance 4.5 pF VCC eOPEN
CPD Power Dissipation 70.0 pF VCC e5.0V
Capacitance
Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows:
74ACT 151 P C QR
Temperature Range Family Special Variations
74AC eCommercial XeDevices shipped in 13×reels
54AC eMilitary QR eCommercial grade device with
74ACT eCommercial TTL-Compatible burn-in
54ACT eMilitary TTL-Compatible QB eMilitary grade device with
environmental and burn-in
Device Type processing shipped in tubes
Package Code Temperature Range
PePlastic DIP CeCommercial (b40§Ctoa
85§C)
DeCeramic DIP MeMilitary (b55§Ctoa
125§C)
FeFlatpak
LeLeadless Ceramic Chip Carrier (LCC)
SeSmall Outline (SOIC)
6
7
Physical Dimensions inches (millimeters)
20 Terminal Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
16 Lead Ceramic Dual-In-Line Package (D)
NS Package Number J16A
8
Physical Dimensions inches (millimeters) (Continued)
16 Lead Small Outline Integrated Circuit (S)
NS Package Number M16A
16 Lead Plastic Dual-In-Line Package (P)
NS Package Number N16E
9
54AC/74AC151 #54ACT/74ACT151 8-Input Multiplexer
Physical Dimensions inches (millimeters) (Continued)
16 Lead Ceramic Flatpak (F)
NS Package Number W16A
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with instructions for use provided in the labeling, can effectiveness.
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