5-1
FACT DATA
The MC74AC151/74ACT151 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 MC74AC151/74ACT151 can be used as a universal function
generator to generate any logic function of four variables. Both true and
complementary outputs are provided.
• Outputs Source/Sink 24 mA
• ′ACT151 Has TTL Compatible Inputs
GND
1516 14 13 12 11 10
21 3 4 5 6 7
V
CC
9
8
E
EZZI
0
I
1
I
2
I
3
I4I
5I6I7S0S1S2
PIN NAMES
I0–I
7
Data Inputs
S0–S2Select Inputs
E
Enable Input
Z Data Output
Z
Inverted Data Output
TRUTH TABLE
Inputs Outputs
E S
2
S
1
S
0
Z Z
H X X X H L
L L L L I
0
I
0
L L L H I
1
I
1
L L H L I
2
I
2
L L H H I
3
I
3
L H L L I
4
I
4
L H L H I
5
I
5
L H H L I
6
I
6
L H H H I
7
I
7
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
1-OF-8
DECODER/DEMULTIPLEXER
N SUFFIX
CASE 648-08
PLASTIC
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC SYMBOL
S
0
S
1
S
2
Z Z
E I0I1I2I3I4I5I6I
7
查询MC74AC151供应商
MC74AC151 MC74ACT151
5-2
FACT DATA
FUNCTIONAL DESCRIPTION
The MC74AC151/74ACT151 is a logic implementation of
a single pole, 8-position switch with the switch position
controlled by the state of three Select inputs, S0, S1, S2. Both
true and complementary 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:
Z = E
•(I0•S0•S1•S
2+I1
•S0•S1•S
2
+
I
2
•S0•S1•S
2+I3
•S0•S1•S
2
+
I
4
•S0•S1•S
2+I5•S0
•S1•S
2
+
I
6
•S0•S1•S
2+I7•S0•S1•S2
)
The MC74AC151/74ACT151 provides the ability, in one
package, to select from eight sources of data or control
information. By proper manipulation of the inputs, the
MC74AC151/74ACT151 can provide any logic function of four
variables and its complement.
Z Z
S
2
S
1
S
0
E
I
0
I
1
I
2
I
3
I
4
I
5
I
6
I
7
LOGIC DIAGRAM
Please note that this diagram is provided
only for the understanding of logic
operations and should not be used to
estimate propagation delays.
MAXIMUM RATINGS*
Symbol Parameter Value Unit
V
CC
DC Supply Voltage (Referenced to GND) –0.5 to +7.0 V
V
in
DC Input Voltage (Referenced to GND) –0.5 to VCC +0.5 V
V
out
DC Output Voltage (Referenced to GND) –0.5 to VCC +0.5 V
I
in
DC Input Current, per Pin ±20 mA
I
out
DC Output Sink/Source Current, per Pin ±50 mA
I
CC
DC VCC or GND Current per Output Pin ±50 mA
T
stg
Storage Temperature –65 to +150 °C
* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended
Operating Conditions.
MC74AC151 MC74ACT151
5-3
FACT DATA
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Typ Max Unit
′AC 2.0 5.0 6.0
VCCSupply Voltage
′ACT 4.5 5.0 5.5
V
Vin, V
out
DC Input Voltage, Output Voltage (Ref. to GND) 0 V
CC
V
VCC @ 3.0 V 150
Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs
VCC @ 4.5 V 40 ns/V
r
, t
f
′AC Devices except Schmitt Inputs
VCC @ 5.5 V 25
VCC @ 4.5 V 10
tr, t
f
Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs
VCC @ 5.5 V 8.0
ns/V
T
J
Junction Temperature (PDIP) 140 °C
T
A
Operating Ambient Temperature Range –40 25 85 °C
I
OH
Output Current — High –24 mA
I
OL
Output Current — Low 24 mA
1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
DC CHARACTERISTICS
74AC 74AC
Symbol
Parameter
V
CC
(V)
TA = +25°C
TA =
–40°C to +85°C
Unit
Conditions
Typ Guaranteed Limits
V
IH
3.0 1.5 2.1 2.1 V
OUT
= 0.1 V
4.5 2.25 3.15 3.15 V or VCC – 0.1 V
5.5 2.75 3.85 3.85
V
IL
3.0 1.5 0.9 0.9 V
OUT
= 0.1 V
4.5 2.25 1.35 1.35 V or VCC – 0.1 V
5.5 2.75 1.65 1.65
V
OH
3.0 2.99 2.9 2.9 I
OUT
= –50 µA
4.5 4.49 4.4 4.4 V
5.5 5.49 5.4 5.4
*VIN = VIL or V
IH
3.0 2.56 2.46
–12 mA
4.5 3.86 3.76
V
I
OH
–24 mA
5.5 4.86 4.76 –24 mA
V
OL
3.0 0.002 0.1 0.1 I
OUT
= 50 µA
4.5 0.001 0.1 0.1 V
5.5 0.001 0.1 0.1
*VIN = VIL or V
IH
3.0 0.36 0.44
12 mA
4.5 0.36 0.44
V
I
OL
24 mA
5.5 0.36 0.44 24 mA
I
IN
5.5
±0.1
±1.0
µA
VI = VCC, GND
I
OLD
5.5 75 mA V
OLD
= 1.65 V Max
I
OHD
Output Current
5.5 –75 mA V
OHD
= 3.85 V Min
I
CC
5.5
8.080µA
VIN = VCC or GND
* All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC.
tr, t
f
Input Rise and Fall Time (Note 2)
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
Maximum Low Level
Output Voltage
Maximum Input
Leakage Current
†Minimum Dynamic
Maximum Quiescent
Supply Current
MC74AC151 MC74ACT151
5-4
FACT DATA
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74AC 74AC
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Min Typ Max Min Max
3.3 3.0 11.5 18.0 3.0 20.0
t
PLH
5.0 2.5 8.5 13.0 2.0 15.0
ns
3-6
3.3 2.5 12 18.0 2.5 20.0
t
PHL
5.0 2.0 8.5 13.0 1.5 15.0
ns
3-6
3.3 2.5 8.0 13.0 2.0 14.0
t
PLH
to Z or Z
5.0 2.0 6.0 10.0 1.5 11.0
ns
3-6
3.3 1.5 8.5 13.0 1.5 14.0
t
PHL
to Z or Z
5.0 1.5 6.5 10.0 1.5 11.0
ns
3-6
3.3 2.5 9.5 14.0 2.0 15.5
t
PLH
5.0 1.5 7.0 10.5 1.5 11.0
ns
3-5
3.3 2.5 9.5 15.0 2.0 16.0
t
PHL
5.0 1.5 7.0 11.0 1.5 12.0
ns
3-5
* Voltage Range 3.3 V is 3.3 V ± 0.3 V
Voltage Range 5.0 V is 5.0 V ± 0.5 V
DC CHARACTERISTICS
74ACT 74ACT
Symbol
Parameter
V
CC
(V)
TA = +25°C
TA =
–40°C to +85°C
Unit
Conditions
Typ Guaranteed Limits
V
IH
4.5 1.5 2.0 2.0
V
OUT
= 0.1 V
5.5 1.5 2.0 2.0
V
or VCC – 0.1 V
V
IL
4.5 1.5 0.8 0.8
V
OUT
= 0.1 V
5.5 1.5 0.8 0.8
V
or VCC – 0.1 V
V
OH
4.5 4.49 4.4 4.4
I
OUT
= –50 µA
5.5 5.49 5.4 5.4
V
*VIN = VIL or V
IH
4.5 3.86 3.76
I
OH
–24 mA
5.5 4.86 4.76 –24 mA
V
OL
4.5 0.001 0.1 0.1
I
OUT
= 50 µA
5.5 0.001 0.1 0.1
V
*VIN = VIL or V
IH
4.5 0.36 0.44
I
OL
24 mA
5.5 0.36 0.44 24 mA
I
IN
5.5
±0.1
±1.0
µA
VI = VCC, GND
D
I
CCT
Additional Max. ICC/Input 5.5 0.6 1.5 mA VI = VCC – 2.1 V
I
OLD
5.5 75 mA V
OLD
= 1.65 V Max
I
OHD
Output Current
5.5 –75 mA V
OHD
= 3.85 V Min
I
CC
5.5
8.080µA
VIN = VCC or GND
* All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
Propagation Delay
Sn to Z or Z
Propagation Delay
Sn to Z or Z
Propagation Delay
E
Propagation Delay
E
Propagation Delay
In to Z or Z
Propagation Delay
In to Z or Z
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
Maximum Low Level
Output Voltage
Maximum Input
Leakage Current
†Minimum Dynamic
Maximum Quiescent
Supply Current
V
V
MC74AC151 MC74ACT151
5-5
FACT DATA
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74ACT 74ACT
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Min Typ Max Min Max
t
PLH
5.0
3.5
15.5
3.0
17.0ns3-6
t
PHL
5.0
3.5
15.5
3.0
16.5ns3-6
t
PLH
5.0
3.5153.0
16.5ns3-6
t
PHL
5.0
4.0
16.5
3.5
18.5ns3-6
t
PLH
to Z
5.0
2.5
9.5
2.5
10.0ns3-6
t
PHL
to Z
5.0
2.5
9.0
2.5
10.0ns3-6
t
PLH
to Z
5.0
2.5
8.5
2.5
9.5ns3-6
t
PHL
to Z
5.0
3.0
10.0
2.5
10.5ns3-6
t
PLH
5.0
3.5
11.5
3.0
12.5ns3-6
t
PHL
5.0
3.5
12.0
3.0
13.5ns3-6
t
PLH
5.0
3.5
12.0
3.0
13.0ns3-6
t
PHL
5.0
4.0
12.5
3.0
14.0ns3-6
* Voltage Range 5.0 V is 5.0 V ± 0.5 V
CAPACITANCE
Symbol Parameter
Value
Typ
Unit Test Conditions
C
IN
Input Capacitance 4.5 pF VCC = 5.0 V
C
PD
Power Dissipation Capacitance 70 pF VCC = 5.0 V
Propagation Delay
Sn to Z
Propagation Delay
Sn to Z
Propagation Delay
Sn to Z
Propagation Delay
Sn to Z
Propagation Delay
E
Propagation Delay
E
Propagation Delay
E
Propagation Delay
E
Propagation Delay
In to Z
Propagation Delay
In to Z
Propagation Delay
In to Z
Propagation Delay
In to Z
MC74AC151 MC74ACT151
5-6
FACT DATA
OUTLINE DIMENSIONS
N SUFFIX
PLASTIC DIP PACKAGE
CASE 648–08
ISSUE R
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B–05
ISSUE J
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
1 8
16 9
SEATING
PLANE
F
J
M
R
X 45
_
G
8 PLP
–B–
–A–
M
0.25 (0.010) B
S
–T–
D
K
C
16 PL
S
B
M
0.25 (0.010) A
S
T
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A 9.80 10.00 0.386 0.393
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G 1.27 BSC 0.050 BSC
J 0.19 0.25 0.008 0.009
K 0.10 0.25 0.004 0.009
M 0 7 0 7
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019
_ _ _ _
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
–A–
B
F
C
S
H
G
D
J
L
M
16 PL
SEATING
1 8
916
K
PLANE
–T–
M
A
M
0.25 (0.010) T
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A 0.740 0.770 18.80 19.55
B 0.250 0.270 6.35 6.85
C 0.145 0.175 3.69 4.44
D 0.015 0.021 0.39 0.53
F 0.040 0.70 1.02 1.77
G 0.100 BSC 2.54 BSC
H 0.050 BSC 1.27 BSC
J 0.008 0.015 0.21 0.38
K 0.110 0.130 2.80 3.30
L 0.295 0.305 7.50 7.74
M 0 10 0 10
S 0.020 0.040 0.51 1.01
____
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MC74AC151/D
*MC74AC151/D*
◊
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