Fairchild Semiconductor 74AC151SJX, 74AC151SJ, 74AC151SCX, 74AC151SC, 74AC151PC Datasheet
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November 1988
Revised November 1999
74AC151 • 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 outputs are provided.
Features
■ICC reduced by 50%
■Outputs source/sink 24 mA
■ACT151 has TTL-compatible inputs
Ordering Code:
Order Number |
Package Number |
Package Description |
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74AC151SC |
M16A |
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body |
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74AC151SJ |
M16D |
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide |
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74AC151MTC |
MTC16 |
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide |
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74AC151PC |
N16E |
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide |
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74ACT151SC |
M16A |
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body |
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74ACT151SJ |
M16D |
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide |
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74ACT151PC |
N16E |
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide |
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Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbols |
Connection Diagram |
IEEE/IEC
Pin Descriptions
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Pin Names |
Description |
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I0–I7 |
Data Inputs |
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S0–S2 |
Select Inputs |
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Enable Input |
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E |
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Z |
Data Output |
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Inverted Data Output |
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Z |
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FACT is a trademark of Fairchild Semiconductor Corporation.
Multiplexer Input-8 74ACT151 • 74AC151
© 1999 Fairchild Semiconductor Corporation |
DS009927 |
www.fairchildsemi.com |
74AC151 • 74ACT151
Truth Table
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Inputs |
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Outputs |
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E |
S2 |
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S1 |
S0 |
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Z |
Z |
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H |
X |
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X |
X |
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H |
L |
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L |
L |
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L |
L |
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I0 |
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I |
0 |
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L |
L |
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L |
H |
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I1 |
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I |
1 |
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L |
L |
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H |
L |
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I2 |
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I |
2 |
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L |
L |
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H |
H |
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I3 |
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I |
3 |
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L |
H |
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L |
L |
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I4 |
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I |
4 |
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L |
H |
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L |
H |
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I5 |
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I |
5 |
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L |
H |
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H |
L |
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I6 |
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I |
6 |
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L |
H |
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H |
H |
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I7 |
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I |
7 |
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H = |
HIGH Voltage Level |
L = |
LOW Voltage Level |
X = |
Immaterial |
Logic Diagram
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, S1, S2. 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:
Z = E • (I0 • S0 • S1 • S2 + I1 • S0 • S1 • S2 +
I2 • S0 • S1 • S2 + I3 • S0 • S1 • S2 + I4 • S0 • S1 • S2 + I5 • S0 • S1 • S2 + I6 • S0 • S1 • S2 + I 7 • 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 complement.
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
www.fairchildsemi.com |
2 |
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) |
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− 0.5V to + 7.0V |
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DC Input Diode Current (IIK) |
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VI = |
− 0.5V |
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− 20 mA |
VI = |
VCC + 0.5V |
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+ 20 mA |
DC Input Voltage (VI) |
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− 0.5V to VCC + 0.5V |
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DC Output Diode Current (IOK) |
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VO = |
− 0.5V |
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− 20 mA |
VO = |
VCC + 0.5V |
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+ 20 mA |
DC Output Voltage (VO) |
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− 0.5V to VCC + 0.5V |
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DC Output Source |
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or Sink Current (IO) |
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± 50 mA |
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DC VCC or Ground Current |
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per Output Pin (I |
or I |
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± 50 mA |
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CC |
GND |
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Storage Temperature (TSTG) |
− 65° C to + 150° C |
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Junction Temperature (TJ) |
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PDIP |
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140° C |
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Recommended Operating
Conditions
Supply Voltage (VCC) |
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AC |
2.0V to 6.0V |
ACT |
4.5V to 5.5V |
Input Voltage (V ) |
0V to V |
I |
CC |
Output Voltage (VO) |
0V to VCC |
Operating Temperature (TA) |
− 40° C to + 85° C |
Minimum Input Edge Rate (∆ V/∆ t) |
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AC Devices |
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VIN from 30% to 70% of VCC |
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VCC @ 3.3V, 4.5V, 5.5V |
125 mV/ns |
Minimum Input Edge Rate (∆ V/∆ t) |
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ACT Devices |
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VIN from 0.8V to 2.0V |
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VCC @ 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. Fairchild does not recommend operation of FACT circuits outside databook specifications.
DC Electrical Characteristics for AC
Symbol |
Parameter |
VCC |
TA = + 25° C |
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TA = − 40° C to + 85° C |
Units |
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Conditions |
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(V) |
Typ |
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Guaranteed Limits |
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VIH |
Minimum HIGH Level |
3.0 |
1.5 |
2.1 |
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2.1 |
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VOUT = |
0.1V |
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Input Voltage |
4.5 |
2.25 |
3.15 |
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3.15 |
V |
or VCC − |
0.1V |
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5.5 |
2.75 |
3.85 |
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3.85 |
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VIL |
Maximum LOW Level |
3.0 |
1.5 |
0.9 |
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0.9 |
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VOUT = |
0.1V |
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Input Voltage |
4.5 |
2.25 |
1.35 |
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1.35 |
V |
or VCC − |
0.1V |
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5.5 |
2.75 |
1.65 |
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1.65 |
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VOH |
Minimum HIGH Level |
3.0 |
2.99 |
2.9 |
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2.9 |
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Output Voltage |
4.5 |
4.49 |
4.4 |
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4.4 |
V |
IOUT = |
− |
50 µ A |
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5.5 |
5.49 |
5.4 |
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5.4 |
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VIN = |
VIL or VIH |
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3.0 |
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2.56 |
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2.46 |
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IOH = |
− |
12 mA |
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4.5 |
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3.86 |
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3.76 |
V |
IOH = |
− |
24 mA |
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5.5 |
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4.86 |
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4.76 |
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IOH = |
− |
24 mA(Note 2) |
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VOL |
Maximum LOW Level |
3.0 |
0.002 |
0.1 |
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0.1 |
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Output Voltage |
4.5 |
0.001 |
0.1 |
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0.1 |
V |
IOUT = |
50 µ A |
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5.5 |
0.001 |
0.1 |
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0.1 |
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VIN = |
VIL or VIH |
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3.0 |
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0.36 |
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0.44 |
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IOL = |
12 mA |
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4.5 |
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0.36 |
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0.44 |
V |
IOL = |
24 mA |
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5.5 |
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0.36 |
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0.44 |
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IOL = |
24 mA (Note 2) |
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IIN |
Maximum Input |
5.5 |
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± 0.1 |
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± 1.0 |
µ A |
VI = VCC, GND |
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(Note 4) |
Leakage Current |
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IOLD |
Minimum Dynamic |
5.5 |
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75 |
mA |
VOLD = |
1.65V Max |
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IOHD |
Output Current (Note 3) |
5.5 |
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− 75 |
mA |
VOHD = |
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3.85V Min |
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ICC |
Maximum Quiescent |
5.5 |
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4.0 |
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40.0 |
µ A |
VIN = |
VCC or GND |
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(Note 4) |
Supply Current |
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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.
74ACT151 • 74AC151
3 |
www.fairchildsemi.com |
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