MM74HC151 8-Channel Digital Multiplexer
September 1983
Revised February 1999
MM74HC151
8-Channel Digital Multiplexer
General Description
The MM74HC151 high speed Digital multiplexer utilizes
advanced silicon-gate CMOS technology. Along with the
high noise immunity and low power dissipation of standard
CMOS integrated circuits, it possesses the ability to drive
10 LS-TTL loads. The MM74HC151 selects one of the 8
data sources, depending on the address presented on the
A, B, and C inputs. It features both true (Y) and comple-
ment (W) outputs. The STROBE input must be at a low
logic level to enable this multiplexer. A high logic level at
the STROBE forces the W output HIGH and the Y output
LOW.
The 74HC logic family is functionally as well as pin-out
compatible with the standard 74LS logic family. All inputs
are protected from damage due to static discharge by inter-
nal diode clamps to V
CC
and ground.
Features
s
Typical propagation delay data select to output Y: 26 ns
s
Wide operating supply voltage range: 2–6V
s
Low input current: 1
µA
maximum
s
Low quiescent supply current: 80
µA
maximum (74HC)
s
High output drive current: 4 mA minimum
Ordering Code:
Order Number
MM74HC151M
MM74HC151SJ
MM74HC151MTC
MM74HC151N
Package Number
M16A
M16D
MTC16
N16E
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Assignments for DIP, SOIC, SOP and TSSOP
Truth Table
Inputs
Select
C
X
L
L
L
L
H
H
H
H
B
X
L
L
H
H
L
L
H
H
A
X
L
H
L
H
L
H
L
H
Strobe
S
H
L
L
L
L
L
L
L
L
Y
L
D0
D1
D2
D3
D4
D5
D6
D7
W
H
D0
D1
D2
D3
D4
D5
D6
D7
Outputs
Top View
H
=
HIGH Level, L
=
LOW Level, X
=
Don't Care
D0, D1...D7
=
the level of the respective D input
© 1999 Fairchild Semiconductor Corporation
DS005313.prf
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MM74HC151
Logic Diagram
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2
MM74HC151
Absolute Maximum Ratings
(Note 1)
(Note 2)
Supply Voltage (V
CC
)
DC Input Voltage (V
IN
)
DC Output Voltage (V
OUT
)
Clamp Diode Current (I
IK
, I
OK
)
DC Output Current, per pin (I
OUT
)
DC V
CC
or GND Current, per pin (I
CC
)
Storage Temperature Range (T
STG
)
Power Dissipation (P
D
)
(Note 3)
S.O. Package only
Lead Temperature (T
L
)
(Soldering 10 seconds)
600 mW
500 mW
260°C
−0.5
to
+7.0V
−1.5
to V
CC
+1.5V
−0.5
to V
CC
+0.5V
±20
mA
±25
mA
±50
mA
−65°C
to
+150°C
Recommended Operating
Conditions
Min
Supply Voltage (V
CC
)
DC Input or Output Voltage
(V
IN
, V
OUT
)
Operating Temperature Range (T
A
)
Input Rise or Fall Times
(t
r
, t
f
) V
CC
=
2.0V
V
CC
=
4.5V
V
CC
=
6.0V
1000
500
400
ns
ns
ns
−40
+85
°C
2
0
Max
6
V
CC
Units
V
V
Note 1:
Absolute Maximum Ratings are those values beyond which dam-
age to the device may occur.
Note 2:
Unless otherwise specified all voltages are referenced to ground.
Note 3:
Power Dissipation temperature derating — plastic “N” package:
−
12 mW/°C from 65°C to 85°C.
DC Electrical Characteristics
Symbol
V
IH
Parameter
Minimum HIGH Level
Input Voltage
V
IL
Maximum LOW Level
Input Voltage
V
OH
Minimum HIGH Level
Output Voltage
V
IN
=
V
IH
or V
IL
|I
OUT
|
≤
20
µA
Conditions
(Note 4)
V
CC
2.0V
4.5V
6.0V
2.0V
4.5V
6.0V
2.0V
4.5V
6.0V
2.0
4.5
6.0
4.2
5.7
0
0
0
0.2
0.2
T
A
=
25°C
Typ
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
3.98
5.48
0.1
0.1
0.1
0.26
0.26
±0.1
8.0
T
A
= −40
to 85°C T
A
= −55
to 125°C
Guaranteed Limits
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
3.84
5.34
0.1
0.1
0.1
0.33
0.33
±1.0
80
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
3.7
5.2
0.1
0.1
0.1
0.4
0.4
±1.0
160
Units
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
µA
µA
V
IN
=
V
IH
or V
IL
|I
OUT
|
≤
4.0 mA
|I
OUT
|
≤
5.2 mA
V
OL
Maximum LOW Level
Output Voltage
V
IN
=
V
IH
or V
IL
|I
OUT
|
≤
20
µA
2.0V
4.5V
6.0V
V
IN
=
V
IH
or V
IL
|I
OUT
|
≤
4.0 mA
|I
OUT
|
≤
5.2 mA
I
IN
I
CC
Maximum Input
Current
Maximum Quiescent
Supply Current
V
IN
=
V
CC
or GND
I
OUT
=
0
µA
6.0V
V
IN
=
V
CC
or GND
4.5V
6.0V
6.0V
4.5V
6.0V
Note 4:
For a power supply of 5V
±10%
the worst case output voltages (V
OH
, and V
OL
) occur for HC at 4.5V. Thus the 4.5V values should be used when
designing with this supply. Worst case V
IH
and V
IL
occur at V
CC
=
5.5V and 4.5V respectively. (The V
IH
value at 5.5V is 3.85V.) The worst case leakage cur-
rent (I
IN
, I
CC
, and I
OZ
) occur for CMOS at the higher voltage and so the 6.0V values should be used.
3
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MM74HC151
AC Electrical Characteristics
V
CC
=
5V, T
A
=
25
°
C, C
L
=
15 pF, t
r
=
t
f
=
6 ns
Symbol
t
PHL
, t
PLH
t
PHL
, t
PLH
t
PHL
, t
PLH
t
PHL
, t
PLH
t
PHL
, t
PLH
t
PHL
, t
PLH
Parameter
Maximum Propagation Delay
A, B or C to Y
Maximum Propagation Delay
A, B or C to W
Maximum Propagation Delay
Any D to Y
Maximum Propagation Delay
any D to W
Maximum Propagation Delay
Strobe to Y
Maximum Propagation Delay
Strobe to W
16
21
ns
17
23
ns
24
32
ns
22
29
ns
27
35
ns
Conditions
Typ
26
Guaranteed
Limit
35
Units
ns
AC Electrical Characteristics
C
L
=
50 pF, t
r
=
t
f
=
6 ns (unless otherwise specified)
Symbol
t
PHL
, t
PLH
Parameter
Maximum Propagation Delay
A, B or C to Y
t
PHL
, t
PLH
Maximum Propagation Delay
A, B or C to W
t
PHL
, t
PLH
Maximum Propagation Delay
any D to Y
t
PHL
, t
PLH
Maximum Propagation Delay
any D to W
t
PHL
, t
PLH
Maximum Propagation Delay
Strobe to Y
t
PHL
, t
PLH
Maximum Propagation Delay
Strobe to W
t
TLH
, t
THL
Maximum Output Rise
and Fall Time
C
PD
C
IN
Power Dissipation
Capacitance (Note 5)
Maximum Input
Capacitance
Note 5:
C
PD
determines the no load dynamic power consumption, P
D
=
C
PD
V
CC2
f
+
I
CC
V
CC
, and the no load dynamic current consumption,
I
S
=
C
PD
V
CC
f
+
I
CC
.
Conditions
V
CC
2.0V
4.5V
6.0V
2.0V
4.5V
6.0V
2.0V
4.5V
6.0V
2.0V
4.5V
6.0V
2.0V
4.5V
6.0V
2.0V
4.5V
6.0V
2.0V
4.5V
6.0V
T
A
=
25°C
Typ
90
31
26
95
32
27
70
27
23
75
29
25
50
21
18
45
20
17
30
8
7
110
5
10
205
41
35
205
41
35
195
39
33
185
37
32
140
28
24
127
25
22
75
15
13
T
A
= −40
to 85°C T
A
= −55
to 125°C
Guaranteed Limits
256
51
44
256
51
44
244
49
41
231
46
40
175
35
30
159
32
28
95
19
16
300
60
51
300
60
51
283
57
48
268
54
46
203
41
35
185
37
32
110
22
19
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
(per package)
10
10
pF
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4
MM74HC151
Physical Dimensions
inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow
Package Number M16A
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M16D
5
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