Page 1
MM54HC151/MM74HC151 8-Channel
Digital Multiplexer
General Description
This high speed Digital multiplexer utilizes advanced silicongate 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
MM54HC151/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 complement (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 54HC/74HC logic family is functionally as well as pinout compatible with the standard 54LS/74LS logic family.
All inputs are protected from damage due to static discharge by internal diode clamps to V
Features
Y
Typical propagation delay
data select to output Y: 26 ns
Y
Wide operating supply voltage range: 2–6V
Y
Low input current: 1 mA maximum
Y
Low quiescent supply current: 80 mA maximum (74HC)
Y
High output drive current: 4 mA minimum
November 1995
and ground.
CC
MM54HC151/MM74HC151 8-Channel Digital Multiplexer
Connection and Logic Diagrams
Dual-In-Line Package
TL/F/5313– 1
Top View
Order Number MM54HC151 or MM74HC151
Truth Table
Inputs Outputs
Select
CBA
XXX H L H
L L L L D0 D0
L L H L D1 D1
L H L L D2 D2
L H H L D3 D3
H L L L D4 D4
H L H L D5 D5
H H L L D6 D6
H H H L D7 D7
HeHigh Level, LeLow Level, XeDon’t Care
D0, D1...D7
e
the level of the respective D input
Strobe
SYW
TL/F/5313– 2
C
1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.
TL/F/5313
Page 2
Absolute Maximum Ratings (Notes1&2)
Operating Conditions
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (V
CC
)
DC Input Voltage (VIN)
DC Output Voltage (V
OUT
)
Clamp Diode Current (IIK,IOK)
DC Output Current, per pin (I
OUT
)
DC VCCor GND Current, per pin (ICC)
Storage Temperature Range (T
STG
b
b
)
b
0.5 toa7.0V
1.5 to V
CC
0.5 to V
CC
g
g
b
g
65§Ctoa150§C
a
1.5V
a
0.5V
20 mA
25 mA
50 mA
Supply Voltage (V
)26V
CC
DC Input or Output Voltage 0 V
(V
IN,VOUT
)
Operating Temp. Range (TA)
MM74HC
MM54HC
Input Rise or Fall Times
e
V
2.0V(tr,tf) 1000 ns
CC
e
V
4.5V 500 ns
CC
e
V
6.0V 400 ns
CC
Power Dissipation (PD)
(Note 3) 600 mW
S.O. Package only 500 mW
Lead Temp. (T
) (Soldering 10 seconds) 260§C
L
DC Electrical Characteristics (Note 4)
Symbol Parameter Conditions V
CC
A
e
T
25§C
Typ Guaranteed Limits
V
IH
Minimum High Level 2.0V 1.5 1.5 1.5 V
Input Voltage 4.5V 3.15 3.15 3.15 V
6.0V 4.2 4.2 4.2 V
V
IL
Maximum Low Level 2.0V 0.5 0.5 0.5 V
Input Voltage** 4.5V 1.35 1.35 1.35 V
6.0V 1.8 1.8 1.8 V
V
OH
Minimum High Level V
Output Voltage
e
VIHor V
l
IN
I
OUT
IL
s
20 mA 2.0V 2.0 1.9 1.9 1.9 V
l
4.5V 4.5 4.4 4.4 4.4 V
6.0V 6.0 5.9 5.9 5.9 V
e
V
VIHor V
IN
I
l
OUT
I
l
OUT
l
IN
I
OUT
e
V
OL
Maximum Low Level V
Output Voltage
IL
s
4.0 mA 4.5V 4.2 3.98 3.84 3.7 V
l
s
5.2 mA 6.0V 5.7 5.48 5.34 5.2 V
l
VIHor V
IL
s
20 mA 2.0V 0 0.1 0.1 0.1 V
l
4.5V 0 0.1 0.1 0.1 V
6.0V 0 0.1 0.1 0.1 V
e
V
VIHor V
IN
I
l
OUT
I
l
OUT
I
IN
I
CC
Note 1: Absolute Maximum Ratings are those values beyond which damage to the device may occur.
Note 2: Unless otherwise specified all voltages are referenced to ground.
Note 3: Power Dissipation temperature derating Ð plastic ‘‘N’’ package:
Note 4: For a power supply of 5V
with this supply. Worst case V
I
**V
Maximum Input V
Current
Maximum Quiescent V
Supply Current I
g
and VILoccur at V
) occur for CMOS at the higher voltage and so the 6.0V values should be used.
OZ
limits are currently tested at 20% of VCC. The above VILspecification (30% of VCC) will be implemented no later than Q1, CY’89.
IL
IH
e
IN
e
IN
OUT
10% the worst case output voltages (VOH, and VOL) occur for HC at 4.5V. Thus the 4.5V values should be used when designing
IL
s
4.0 mA 4.5V 0.2 0.26 0.33 0.4 V
l
s
5.2 mA 6.0V 0.2 0.26 0.33 0.4 V
l
VCCor GND 6.0V
g
0.1
VCCor GND 6.0V 8.0 80 160 mA
e
0 mA
b
12 mW/§C from 65§Cto85§C; ceramic ‘‘J’’ package:b12 mW/§C from 100§Cto125§C.
e
5.5V and 4.5V respectively. (The VIHvalue at 5.5V is 3.85V.) The worst case leakage current (IIN,ICC, and
CC
74HC 54HC
eb
T
40 to 85§CT
A
g
1.0
Min Max Units
V
§
§
Units
b
40
b
55
eb
A
CC
a
85
a
125
55 to 125§C
g
1.0 mA
C
C
2
Page 3
AC Electrical Characteristics V
CC
e
5V, T
Symbol Parameter Conditions Typ
t
PHL,tPLH
t
PHL,tPLH
t
PHL,tPLH
t
PHL,tPLH
t
PHL,tPLH
t
PHL,tPLH
Maximum Propagation Delay 26 35 ns
A,BorCtoY
Maximum Propagation Delay 27 35 ns
A,BorCtoW
Maximum Propagation Delay 22 29 ns
AnyDtoY
Maximum Propagation Delay 24 32 ns
anyDtoW
Maximum Propagation Delay 17 23 ns
Strobe to Y
Maximum Propagation Delay 16 21 ns
Strobe to W
A
e
25§C, C
e
15 pF, t
L
Guaranteed
Limit
r
e
e
t
f
Units
6ns
AC Electrical Characteristics C
e
L
50 pF, t
Symbol Parameter Conditions V
t
PHL,tPLH
t
PHL,tPLH
t
PHL,tPLH
t
PHL,tPLH
t
PHL,tPLH
t
PHL,tPLH
t
TLH,tTHL
C
PD
C
IN
Note 5: CPDdetermines the no load dynamic power consumption, P
Maximum Propagation Delay 2.0V 90 205 256 300 ns
A, B or C to Y 4.5V 31 41 51 60 ns
Maximum Propagation Delay 2.0V 95 205 256 300 ns
A, B or C to W 4.5V 32 41 51 60 ns
Maximum Propagation Delay 2.0V 70 195 244 283 ns
any D to Y 4.5V 27 39 49 57 ns
Maximum Propagation Delay 2.0V 75 185 231 268 ns
any D to W 4.5V 29 37 46 54 ns
Maximum Propagation Delay 2.0V 50 140 175 203 ns
Strobe to Y 4.5V 21 28 35 41 ns
Maximum Propagation Delay 2.0V 45 127 159 185 ns
Strobe to W 4.5V 20 25 32 37 ns
Maximum Output Rise 2.0V 30 75 95 110 ns
and Fall Time 4.5V 8 15 19 22 ns
Power Dissipation (per package) 110 pF
Capacitance (Note 5)
Maximum Input 5 10 10 10 pF
Capacitance
e
CPDV
D
e
e
t
6 ns (unless otherwise specified)
r
f
74HC 54HC
eb
T
40 to 85§CT
A
A
eb
55 to 125§C
Units
CC
e
T
25§C
A
Typ Guaranteed Limits
6.0V 26 35 44 51 ns
6.0V 27 35 44 51 ns
6.0V 23 33 41 48 ns
6.0V 25 32 40 46 ns
6.0V 18 24 30 35 ns
6.0V 17 22 28 32 ns
6.0V 7 13 16 19 ns
2
faICCVCC, and the no load dynamic current consumption, I
CC
e
CPDVCCfaICC.
S
3
Page 4
Physical Dimensions inches, (millimeters)
Order Number MM54HC151J or MM74HC151J
NS Package J16A
MM54HC151/MM74HC151 8-Channel Digital Multiplexer
Order Number MM74HC151N
NS Package N16E
LIFE SUPPORT POLICY
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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or 2. A critical component is any component of a life
systems which, (a) are intended for surgical implant support device or system whose failure to perform can
into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life
failure to perform, when properly used in accordance support device or system, or to affect its safety or
with instructions for use provided in the labeling, can effectiveness.
be reasonably expected to result in a significant injury
to the user.
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