74LVQ151 Low Voltage 8-Input Multiplexer
February 1992
Revised June 2001
74LVQ151
Low Voltage 8-Input Multiplexer
General Description
The LVQ151 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 LVQ151 can be used as
a universal function generator to generate any logic func-
tion of four variables. Both true and complementary outputs
are provided.
Features
s
Ideal for low power/low noise 3.3V applications
s
Guaranteed simultaneous switching noise level and
dynamic threshold performance
s
Guaranteed pin-to-pin skew AC performance
s
Guaranteed incident wave switching into 75
Ω
Ordering Code:
Order Number
74LVQ151SC
74LVQ151SJ
Package Number
M16A
M16D
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
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
Pin Descriptions
Pin Names
I
0
–I
7
S
0
–S
2
E
Z
Z
Description
Data Inputs
Select Inputs
Enable Input
Data Output
Inverted Data Output
© 2001 Fairchild Semiconductor Corporation
DS011351
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74LVQ151
Truth Table
Inputs
E
H
L
L
L
L
L
L
L
L
S
2
X
L
L
L
L
H
H
H
H
S
1
X
L
L
H
H
L
L
H
H
S
0
X
L
H
L
H
L
H
L
H
Outputs
Z
H
I
0
I
1
I
2
I
3
I
4
I
5
I
6
I
7
Z
L
I
0
I
1
I
2
I
3
I
4
I
5
I
6
I
7
Functional Description
The LVQ151 is a logic implementation of a single pole, 8-
position switch with the switch position controlled by the
state of three Select inputs, S
0
, 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:
Z
=
E • (I
0
• S
0
• S
1
• S
2
+
I
1
• S
0
• S
1
• S
2
+
I
2
• S
0
• S
1
• S
2
+
I
3
• S
0
• S
1
• S
2
+
I
4
• S
0
• S
1
• S
2
+
I
5
• S
0
• S
1
• S
2
+
I
6
• S
0
• S
1
• S
2
+
I
7
• S
0
• S
1
• S
2
)
The LVQ151 provides the ability, in one package to select
from eight sources of data or control information. By proper
manipulation of the inputs, the LVQ151 can provide any
logic function of four variables and its complement.
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
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.
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2
74LVQ151
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
CC
)
DC Input Diode Current (I
IK
)
V
I
= −
0.5V
V
I
=
V
CC
+
0.5V
DC Input Voltage (V
I
)
DC Output Diode Current (I
OK
)
V
O
= −
0.5V
V
O
=
V
CC
+
0.5V
DC Output Voltage (V
O
)
DC Output Source
or Sink Current (I
O
)
DC V
CC
or Ground Current
(I
CC
or I
GND
)
Storage Temperature (T
STG
)
DC Latch-Up Source or
Sink Current
−
0.5V to
+
7.0V
−
20 mA
+
20 mA
−
0.5V to V
CC
+
0.5V
−
20 mA
+
20 mA
−
0.5V to V
CC
+
0.5V
±
50 mA
±
200 mA
−
65
°
C to
+
150
°
C
±
100 mA
Recommended Operating
Conditions
(Note 2)
Supply Voltage (V
CC
)
Input Voltage (V
I
)
Output Voltage (V
O
)
Operating Temperature (T
A
)
Minimum Input Edge Rate (
∆
V/
∆
t)
V
IN
from 0.8V to 2.0V
V
CC
@ 3.0V
125 mV/ns
2.0V to 3.6V
0V to V
CC
0V to V
CC
−
40
°
C to
+
85
°
C
Note 1:
The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum rat-
ings.The “Recommended Operating Conditions” table will define the condi-
tions for actual device operation.
Note 2:
Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
V
IH
V
IL
V
OH
Parameter
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
V
OL
Maximum Low Level
Output Voltage
I
IN
I
OLD
I
OHD
I
CC
V
OLP
V
OLV
V
IHD
V
ILD
Maximum Input
Leakage Current
Minimum Dynamic
Output Current (Note 4)
Maximum Quiescent
Supply Current
Quiet Output
Maximum Dynamic V
OL
Quiet Output
Minimum Dynamic V
OL
Maximum High Level
Dynamic Input Voltage
Maximum Low Level
Dynamic Input Voltage
V
CC
(V)
3.0
3.0
3.0
3.0
3.0
3.0
3.6
3.6
3.6
3.6
3.3
3.3
3.3
3.3
1.7
1.7
4.0
0.8
−0.8
2.0
0.8
0.002
T
A
= +25°C
Typ
1.5
1.5
2.99
2.0
0.8
2.9
2.58
0.1
0.36
±0.1
T
A
= −40°C
to
+85°C
Guaranteed Limits
2.0
0.8
2.9
2.48
0.1
0.44
±1.0
36
−25
40.0
V
V
V
V
V
V
µA
mA
mA
µA
V
V
V
V
V
OUT
=
0.1V
or V
CC
−
0.1V
V
OUT
=
0.1V
or V
CC
−
0.1V
I
OUT
= −50 µA
V
IN
=
V
IL
or V
IH
(Note 3)
I
OH
= −12
mA
I
OUT
=
50
µA
V
IN
=
V
IL
or V
IH
(Note 3)
I
OL
=
12 mA
V
I
=
V
CC
,
GND
V
OLD
=
0.8V Max (Note 5)
V
OHD
=
2.0V (Note 5)
V
IN
=
V
CC
or GND
(Note 6)(Note 7)
(Note 6)(Note 7)
(Note 6)(Note 8)
(Note 6)(Note 8)
Units
Conditions
Note 3:
All outputs loaded; thresholds on input associated with output under test.
Note 4:
Maximum test duration 2.0 ms, one output loaded at a time.
Note 5:
Incident wave switching on transmission lines with impedances as low as 75Ω for commercial temperature range is guaranteed for 74LVQ.
Note 6:
Worst case package.
Note 7:
Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V; one output at GND.
Note 8:
Max number of Data Inputs (n) switching. (n
−
1) inputs switching 0V to 3.3V. Input-under-test switching: 3.3V to threshold (V
ILD
), 0V to threshold
(V
IHD
), f
=
1 MHz.
3
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74LVQ151
AC Electrical Characteristics
T
A
= +25°C
Symbol
Parameter
V
CC
(V)
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
OSHL
t
OSLH
Propagation Delay
S
n
to Z or Z
Propagation Delay
S
n
to Z or Z
Propagation Delay
E to Z or Z
Propagation Delay
E to Z or Z
Propagation Delay
I
n
to Z or Z
Propagation Delay
I
n
to Z or Z
Output to Output Skew (Note 9)
Data to Output
2.7
3.3
±
0.3
2.7
3.3
±
0.3
2.7
3.3
±
0.3
2.7
3.3
±
0.3
2.7
3.3
±
0.3
2.7
3.3
±
0.3
2.7
3.3
±
0.3
Min
3.0
3.0
2.5
2.5
2.5
2.5
1.5
1.5
2.5
2.5
2.5
2.5
C
L
=
50 pF
Typ
13.8
11.5
14.4
12.0
9.6
8.0
10.2
8.5
11.4
9.5
11.4
9.5
1.0
1.0
Max
25.3
18.0
25.3
18.0
18.3
13.0
18.3
13.0
19.7
14.0
21.1
15.0
1.5
1.5
T
A
= −40°C
to
+85°C
C
L
=
50 pF
Min
3.0
3.0
2.5
2.5
2.0
2.0
1.5
1.5
2.0
2.0
2.0
2.0
Max
28.0
20.0
28.0
20.0
20.0
14.0
20.0
14.0
22.0
15.5
23.0
16.0
1.5
1.5
ns
ns
ns
ns
ns
ns
ns
Units
Note 9:
Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The
specification applies to any outputs switching in the same direction, either HIGH-to-LOW (t
OSHL
) or LOW-to-HIGH (t
OSLH
). Parameter guaranteed by design.
Capacitance
Symbol
C
IN
C
PD
(Note 10)
Parameter
Input Capacitance
Power Dissipation Capacitance
Typ
4.5
45
Units
pF
pF
V
CC
=
Open
V
CC
=
3.3V
Conditions
Note 10:
C
PD
is measured at 10 MHz.
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4
74LVQ151
Physical Dimensions
inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Package Number M16A
5
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