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Part Number 74LVQ151

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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 uni-
versal function generator to generate any logic function of
four variables. Both true and complementary outputs are
provided.
Features
n
Ideal for low power/low noise 3.3V applications
n
Guaranteed simultaneous switching noise level and
dynamic threshold performance
n
Guaranteed pin-to-pin skew AC performance
n
Guaranteed incident wave switching into 75
Ordering Code:
Order Number
Package Number
Package Description
74LVQ151SC
M16A
16-Lead (0.150" Wide) Small Outline Integrated Circuit, SOIC JEDEC
74LVQ151SJ
M16D
16-Lead Molded Small Outline Package, SOIC EIAJ
Devices also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Logic Symbols
Connection Diagram
Pin Descriptions
Pin
Names
Description
I
0
­I
7
Data Inputs
S
0
­S
2
Select Inputs
E
Enable Input
Z
Data Output
Z
Inverted Data Output
DS011351-1
IEEE/IEC
DS011351-4
Pin Assignment
SOIC JEDEC and EIAJ
DS011351-2
May 1998
74L
VQ151
Low
V
oltage
8-Input
Multiplexer
© 1998 Fairchild Semiconductor Corporation
DS011351
www.fairchildsemi.com
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
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
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
· (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.
Logic Diagram
DS011351-5
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
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
CC
)
-0.5V to +7.0V
DC Input Diode Current (I
IK
)
V
I
= -0.5V
-20 mA
V
I
= V
CC
+ 0.5V
+20 mA
DC Input Voltage (V
I
)
-0.5V to V
CC
+ 0.5V
DC Output Diode Current (I
OK
)
V
O
= -0.5V
-20 mA
V
O
= V
CC
+ 0.5V
+20 mA
DC Output Voltage (V
O
)
-0.5V to V
CC
+ 0.5V
DC Output Source
or Sink Current (I
O
)
±
50 mA
DC V
CC
or Ground Current
(I
CC
or I
GND
)
±
200 mA
Storage Temperature (T
STG
)
-65°C to +150°C
DC Latch-Up Source or
Sink Current
±
100 mA
Recommended Operating
Conditions
(Note 2)
Supply Voltage (V
CC
)
2.0V to 3.6V
Input Voltage (V
I
)
0V to V
CC
Output Voltage (V
O
)
0V to V
CC
Operating Temperature (T
A
)
-40°C to +85°C
Minimum Input Edge Rate (
V/
t)
V
IN
from 0.8V to 2.0V
V
CC
@
3.0V
125 mV/ns
Note 1: The "Absolute Maximum Ratings" are those values beyond which
the safety of the device cannot be guaranteed. The device should not be op-
erated at these limits. The parametric values defined in the Electrical Charac-
teristics tables are not guaranteed at the absolute maximum ratings.The
"Recommended Operating Conditions" table will define the conditions for ac-
tual device operation.
Note 2: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
Parameter
V
CC
(V)
T
A
= +25°C
T
A
= -40°C to +85°C
Units
Conditions
Typ
Guaranteed Limits
V
IH
Minimum High Level
3.0
1.5
2.0
2.0
V
V
OUT
= 0.1V
Input Voltage
or V
CC
- 0.1V
V
IL
Maximum Low Level
3.0
1.5
0.8
0.8
V
V
OUT
= 0.1V
Input Voltage
or V
CC
- 0.1V
V
OH
Minimum High Level
Output Voltage
3.0
2.99
2.9
2.9
V
I
OUT
= -50 µA
3.0
2.58
2.48
V
V
IN
= V
IL
or V
IH
(Note 3)
I
OH
= -12 mA
V
OL
Maximum Low Level
Output Voltage
3.0
0.002
0.1
0.1
V
I
OUT
= 50 µA
3.0
0.36
0.44
V
V
IN
= V
IL
or V
IH
(Note 3)
I
OL
= 12 mA
I
IN
Maximum Input
3.6
±
0.1
±
1.0
µA
V
I
= V
CC
, GND
Leakage Current
I
OLD
Minimum Dynamic
3.6
36
mA
V
OLD
= 0.8V Max (Note 5)
I
OHD
Output Current (Note 4)
3.6
-25
mA
V
OHD
= 2.0V (Note 5)
I
CC
Maximum Quiescent
3.6
4.0
40.0
µA
V
IN
= V
CC
Supply Current
or GND
V
OLP
Quiet Output
3.3
0.8
V
(Notes 6, 7)
Maximum Dynamic V
OL
V
OLV
Quiet Output
3.3
-0.8
V
(Notes 6, 7)
Minimum Dynamic V
OL
V
IHD
Maximum High Level
3.3
1.7
2.0
V
(Notes 6, 8)
Dynamic Input Voltage
V
ILD
Maximum Low Level
3.3
1.7
0.8
V
(Notes 6, 8)
Dynamic Input Voltage
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 75
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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AC Electrical Characteristics
Symbol
Parameter
V
CC
(V)
T
A
= +25°C
C
L
= 50 pF
T
A
= -40°C to +85°C
C
L
= 50 pF
Units
Min
Typ
Max
Min
Max
t
PLH
Propagation Delay
2.7
3.0
13.8
25.3
3.0
28.0
ns
S
n
to Z or Z
3.3
±
0.3
3.0
11.5
18.0
3.0
20.0
t
PHL
Propagation Delay
2.7
2.5
14.4
25.3
2.5
28.0
ns
S
n
to Z or Z
3.3
±
0.3
2.5
12.0
18.0
2.5
20.0
t
PLH
Propagation Delay
2.7
2.5
9.6
18.3
2.0
20.0
ns
E to Z or Z
3.3
±
0.3
2.5
8.0
13.0
2.0
14.0
t
PHL
Propagation Delay
2.7
1.5
10.2
18.3
1.5
20.0
ns
E to Z or Z
3.3
±
0.3
1.5
8.5
13.0
1.5
14.0
t
PLH
Propagation Delay
2.7
2.5
11.4
19.7
2.0
22.0
ns
I
n
to Z or Z
3.3
±
0.3
2.5
9.5
14.0
2.0
15.5
t
PHL
Propagation Delay
2.7
2.5
11.4
21.1
2.0
23.0
ns
I
n
to Z or Z
3.3
±
0.3
2.5
9.5
15.0
2.0
16.0
t
OSHL
Output to Output Skew (Note
9)
2.7
1.0
1.5
1.5
ns
t
OSLH
Data to Output
3.3
±
0.3
1.0
1.5
1.5
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 speci-
fication 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
Parameter
Typ
Units
Conditions
C
IN
Input Capacitance
4.5
pF
V
CC
= Open
C
PD
(Note 10)
Power Dissipation
45
pF
V
CC
= 3.3V
Capacitance
Note 10: C
PD
is measured at 10 MHz.
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Physical Dimensions
inches (millimeters) unless otherwise noted
16-Lead (0.150" Wide) Small Outline Integrated Circuit, SOIC JEDEC
Package Number M16A
16-Lead Molded Small Outline Package, SOIC EIAJ
Package Number M16D
5
www.fairchildsemi.com