2005 Fairchild Semiconductor Corporation
DS012007
www.fairchildsemi.com
February 1994
Revised February 2005
7
4
L
VX12
5
Low
V
o
l
t
age
Quad Buf
f
er
wi
th
3-ST
A
T
E Out
put
s
74LVX125
Low Voltage Quad Buffer with 3-STATE Outputs
General Description
The LVX125 contains four independent non-inverting buff-
ers with 3-STATE outputs. The inputs tolerate voltages up
to 7V allowing the interface of 5V systems to 3V systems.
Features
s
Input voltage level translation from 5V to 3V
s
Ideal for low power/low noise 3.3V applications
s
Guaranteed simultaneous switching noise level and
dynamic threshold performance
Ordering Code:
Devices also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Note 1: "_NL" indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.
Logic Symbol
IEEE/IEC
Pin Descriptions
Connection Diagram
Truth Table
H
HIGH Voltage Level
L
LOW Voltage Level
Z
High Impedance
X
Immaterial
Order Number
Package
Package Description
Number
74LVX125M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
74LVX125SJ
M14D
Pb-Free 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVX125MTC
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74LVX125MTCX_NL
(Note 1)
MTC14
Pb-Free 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
Pin Names
Description
A
n
Inputs
OE
n
Output Enable Inputs
O
n
Outputs
Inputs
Output
OE
n
A
n
O
n
L
L
L
L
H
H
H
X
Z
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2
74
L
VX125
Absolute Maximum Ratings
(Note 2)
Recommended Operating
Conditions
(Note 3)
Note 2: 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 ratings.
The "Recommended Operating Conditions" table will define the conditions
for actual device operation.
Note 3: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Noise Characteristics
(Note 4)
Note 4: Input t
r
t
f
3 ns
Supply Voltage (V
CC
)
0.5V to
7.0V
DC Input Diode Current
(I
IK
) V
I
0.5V
20 mA
DC Input Voltage (V
I
)
0.5V to
7.0V
DC Output Diode Current (I
OK
)
V
O
0.5V
20 mA
V
O
V
CC
0.5V
20 mA
Output Voltage (V
O
)
0.5V to V
CC
0.5V
DC Output Source/Sink Current (I
O
)
r
25 mA
DC V
CC
or Ground Current
(I
CC
or I
GND
)
r
50 mA
Storage Temperature Range (T
STG
)
65
q
C to
150
q
C
Power Dissipation
180 mW
Supply Voltage (V
CC
)
2.0V to 3.6V
Input Voltage (V
I
)
0V to 5.5V
Output Voltage (V
O
)
0V to V
CC
Operating Temperature (T
A
)
40
q
C to
85
q
C
Input Rise and Fall Time (
'
t/
'
V)
0 ns/V to 100 ns/V
Symbol
Parameter
V
CC
T
A
25
q
C
T
A
40
q
C to
85
q
C
Units
Conditions
(V)
Min
Typ
Max
Min
Max
V
IH
HIGH Level
2.0
1.5
1.5
Input Voltage
3.0
2.0
2.0
V
3.6
2.4
2.4
V
IL
LOW Level
2.0
0.5
0.5
Input Voltage
3.0
0.8
0.8
V
3.6
0.8
0.8
V
OH
HIGH Level
2.0
1.9
2.0
1.9
V
IN
V
IL
or
I
OH
50
P
A
Output Voltage
3.0
2.9
3.0
2.9
V
V
IH
I
OH
50
P
A
3.0
2.58
2.48
I
OH
4 mA
V
OL
LOW Level
2.0
0.0
0.1
0.1
V
IN
V
IL
or
I
OL
50
P
A
Output Voltage
3.0
0.0
0.1
0.1
V
V
IH
I
OL
50
P
A
3.0
0.36
0.44
I
OL
4 mA
I
OZ
3-STATE Output
3.6
r
0.25
r
2.5
P
A
V
IN
V
IH
or V
IL
Off-State Current
V
OUT
V
CC
or GND
I
IN
Input Leakage
3.6
r
0.1
r
1.0
P
A
V
IN
5.5V or GND
Current
I
CC
Quiescent Supply
3.6
4.0
40.0
P
A
V
IN
V
CC
or GND
Current
Symbol
Parameter
V
CC
T
A
25
q
C
Units
C
L
(pF)
(V)
Typ
Limit
V
OLP
Quiet Output Maximum Dynamic V
OL
3.3
0.3
0.8
V
50
V
OLV
Quiet Output Minimum Dynamic V
OL
3.3
0.3
0.8
V
50
V
IHD
Minimum HIGH Level Dynamic Input Voltage
3.3
2.0
V
50
V
ILD
Maximum LOW Level Dynamic Input Voltage
3.3
0.8
V
50
3
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74
L
V
X
1
25
AC Electrical Characteristics
Note 5: Parameter guaranteed by design. t
OSLH
|t
PLHm
t
PLHn
|, t
OSHL
|t
PHLm
t
PHLn
|
Capacitance
Note 6: C
PD
is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
Symbol
Parameter
V
CC
T
A
25
q
C
T
A
40
q
C to
85
q
C
Units
Conditions
(V)
Min
Typ
Max
Min
Max
t
PLH
Propagation Delay Time
2.7
5.8
10.1
1.0
13.5
ns
C
L
15 pF
t
PHL
Data to Output
8.3
13.6
1.0
17.0
C
L
50 pF
3.3
r
0.3
4.4
6.2
1.0
8.5
C
L
15 pF
6.9
9.7
1.0
12.0
C
L
50 pF
t
PZH
Output Enable Time
2.7
5.3
9.3
1.0
12.5
ns
C
L
15 pF, R
L
1 k
:
t
PZL
7.8
12.8
1.0
16.0
C
L
50 pF, R
L
1 k
:
3.3
r
0.3
4.0
5.6
1.0
7.5
C
L
15 pF, R
L
1 k
:
6.5
9.1
1.0
11.0
C
L
50 pF, R
L
1 k
:
t
PHZ
Output Disable
2.7
10.0
15.7
1.0
19.0
ns
C
L
50 pF, R
L
1 k
:
t
PLZ
Time
3.3
r
0.3
8.3
11.2
1.0
13.0
C
L
50 pF, R
L
1 k
:
t
OSHL
Output to Output
2.7
1.5
1.5
ns
C
L
50 pF
t
OSLH
Skew (Note 5)
3.3
1.5
1.5
Symbol
Parameter
T
A
25
q
C
T
A
40
q
C to
85
q
C
Units
Min
Typ
Max
Min
Max
C
IN
Input Capacitance
4.0
10
10
pF
C
PD
Power Dissipation
14
pF
Capacitance (Note 6)
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4
74
L
VX125
Physical Dimensions
inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
Package Number M14A
5
www.fairchildsemi.com
74
L
V
X
1
25
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
Pb-Free 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M14D
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