74LVX240 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs
May 1993
Revised October 2003
74LVX240
Low Voltage Octal Buffer/Line Driver with
3-STATE Outputs
General Description
The LVX240 is an octal inverting buffer and line driver
designed to be employed as a memory address driver,
clock driver and bus oriented transmitter or receiver which
provides improved PC board density. The inputs tolerate
up to 7V allowing interface of 5V systems to 3V systems.
Features
s
Input voltage 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:
Order Number
74LVX240M
74LVX240SJ
74LVX240MTC
Package Number
M20B
M20D
MTC20
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbol
IEEE/IEC
Pin Descriptions
Pin Names
OE
1
, OE
2
I
0
–I
7
O
0
–O
7
Description
3-STATE Output Enable Inputs
Inputs
Outputs
Truth Tables
Inputs
OE
1
L
L
I
n
L
H
X
Inputs
OE
2
L
L
H
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
X
=
Immaterial
Z
=
High Impedance
Outputs
(Pins 12, 14, 16, 18)
H
L
Z
Outputs
I
n
L
H
X
(Pins 3, 5, 7, 9)
H
L
Z
Connection Diagram
H
© 2003 Fairchild Semiconductor Corporation
DS011609
www.fairchildsemi.com
74LVX240
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
CC
)
DC Input Diode Current (I
IK
)
V
I
= −
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
)
Power Dissipation (P
D
)
−
0.5V to
+
7.0V
−
20 mA
−
0.5V to 7V
−
20 mA
+
20 mA
−
0.5V to V
CC
+
0.5V
±
25 mA
±
75 mA
−
65
°
C to
+
150
°
C
180 mW
Recommended Operating
Conditions
(Note 2)
Supply Voltage (V
CC
)
Input Voltage (V
I
)
Output Voltage (V
O
)
Operating Temperature (T
A
)
Input Rise and Fall Time (
∆
t/
∆
V)
2.0V to 3.6V
0V to 5.5V
0V to V
CC
−
40
°
C to
+
85
°
C
0 ns/V to 100 ns/V
Note 1:
Absolute Maximum Ratings are those values beyond which the
safety to the device cannot be guaranteed. The device should not be oper-
ated 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
actual device operation.
Note 2:
Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
V
IH
Parameter
HIGH Level
Input Voltage
V
IL
LOW Level
Input Voltage
V
OH
HIGH Level
Output Voltage
V
OL
LOW Level
Output Voltage
I
OZ
I
IN
I
CC
3-STATE Output
Off-State Current
Input Leakage Current
Quiescent Supply Current
3.6
3.6
±0.1
4.0
±1.0
40.0
µA
µA
V
CC
2.0
3.0
3.6
2.0
3.0
3.6
2.0
3.0
3.0
2.0
3.0
3.0
3.6
1.9
2.9
2.58
0.0
0.0
0.1
0.1
0.36
±0.25
2.0
3.0
T
A
= +25°C
Min
1.5
2.0
2.4
0.5
0.8
0.8
1.9
2.9
2.48
0.1
0.1
0.44
±2.5
µA
V
IN
=
V
IH
or V
IL
V
OUT
=
V
CC
or GND
V
IN
=
5.5V or GND
V
IN
=
V
CC
or GND
V
V
IN
=
V
IH
or V
IL
V
Typ
Max
T
A
= −40°C
to
+85°C
Min
1.5
2.0
2.4
0.5
0.8
0.8
V
IN
=
V
IH
or V
IL
I
OH
= −50 µA
I
OH
= −50 µA
I
OH
= −4
mA
I
OL
=
50
µA
I
OL
=
50
µA
I
OL
=
4 mA
V
V
Max
Units
Conditions
Noise Characteristics
(Note 3)
Symbol
V
OLP
V
OLV
V
IHD
V
ILD
Parameter
Quiet Output Maximum Dynamic V
OL
Quiet Output Minimum Dynamic V
OL
Minimum HIGH Level Dynamic Input Voltage
Maximum LOW Level Dynamic Input Voltage
V
CC
(V)
3.3
3.3
3.3
3.3
T
A
=
25°C
Typ
0.5
−0.5
Limit
0.8
−0.8
2.0
0.8
V
V
V
V
Units
C
L
(pF)
50
50
50
50
Note 3:
(Input t
r
=
t
f
=
3 ns)
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2
74LVX240
AC Electrical Characteristics
Symbol
t
PLH
t
PHL
Parameter
Propagation
Delay Time
3.3
±
0.3
t
PZL
t
PZH
3-STATE Output
Enable Time
3.3
±
0.3
t
PLZ
t
PHZ
t
OSLH
t
OSHL
3-STATE Output
Disable Time
Output to Output
Skew (Note 4)
2.7
3.3
±
0.3
2.7
3.3
2.7
V
CC
(V)
2.7
Min
T
A
= +25°C
Typ
5.7
8.2
4.3
6.8
7.1
9.6
5.5
8.0
11.6
9.7
Max
10.1
13.6
6.2
9.7
13.8
17.3
8.8
12.3
16.0
11.4
1.5
1.5
T
A
= −40°C
to
+85°C
Min
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Max
12.5
16.0
7.5
11.0
16.5
20.0
10.5
14.0
19.0
13.0
1.5
1.5
ns
ns
ns
ns
Units
Conditions
C
L
=
15 pF
C
L
=
50 pF
C
L
=
15 pF
C
L
=
50 pF
C
L
=
15 pF, R
L
=
1 kΩ
C
L
=
50 pF, R
L
=
1 kΩ
C
L
=
15 pF, R
L
=
1 kΩ
C
L
=
50 pF, R
L
=
1 kΩ
C
L
=
50 pF, R
L
=
1 kΩ
C
L
=
50 pF, R
L
=
1 kΩ
C
L
=
50 pF
Note 4:
Parameter guaranteed by design. t
OSLH
=
|t
PLHm
−
t
PLHn
|, t
OSHL
=
|t
PHLm
−
t
PHLn
|
Capacitance
Symbol
C
IN
C
OUT
C
PD
Input Capacitance
Output Capacitance
Power Dissipation Capacitance (Note 5)
Parameter
Min
T
A
= +25°C
Typ
4
6
17
10
Max
10
T
A
= −40°C
to
+85°C
Min
Max
10
pF
pF
pF
Units
Note 5:
C
PD
is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
3
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74LVX240
Physical Dimensions
inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package Number M20B
www.fairchildsemi.com
4
74LVX240
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M20D
5
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