74LVX240
Low Voltage Octal Buffer/Line Driver
with TRI-STATEÉ Outputs
General Description
Features
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.
Y
Logic Symbol
Connection Diagram
Y
Y
Y
Input voltage translation from 5V to 3V
Ideal for low power/low noise 3.3V applications
Available in SOIC JEDEC, SOIC EIAJ and TSSOP
packages
Guaranteed simultaneous switching noise level and dynamic threshold performance
Pin Assignment
for SOIC and TSSOP
IEEE/IEC
TL/F/11609 – 1
TL/F/11609 – 2
Pin Names
Description
OE1, OE2
I0 – I7
O0 – O7
TRI-STATE Output Enable Inputs
Inputs
Outputs
Truth Tables
Inputs
Inputs
OE1
In
Outputs
(Pins 12, 14, 16, 18)
OE2
In
Outputs
(Pins 3, 5, 7, 9)
L
L
H
L
H
X
H
L
Z
L
L
H
L
H
X
H
L
Z
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
Order Number
Z e High Impedance
SOIC JEDEC
SOIC EIAJ
TSSOP
74LVX240M
74LVX240MX
74LVX240SJ
74LVX240SJX
74LVX240MTC
74LVX240MTCX
M20B
M20D
MTC20
See NS Package Number
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C1996 National Semiconductor Corporation
TL/F/11609
RRD-B30M17/Printed in U. S. A.
http://www.national.com
74LVX240 Low Voltage Octal Buffer/Line Driver with TRI-STATE Outputs
January 1996
Absolute Maximum Ratings (Note)
Recommended Operating
Conditions
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (VCC)
2.0V to 3.6V
0V to 5.5V
0V to VCC
b 40§ C to a 85§ C
0 ns/V to 100 ns/V
Input Voltage (VI)
Output Voltage (VO)
Operating Temperature (TA)
Input Rise and Fall Time (Dt/DV)
b 0.5V to a 7.0V
Supply Voltage (VCC)
DC Input Diode Current (IIK)
b 20 mA
VI e b0.5V
b 0.5V to 7V
DC Input Voltage (VI)
DC Output Diode Current (IOK)
b 20 mA
VO e b0.5V
a 20 mA
VO e VCC a 0.5V
b 0.5V to VCC a 0.5V
DC Output Voltage (VO)
DC Output Source
g 25 mA
or Sink Current (IO)
DC VCC or Ground Current
g 75 mA
(ICC or IGND)
b 65§ C to a 150§ C
Storage Temperature (TSTG)
180 mW
Power Dissipation (PD)
Note: Absolute Maximum Ratings are those values beyond
which the safety to the device cannot be guaranteed. The
device should not be operated at these limits. The parametric values defined in the ‘‘Electrical Characteristics’’ table
are not guaranteed at the absolute maximum ratings. The
‘‘Recommended Operarting Conditions’’ table will define
the conditions for actual device operation.
DC Electrical Characteristics
Symbol
Parameter
VCC
74LVX240
74LVX240
TA e a 25§ C
TA e
b 40§ C to a 85§ C
Min
VIH
High Level
Input
Voltage
2.0
3.0
3.6
Low Level
Input
Voltage
2.0
3.0
3.6
High Level
Output
Voltage
2.0
3.0
3.0
Low Level
Output
Voltage
2.0
3.0
3.0
TRISTATE
Output
Off-State
Current
3.6
IIN
Input
Leakage
Current
3.6
ICC
Quiescent
Supply
Current
3.6
VIL
VOH
VOL
IOZ
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Typ
Max
1.5
2.0
2.4
Min
1.5
2.0
2.4
2.0
3.0
0.0
0.0
Conditions
Max
V
0.5
0.8
0.8
1.9
2.9
2.58
Units
0.5
0.8
0.8
1.9
2.9
2.48
V
VIN e VIH or VIL
IOH e b50 mA
IOH e b50 mA
IOH e b4 mA
VIN e VIH or VIL
IOL e 50 mA
IOL e 50 mA
IOL e 4 mA
V
0.1
0.1
0.36
0.1
0.1
0.44
g 0.25
g 2.5
V
mA
VIN e VIH or VIL
VOUT e VCC or GND
g 0.1
g 1.0
mA
VIN e 5.5V or GND
4.0
40.0
mA
VIN e VCC or GND
2
Noise Characteristics
74LVX240
Symbol
VCC
(V)
Parameter
TA e 25§ C
Typ
Units
CL (pF)
Limit
VOLP
Quiet Output Maximum Dynamic VOL
3.3
0.5
0.8
V
50
VOLV
Quiet Output Minimum Dynamic VOL
3.3
b 0.5
b 0.8
V
50
VIHD
Minimum High Level Dynamic Input Voltage
3.3
2.0
V
50
VILD
Maximum Low Level Dynamic Input Voltage
3.3
0.8
V
50
Note: (Input tr e tf e 3 ns)
AC Electrical Characteristics
Symbol
VCC
(V)
Parameter
74LVX240
74LVX240
TA e a 25§ C
TA e
b 40§ C to a 85§ C
Min
tPLH,
tPHL
Propagation
Delay Time
2.7
3.3 g 0.3
tPZL,
tPZH
TRI-STATE Output
Enable Time
2.7
TRI-STATE Output
Disable Time
tOSLH
tOSHL
Output to Output
Skew (Note 1)
Max
Min
Max
5.7
10.1
1.0
12.5
8.2
13.6
1.0
16.0
Conditions
CL e 15 pF
ns
CL e 50 pF
4.3
6.2
1.0
7.5
CL e 15 pF
6.8
9.7
1.0
11.0
CL e 50 pF
7.1
13.8
1.0
16.5
CL e 15 pF, RL e 1 kX
9.6
17.3
1.0
20.0
ns
CL e 50 pF, RL e 1 kX
5.5
8.8
1.0
10.5
CL e 15 pF, RL e 1 kX
8.0
12.3
1.0
14.0
CL e 50 pF, RL e 1 kX
2.7
11.6
16.0
1.0
19.0
3.3 g 0.3
9.7
11.4
1.0
13.0
3.3 g 0.3
tPLZ,
tPHZ
Typ
Units
2.7
1.5
1.5
ns
CL e 50 pF, RL e 1 kX
CL e 50 pF, RL e 1 kX
ns
CL e 50 pF
Note 1: Parameter guaranteed by design. tOSLH e l tPLHm b tPLHn l , tOSHL e l tPHLm b tPHLn l
Capacitance
Symbol
Parameter
Min
74LVX240
74LVX240
TA e a 25§ C
TA e
b 40§ C to a 85§ C
Typ
Max
10
CIN
Input Capacitance
4
COUT
Output Capacitance
6
CPD
Power Dissipation
Capacitance (Note 1)
17
Min
Units
Max
10
pF
pF
10
pF
Note 1: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption
without load.
CPD c VCC c fIN a ICC
Average operating current can be obtained by the equation: ICC(opr.) e
8 (per bit)
3
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74LVX240 Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows:
74LVX
240
M
Temperature Range Family
74 e Commercial
Special Variations
‘‘X’’ e Tape and Reel
‘‘ ’’ e Rail/Tube
Device Type
Package Code
M e Molded Small Outline Package, JEDEC
SJ e (0.300× Wide) Molded Small Outline Package, EIAJ
MSC e Shrink Small Outline Package, EIAJ, Type I
MTC e Thin Shrink Small Outline Package, JEDEC, 4.4 mm Body
Width
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (M)
Order Number 74LVX240M or 74LVX240MX
NS Package Number M20B
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X
4
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Small Outline Package EIAJ SOIC (SJ)
Order Number 74LVX240SJ or 74LVX240SJX
NS Package Number M20D
5
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74LVX240 Low Voltage Octal Buffer/Line Driver with TRI-STATE Outputs
Physical Dimensions millimeters (Continued)
20-Lead Thin Shrink Small Outline Package, JEDEC
Order Number 74LVX244MTC or 74LVX244MTCX
NS Package Number MTC20
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