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© 2005 Fairchild Semiconductor Corporation DS01 1552 www.fairchildsemi.com
Februa ry 199 3
Revised April 2005
74LVX244 Low Voltage Octal Buffer/Line Driver with 3-STATE Outputs
74LVX244
Low Voltage Octal Buffer/Line Driver with
3-STATE Outputs
General Descript ion
The LVX2 44 is an octal non-inve rting buffer an d line driver
designed to be employed as a memory address driver,
clock drive r and bu s oriented transmitter or receive r which
provides improved PC board density . The inputs tolerate up
to 7V allowing interface of 5V systems to 3V systems.
Features
■Input voltage translation from 5V to 3V
■Ideal for low power/low noise 3.3V applications
■Guaranteed simultaneous switching noise level and
dynamic thresh ol d per for man ce
Ordering Code:
Devices also available in Tape and R eel. Sp ec if y by appending suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Logic Symbol
IEEE/IEC
Connection Diagram
Pin Descriptions
Truth Tables
H
HIGH Voltage Leve l L
LOW Voltage Lev el
X
Immaterial Z
High Impedance
Order Number Package Number Package Description
74LVX244M M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LVX244SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIA J TYPE II, 5.3mm Wide
74LVX244MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names Description
OE1, OE23-STATE Output En ab le Inputs
I0–I7Inputs
O0–O7Outputs
Inputs Outputs
OE1In(Pins 12, 14, 16, 18)
LL L
LH H
HX Z
Inputs Outputs
OE2In(Pin s 3, 5, 7, 9)
LL L
LH H
HX Z
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74LVX244
Absolute Maximum Ratings(No t e 1) Recommended Operating
Conditions (Note 2)
Note 1: The “Absolute Maxim um Ratings” are those values be yond which
the saf ety 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 “R ecomm ended Ope rating Condition s” tabl e will d efine th e cond itions
for actu al device operation.
Note 2: Unu s ed inputs must be held HIGH or LOW. They m ay not float.
DC Electrical Characteristics
Noise Characteristics (Note 3)
Note 3: Input tr
tf
3 ns
Supply Voltage (VCC)
0.5V to
7.0V
DC Input Diode Current (IIK)
VI
0.5V
20 mA
DC Input Voltage (VI)
0.5V to 7V
DC Output Diode Current (IOK)
VO
0.5V
20 mA
VO
VCC
0.5V
20 mA
DC Output Voltage (VO)
0.5V to VCC
0.5V
DC Output Source
or Sink Current (IO)
r
25 mA
DC VCC or Ground Current
(ICC or IGND)
r
75 mA
Storage Tem per atu re (TSTG)
65
q
C to
150
q
C
Power Dissipation 180 mW
Supply Voltage (VCC) 2.0V to 3.6V
Input Voltage (VI)0V to 5.5V
Output Voltage (Vo) 0V to VCC
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 VCC TA
25
q
CT
A
40
q
C to
85
q
CUnits Conditions
Min Typ Max Min Max
VIH HIGH Level Input 2.0 1.5 1.5
Voltage 3.0 2.0 2.0 V
3.6 2.4 2.4
VIL LOW Level Input 2.0 0.5 0.5
Voltage 3.0 0.8 0.8 V
3.6 0.8 0.8
VOH HIGH Level Output 2.0 1.9 2.0 1.9 VIN
VIH or VIL IOH
50
P
A
Voltage 3.0 2.9 3.0 2.9 V IOH
50
P
A
3.0 2.58 2.48 IOH
4 mA
VOL LOW Level Output 2.0 0.0 0.1 0.1 VIN
VIH or VIL IOL
50
P
A
Voltage 3.0 0.0 0.1 0.1 V IOL
50
P
A
3.0 0.36 0.44 IOL
4 mA
IOZ 3-STATE Output 3.6
r
0.25
r
2.5
P
AV
IN
VIH or VIL
Off-State Current VOUT
VCC or GND
IIN Input Leakage Current 3.6
r
0.1
r
1.0
P
AV
IN
5.5V or GND
ICC Qui escent Supply Current 3.6 4.0 40.0
P
AV
IN
VCC or GND
Symbol Parameter VCC TA
25
q
CUnits CL (pF)
(V) Typ Limit
VOLP Quiet Output Maximum Dynamic VOL 3.3 0.5 0.8 V 50
VOLV Quiet Output Minimum Dynamic VOL 3.3
0.5
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
3 www.fairchildsemi.com
74LVX244
AC Electrical Characteristics
Note 4: Parameter guaranteed by design. tOSLH
|tPLHm
tPLHn|, tOSHL
|tPHLm
tPHLn|
Capacitance
Note 5: CPD is defined as t he v alue of the int ernal equiv alent capacitanc e which is cal cu l ated from the operating current cons umption w ithout load.
Symbol Parameter VCC TA
25
q
CT
A
40
q
C to
85
q
CUnits Conditions
(V) Min Typ Max Min Max
tPLH Propagati on Delay 2.7 6.1 11.4 1.0 13.5
ns
CL
15 pF
tPHL Time 8.614.91.017.0 C
L
50 pF
3.3
r
0.3 4.7 7.1 1.0 8.5 CL
15 pF
7.210.61.012.0 C
L
50 pF
tPZL 3-STATE Output 2.7 7.1 13.8 1.0 16.5
ns
CL
15 pF,
tPZH Enable Time RL
1 k
:
9.617.31.020.0 C
L
50 pF,
RL
1 k
:
3.3
r
0.3 5.5 8.8 1.0 10.5 CL
15 pF,
RL
1 k
:
8.012.31.014.0 C
L
50 pF,
RL
1 k
:
tPLZ 3-STATE Output 2.7 11.6 16.0 1.0 19.0 ns CL
50 pF,
tPHZ Disable Time 3.3
r
0.3 9.7 11.4 1.0 13.0 RL
1 k
:
tOSLH Output to Output 2.7 1.5 1.5 ns CL
50 pF
tOSHL Skew (Note 4) 3.3 1.5 1.5
Symbol Parameter TA
25
q
CT
A
40
q
C to
85
q
CUnits
Min Typ Max Min Max
CIN Input Capacitance 4 10 10 pF
COUT Output Capacitance 6 pF
CPD Power Dissipation Capacitance (Note 5) 19 pF
www.fairchildsemi.com 4
74LVX244
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package Number M20B
5 www.fairchildsemi.com
74LVX244
Physical Dim ensions inches (millimeters) unless otherwise noted (Continued)
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M20D
www.fairchildsemi.com 6
74LVX244 Low Voltage Octal Buffer/Line Dri ver with 3-STATE Outputs
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC20
Fairchild does no t assume any responsibility for use of any circui try described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life suppor t de vices o r systems a re devices or syste ms
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical compon ent in any componen t of a life support
device or system whose failure to perform can be rea-
sonabl y ex pect ed to cause the fa ilu re of the lif e su pp ort
device or system, or to affect it s safety or effectiveness.
www.fairchildsemi.com
www.onsemi.com
1
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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