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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
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is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
Revised April 2005
74LVX245
Low Voltage Octal Bidirectional Transceiver
General Description
Features
The LVX245 contains eight non-inverting bidirectional buffers and is intended for bus-oriented applications. The
Transmit/Receive (T/R) input determines the direction of
data flow through the bidirectional transceiver. Transmit
(active-HIGH) enables data from A ports to B ports;
Receive (active-LOW) enables data from B ports to A
ports. The Output Enable input, when HIGH, disables both
A and B ports by placing them in a high impedance condition.
■ Ideal for low power/low noise 3.3V applications
■ Guaranteed simultaneous switching noise level and
dynamic threshold performance
Ordering Code
Order Number
74LVX245M
74LVX245SJ
74LVX245MTC
Package Number
Package Description
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
M20D
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Logic Symbols
Connection Diagram
Pin Descriptions
Truth Table
Pin
Names
Inputs
Description
Outputs
OE
T/R
OE
Output Enable Input
L
L
Bus B Data to Bus A
T/R
Transmit/Receive Input
L
H
Bus A Data to Bus B
A0–A7
Side A Inputs or 3-STATE Outputs
H
X
HIGH-Z State
B0–B7
Side B Inputs or 3-STATE Outputs
H HIGH Voltage Level
L LOW Voltage Level
© 2005 Fairchild Semiconductor Corporation
DS011597
X
Immaterial
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74LVX245 Low Voltage Octal Bidirectional Transceiver
April 1993
74LVX245
Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions (Note 2)
0.5V to 7.0V
Supply Voltage (VCC)
DC Input Diode Current (IIK)
VI
Supply Voltage (VCC)
0.5V
20 mA
0.5V to 7V
DC Input Voltage T/R, OE (VI)
0V to VCC
40qC to 85qC
Operating Temperature (TA)
0.5V
VCC 0.5V
VO
0V to 5.5V
Bus I/O Voltage (VI/O)
DC Diode Current (IOK)
VO
2.0V to 3.6V
Input Voltage T/R, OE (VI)
20 mA
20 mA
0.5V to VCC 0.5V
DC Bus I/O Voltage (VI/O)
Input Rise and Fall Time ('t/'V)
DC Output Source
Note 1: 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.
r25 mA
or Sink Current (IO)
DC VCC or Ground Current
r75 mA
65qC to 150qC
(ICC or IGND)
Storage Temperature (TSTG)
Power Dissipation
0 ns/V to 100 ns/V
Note 2: Unused inputs must be held HIGH or LOW. They may not float.
180 mW
DC Electrical Characteristics
Symbol
VIH
VIL
VOH
VOL
IOZ
Parameter
HIGH Level
TA
VCC
Min
2.0
25qC
Typ
40qC to 85qC
TA
Max
Min
1.5
Units
Max
Conditions
1.5
Input
3.0
2.0
2.0
Voltage
3.6
2.4
2.4
V
LOW Level
2.0
0.5
Input
3.0
0.8
0.5
0.8
Voltage
3.6
0.8
0.8
HIGH Level
2.0
1.9
2.0
1.9
Output
3.0
2.9
3.0
2.9
Voltage
3.0
2.58
LOW Level
2.0
0.0
Output
3.0
0.0
0.1
0.1
Voltage
3.0
0.36
0.44
3-STATE
3.6
r0.25
r2.5
V
VIN
VIH or VIL IOH
50 PA
IOH
50 PA
V
2.48
IOH
0.1
0.1
VIN
50 PA
IOL
50 PA
IOL
4 mA
V
PA
Output
VIN
4 mA
VIH or VIL IOL
VIH or VIL
VOUT
VCC or GND
Off-State Current
IIN
Input Leakage Current
3.6
r0.1
r1.0
PA
VIN
5.5V or GND
ICC
Quiescent Supply Current
3.6
4.0
40.0
PA
VIN
VCC or GND
Noise Characteristics
Symbol
(Note 3)
VCC
Parameter
TA
25qC
(V)
Typ
Limit
Units
Conditions
CL (pF)
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
Note 3: Input tr
tf
3 ns
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2
Symbol
tPLH
VCC
Parameter
(V)
25qC
TA
Max
Min
Max
2.7
6.1
10.7
1.0
13.5
8.6
14.2
1.0
17.0
3.3 r 0.3
4.7
6.8
1.0
8.0
7.2
10.1
1.0
9.0
16.9
11.5
tPHL
tPZL
3-STATE Output
tPZH
Enable Time
TA 40qC to 85qC
Typ
Propagation Delay Time
Min
Units
Conditions
CL
15 pF
CL
50 pF
CL
15 pF
11.5
CL
50 pF
1.0
20.5
CL
15 pF, RL
1 k:
20.4
1.0
24.0
CL
50 pF, RL
1 k:
7.1
11.0
1.0
13.0
CL
15 pF, RL
1 k:
9.6
14.5
1.0
16.5
CL
50 pF, RL
1 k:
2.7
11.5
18.0
1.0
21.0
CL
50 pF, RL
1 k:
3.3 r 0.3
9.6
12.8
1.0
14.5
CL
50 pF, RL
1 k:
CL
50 pF (Note 4)
2.7
3.3 r 0.3
tPLZ
3-STATE Output
tPHZ
Disable Time
tOSLH
Output to Output Skew
2.7
tOSHL
(Note 4)
3.3
Note 4: Parameter guaranteed by design. tOSLH
|tPLHm tPLHn|, tOSHL
1.5
1.5
1.5
1.5
ns
ns
ns
ns
|t PHLm t PHLn|
Capacitance
Symbol
TA
Parameter
Min
25qC
TA
Typ
Max
10
40qC to 85qC
Min
Units
Max
CIN
Input Capacitance T/R, OE
4
CI/O
Output Capacitance An, Bn
8
pF
CPD
Power Dissipation Capacitance (Note 5)
21
pF
10
pF
Note 5: CPD 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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74LVX245
AC Electrical Characteristics
74LVX245
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package Number M20B
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4
74LVX245
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M20D
5
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74LVX245 Low Voltage Octal Bidirectional Transceiver
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 not assume any responsibility for use of any circuitry 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:
2. A critical component in any component of a life support
device or system whose failure to perform can be reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
1. Life support devices or systems are devices or systems
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 reasonably expected to result in a significant injury to the
user.
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6
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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