Is Now Part of
To learn more about ON Semiconductor, please visit our website at
www.onsemi.com
Please note: As part of the Fairchild Semiconductor integration, some of the Fairchild orderable part numbers
will need to change in order to meet ON Semiconductor’s system requirements. Since the ON Semiconductor
product management systems do not have the ability to manage part nomenclature that utilizes an underscore
(_), the underscore (_) in the Fairchild part numbers will be changed to a dash (-). This document may contain
device numbers with an underscore (_). Please check the ON Semiconductor website to verify the updated
device numbers. The most current and up-to-date ordering information can be found at www.onsemi.com. Please
email any questions regarding the system integration to Fairchild_questions@onsemi.com.
ON Semiconductor and the ON Semiconductor logo 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.
74LCX125
Low Voltage Quad Buffer with 5V Tolerant
Inputs and Outputs
Features
General Description
■ 5V tolerant inputs and outputs
The LCX125 contains four independent non-inverting
buffers with 3-STATE outputs. The inputs tolerate voltages up to 7V allowing the interface of 5V systems to 3V
systems.
■ 2.3V–3.6V VCC specifications provided
■ 6.0ns tPD max. (VCC = 3.3V), 10µA ICC max.
■ Power down high impedance inputs and outputs
■ Supports live insertion/withdrawal(1)
■ ±24mA output drive (VCC = 3.0V)
■ Implements proprietary noise/EMI reduction circuitry
The 74LCX125 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintaining CMOS low power dissipation.
■ Latch-up performance exceeds JEDEC 78 conditions
■ ESD performance:
– Human body model > 2000V
– Machine model > 100V
■ Leadless DQFN package
Note:
1. To ensure the high-impedance state during power up
or down, OE should be tied to VCC through a pull-up
resistor: the minimum value of the resistor is
determined by the current-sourcing capability of the
driver.
Ordering Information
Order Number
74LCX125M
74LCX125SJ
Package
Number
M14A
M14D
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCX125BQX(2)
MLP14A
14-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC
MO-241, 2.5 x 3.0mm
74LCX125MTC
MTC14
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
Note:
2. DQFN package available in Tape and Reel only.
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©1995 Fairchild Semiconductor Corporation
74LCX125 Rev. 1.7.1
www.fairchildsemi.com
74LCX125 — Low Voltage Quad Buffer with 5V Tolerant Inputs and Outputs
December 2013
Logic Symbol
Pin Assignments for SOIC, SOP, and TSSOP
IEEE/IEC
(Top View)
Pad Assignments for DQFN
Truth Table
Inputs
Output
OEn
An
On
L
L
L
L
H
H
H
X
Z
H = HIGH Voltage Level
L = LOW Voltage Level
Z = High Impedance
X = Immaterial
(Bottom View)
(Top Through View)
Pin Description
Pin Names
An
Description
Inputs
OEn
Output Enable Inputs
On
Outputs
DAP
No Connect
Note: DAP (Die Attach Pad)
©1995 Fairchild Semiconductor Corporation
74LCX125 Rev. 1.7.1
www.fairchildsemi.com
2
74LCX125 — Low Voltage Quad Buffer with 5V Tolerant Inputs and Outputs
Connection Diagrams
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
VCC
Parameter
Rating
Supply Voltage
–0.5V to +7.0V
VI
DC Input Voltage
–0.5V to +7.0V
VO
DC Output Voltage,
Output in 3-STATE
–0.5V to +7.0V
State(3)
–0.5V to VCC + 0.5V
IIK
DC Input Diode Current, VI < GND
–50mA
IOK
DC Output Diode Current
Output in HIGH or LOW
VO < GND
–50mA
VO > VCC
+50mA
IO
DC Output Source/Sink Current
±50mA
ICC
DC Supply Current per Supply Pin
±100mA
IGND
DC Ground Current per Ground Pin
±100mA
TSTG
Storage Temperature
–65°C to +150°C
Note:
3. IO Absolute Maximum Rating must be observed.
Recommended Operating Conditions(4)
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol
VCC
Parameter
Min.
Max.
Units
Operating
2.0
3.6
V
Data Retention
1.5
3.6
0
5.5
V
HIGH or LOW State
0
VCC
V
3-STATE
0
5.5
Supply Voltage
VI
Input Voltage
VO
Output Voltage
IOH / IOL
TA
∆t / ∆V
Output Current
VCC = 3.0V–3.6V
±24
VCC = 2.7V–3.0V
±12
VCC = 2.3V–2.7V
±8
Free-Air Operating Temperature
Input Edge Rate, VIN = 0.8V–2.0V, VCC = 3.0V
mA
–40
85
°C
0
10
ns / V
Note:
4. Unused inputs must be held HIGH or LOW. They may not float.
©1995 Fairchild Semiconductor Corporation
74LCX125 Rev. 1.7.1
www.fairchildsemi.com
3
74LCX125 — Low Voltage Quad Buffer with 5V Tolerant Inputs and Outputs
Absolute Maximum Ratings
TA = –40°C to +85°C
Symbol
VIH
VIL
VOH
VOL
Parameter
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Voltage
LOW Level Output Voltage
VCC (V)
Conditions
Min.
2.3–2.7
1.7
2.7–3.6
2.0
Max.
V
2.3–2.7
0.7
2.7–3.6
0.8
IOH = –100µA
2.3–3.6
IOH = –8mA
1.8
2.7
IOH = –12mA
2.2
3.0
IOH = –18mA
2.4
IOH = –24mA
2.2
V
IOL = 100µA
0.2
2.3
IOL = 8mA
0.6
2.7
IOL = 12mA
0.4
3.0
IOL = 16mA
0.4
IOL = 24mA
0.55
2.3–3.6
V
VCC – 0.2
2.3
Units
V
Input Leakage Current
2.3–3.6
0 ≤ VI ≤ 5.5V
±5.0
µA
IOZ
3-STATE Output Leakage
2.3–3.6
0 ≤ VO ≤ 5.5V,
VI = VIH or VIL
±5.0
µA
IOFF
Power-Off Leakage Current
0
VI or VO = 5.5V
10
µA
ICC
Quiescent Supply Current
µA
II
∆ICC
Increase in ICC per Input
2.3–3.6
2.3–3.6
VI = VCC or GND
10
3.6V ≤ VI, VO ≤ 5.5V(5)
±10
VIH = VCC – 0.6V
500
µA
Note:
5. Outputs disabled or 3-STATE only.
AC Electrical Characteristics
TA = –40°C to +85°C, RL = 500Ω
VCC = 3.3V ± 0.3V,
CL = 50 pF
Symbol
Parameter
VCC = 2.7V,
CL = 50 pF
VCC = 2.5V ± 0.2V,
CL = 30 pF
Min.
Max.
Min.
Max.
Min.
Max.
Units
1.5
6.0
1.5
6.5
1.5
7.2
ns
tPHL, tPLH
Propagation Delay
tPZL, tPZH
Output Enable Time
1.5
7.0
1.5
8.0
1.5
9.1
ns
tPLZ, tPHZ
Output Disable Time
1.5
6.0
1.5
7.0
1.5
7.2
ns
tOSHL, tOSLH Output to Output
Skew(6)
1.0
ns
Note:
6. Skew is defined as the absolute value of the difference between the actual propagation delay for any two
separate outputs of the same device. The specification applies to any outputs switching in the same direction,
either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH).
©1995 Fairchild Semiconductor Corporation
74LCX125 Rev. 1.7.1
www.fairchildsemi.com
4
74LCX125 — Low Voltage Quad Buffer with 5V Tolerant Inputs and Outputs
DC Electrical Characteristics
TA = 25°C
Symbol
Parameter
VCC (V)
VOLP
Quiet Output Dynamic Peak VOL
3.3
VOLV
Quiet Output Dynamic Valley VOL
Conditions
Typical
Unit
CL = 50pF, VIH = 3.3V, VIL = 0V
0.8
V
2.5
CL = 30pF, VIH = 2.5V, VIL = 0V
0.6
3.3
CL = 50pF, VIH = 3.3V, VIL = 0V
–0.8
2.5
CL = 30pF, VIH = 2.5V, VIL = 0V
–0.6
V
Capacitance
Symbol
Typical
Units
Input Capacitance
VCC = Open, VI = 0V or VCC
7.0
pF
COUT
Output Capacitance
VCC = 3.3V, VI = 0V or VCC
8.0
pF
CPD
Power Dissipation Capacitance
VCC = 3.3V, VI = 0V or VCC, f = 10MHz
25.0
pF
CIN
Parameter
©1995 Fairchild Semiconductor Corporation
74LCX125 Rev. 1.7.1
Conditions
www.fairchildsemi.com
5
74LCX125 — Low Voltage Quad Buffer with 5V Tolerant Inputs and Outputs
Dynamic Switching Characteristics
Test
Switch
tPLH, tPHL
Open
tPZL, tPLZ
6V at VCC = 3.3 ± 0.3V
VCC x 2 at VCC = 2.5 ± 0.2V
tPZH, tPHZ
GND
Figure 1. AC Test Circuit (CL includes probe and jig capacitance)
Waveform for Inverting and Non-Inverting Functions
3-STATE Output High Enable and
Disable Times for Logic
Propagation Delay. Pulse Width and trec Waveforms
Setup Time, Hold Time and Recovery Time for Logic
3-STATE Output Low Enable and
Disable Times for Logic
trise and tfall
VCC
Symbol
3.3V ± 0.3V
2.7V
2.5V ± 0.2V
Vmi
1.5V
1.5V
VCC / 2
Vmo
1.5V
1.5V
VCC / 2
Vx
VOL + 0.3V
VOL + 0.3V
VOL + 0.15V
Vy
VOH – 0.3V
VOH – 0.3V
VOH – 0.15V
Figure 2. Waveforms (Input Characteristics; f = 1MHz, tr = tf = 3ns)
©1995 Fairchild Semiconductor Corporation
74LCX125 Rev. 1.7.1
www.fairchildsemi.com
6
74LCX125 — Low Voltage Quad Buffer with 5V Tolerant Inputs and Outputs
AC Loading and Waveforms (Generic for LCX Family)
74LCX125 — Low Voltage Quad Buffer with 5V Tolerant Inputs and Outputs
Schematic Diagram (Generic for LCX Family)
©1995 Fairchild Semiconductor Corporation
74LCX125 Rev. 1.7.1
www.fairchildsemi.com
7
Tape Format for DQFN
Package Designator
Tape Section
Number of Cavities
Cavity Status
Cover Tape Status
BQX
Leader (Start End)
125 (Typ.)
Empty
Sealed
Carrier
3000
Filled
Sealed
Trailer (Hub End)
75 (Typ.)
Empty
Sealed
Tape Dimensions inches (millimeters)
Reel Dimensions inches (millimeters)
Tape Size
A
B
C
D
N
W1
W2
12mm
13.0 (330.0)
0.059 (1.50)
0.512 (13.00)
0.795 (20.20)
2.165 (55.00)
0.488 (12.4)
0.724 (18.4)
©1995 Fairchild Semiconductor Corporation
74LCX125 Rev. 1.7.1
www.fairchildsemi.com
8
74LCX125 — Low Voltage Quad Buffer with 5V Tolerant Inputs and Outputs
Tape and Reel Specification
0.65
A
0.43TYP
14
8
B
6.4
6.10
3.2
1
PIN#1 IDENT
0.2 C B A
7
TOP VIEW
1.65
ALL LEAD TIPS
0.45
RECOMMENDED LAND PATTERN
1.2 MAX
0.30
0.19
ALL LEAD TIPS
0.1 C
0.65
SEE DETAIL A
0.90+0.15
-0.10
0.13
A B
0.20
0.09
C
C
FRONT VIEW
0.09 MIN
NOTES:
A. CONFORMS TO JEDEC REGISTRATION MO-153,
VARIATION AB, REF NOTE 6
B. DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS ARE EXCLUSIVE OF BURRS,
MOLD FLASH, AND TIE BAR EXTRUSIONS
D. DIMENSIONING AND TOLERANCES PER ANSI
Y14.5M, 2009.
E. LANDPATTERN STANDARD: SOP65P640X110-14M.
F. DRAWING FILE NAME: MKT-MTC14rev7.
GAGE PLANE
0.09 MIN
1.00
0.25
SEATING PLANE
DETAIL A
8.75
8.50
A
7.62
14
8
14
B
0.65
8
4.00
3.80
6.00
1
PIN #1
IDENT.
1.27
(0.33)
TOP VIEW
5.60
7
0.51
0.35
0.25 M C B A
1.75 MAX
1.70
1
1.27
LAND PATTERN RECOMMENDATION
A
C
1.50
1.25
FRONT VIEW
0.25
0.10
0.50
0.25 x 45
R0.10
GAGE
PLANE
R0.10
0.36
8°
0°
0.90
0.50
(1.04)
0.10 C
0.25
0.19
SIDE VIEW
NOTES:
A. CONFORMS TO JEDEC MS-012,
VARIATION AB, ISSUE C
B. ALL DIMENSIONS ARE IN MILLIMETERS
C. DIMENSIONS DO NOT INCLUDE MOLD
FLASH OR BURRS
D. LAND PATTERN STANDARD:
SOIC127P600X145-14M
E. CONFORMS TO ASME Y14.5M, 2009
D. DRAWING FILENAME: MKT-M14Arev14
SEATING PLANE
DETAIL A
SCALE 16 : 1
7
0.05 C
4.00 MAX
2.20 MAX
1.40 MAX
B
3.00
A
2X
1.00
MAX
2.50
1.70
MAX
0.50 TYP
3.50
MAX
0.05 C
PIN #1 QUADRANT
TOP VIEW
(0.90)
2X
0.50 TYP
0.24 TYP
RECOMMENDED LAND PATTERN
0.10 C
0.08 C
SEATING
PLANE
C
SIDE VIEW
A. CONFORMS TO JEDEC REGISTRATION
MO-241, VARIATION AA
B. DIMENSIONS ARE IN MILLIMETERS.
(14X)
PIN #1 IDENT
C. DIMENSIONS AND TOLERANCES PER
ASME Y14.5M, 2009.
D. LAND PATTERN RECOMMENDATION IS
EXISTING INDUSTRY LAND PATTERN.
E. DRAWING FILENAME: MKT-MLP14Arev2.
0.50
0.50
(14X)
2.00
BOTTOM VIEW
0.10
0.05
C A B
C
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.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
19521 E. 32nd Pkwy, Aurora, Colorado 80011 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
© Semiconductor Components Industries, LLC
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
Japan Customer Focus Center
Phone: 81−3−5817−1050
www.onsemi.com
1
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
www.onsemi.com