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Is Now
To learn more about onsemi™, please visit our website at
www.onsemi.com
onsemi and and other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates and/or
subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of onsemi
product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. onsemi reserves the right to make changes at any time to any products or information herein, without
notice. The information herein is provided “as-is” and onsemi makes no warranty, representation or guarantee regarding the accuracy of the information, product features, availability, functionality,
or suitability of its products for any particular purpose, nor does onsemi 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 onsemi products, including compliance with all laws,
regulations and safety requirements or standards, regardless of any support or applications information provided by onsemi. “Typical” parameters which may be provided in onsemi 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. onsemi does not convey any license under any of its intellectual property rights nor the rights of others. onsemi 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 onsemi products for any such unintended or unauthorized application, Buyer shall indemnify and hold onsemi 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 onsemi was negligent regarding the design or manufacture of the part. onsemi is an Equal Opportunity/Affirmative
Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. Other names and brands may be claimed as the property of others.
CAT5110, CAT5118,
CAT5119, CAT5123,
CAT5124, CAT5125
32‐tap Digital
Potentiometers (POTs)
with 2‐wire Interface
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Description
CAT5110/18/19/23/24/25 linear-taper digital POTs perform the
same function as a mechanical potentiometer or a variable resistor.
These devices consist of a fixed resistor and a wiper contact with
32-tap points that are digitally controlled through a 2-wire up/down
serial interface.
The CAT5110 and CAT5125 are configured as potentiometers. The
CAT5118/19/23/24 are configured as variable resistors.
Three resistance values are available: 10 kW, 50 kW and 100 kW. All
devices are available in space-saving 5-pin and 6-pin SOT−23
packages. The CAT5110/18/19 are also available in the SC−70
package.
SC−70
SD SUFFIX
CASE 419AD
SOT−23
TB SUFFIX
CASE 527AJ
SC−70
SD SUFFIX
CASE 419AC
SOT−23
TB SUFFIX
CASE 527AH
PIN CONNECTIONS
Features
0.3 mA Ultra-low Standby Current
Single-supply Operation: 2.7 V to 5.5 V
Glitchless Switching between Resistor Taps
Power-on Reset to Midscale
2-wire Up/Down Serial Interface
Resistance Values: 10 kW, 50 kW and 100 kW
Low Wiper Resistance: 80 W for CAT5123, CAT5124, CAT5125
CAT5110, CAT5118, CAT5119 Available in SC−70
These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
SC−70
VDD 1
6 H
VDD 1
6 H
GND 2
5 W GND 2
5 W
CAT5110
U/D 3 CAT5125 4 CS U/D 3 CAT5110 4 CS
SOT−23
SC−70
5 H
VDD 1
GND 2
Applications
SOT−23
VDD 1
5 H
GND 2
CAT5118
U/D 3 CAT5123 4 CS U/D 3 CAT5118 4 CS
LCD Screen Adjustment
Volume Control
Mechanical Potentiometer Replacement
Gain Adjustment
Line Impedance Matching
SOT−23
SC−70
VDD 1
6 H
VDD 1
6 H
GND 2
5 L
GND 2
5 L
CAT5119
CAT5119 4 CS
U/D 3 CAT5124 4 CS U/D 3
(Top Views)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
Semiconductor Components Industries, LLC, 2013
June, 2013 − Rev. 13
1
Publication Order Number:
CAT5110/D
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
H
VDD
U/D
32−POSITION
DECODER
CS
UP−DOWN
COUNTER
GND
W
L
Figure 1. Functional Diagram
Table 1. PIN DESCRIPTIONS
Pin Number
CAT5110/
CAT5125
CAT5118/
CAT5123
CAT5119/
CAT5124
Pin
Name
1
1
1
VDD
Power Supply
2
2
2
GND
Ground
3
3
3
U/D
Up/Down Control Input. With CS low, a low-to-high transition increments
or decrements the wiper position.
4
4
4
CS
Chip Select Input. A high-to-low CS transition determines the mode:
increment if U/D is high, or decrement if U/D is low.
−
−
5
L
Low Terminal of Resistor
5
−
−
W
Wiper Terminal of Resistor
6
6
6
H
High Terminal of Resistor
Description
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameters
VDD to GND
All Other Pins to GND
Ratings
Units
−0.3 to +6
V
−0.3 to (VDD + 0.3)
V
Input and Output Latch−Up Immunity
200
mA
Maximum Continuous Current into H, L and W
100 kW
50 kW
10 kW
0.6
1.3
1.3
Continuous Power Dissipation (TA = +70C)
5-pin SC−70 (Note 1)
6-pin SC−70 (Note 1)
247
245
mA
Operating Temperature Range
Junction Temperature
Storage Temperature Range
Soldering Temperature (soldering, 10 sec)
mW
−40 to +85
C
+150
C
−65 to +150
C
+300
C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Derate 3.1 mW/C above TA = +70C
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2
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Table 3. ELECTRICAL CHARACTERISTICS
(VDD = 2.7 V to 5.5 V, VH = VDD, VL = 0, TA = −40C to +85C. Typical values are at VDD = 2.7 V, TA = 25C, unless otherwise noted.)
Parameter
Symbol
Conditions
Min
Typ
Max
Units
DC PERFORMANCE
Resolution
32
End-to-End Resistance (−00)
80
100
120
End-to-End Resistance (−50)
40
50
60
End-to-End Resistance (−10)
8
10
12
End-to-End Resistance Tempco
TCR
Taps
CAT5110/18/19
200
CAT5123/24/25
30
Ratiometric Resistance Tempco
ppm/C
300
5
Integral Nonlinearity
INL
Differential Nonlinearity
DNL
0.5
Full-Scale Error
ppm/C
1
LSB
1
LSB
LSB
0.1
Zero-Scale Error
Wiper Resistance
RW
kW
1
LSB
W
CAT5110/18/19
200
600
CAT5123/24/25
80
200
DIGITAL INPUTS
Input High Voltage
VIH
Input Low Voltage
VIL
0.7 x VDD
V
0.3 x VDD
V
TIMING CHARACTERISTICS (Figures 7, 8)
U/D Mode to CS Setup
tCU
25
ns
CS to U/D Step Setup
tCI
50
ns
CS to U/D Step Hold
tIC
25
ns
U/D Step Low Period
tIL
25
ns
U/D Step High Period
tIH
25
ns
Up/Down Toggle Rate (Note 2)
fTOGGLE
Output Settling Time (Note 3)
tSETTLE
1
MHz
100 kW variable resistor
configuration, CL = 10 pF
1
ms
100 kW potentiometer
configuration, CL = 10 pF
0.25
POWER SUPPLY
Supply Voltage
VDD
Active Supply Current (Note 4)
IDD
Standby Supply Current (Note 5)
ISB
2.
3.
4.
5.
2.7
VDD = +5 V
Up/Down Toggle Rate: fTOGGLE = 1 / tSETTLE
Typical settling times are dependent on end-to-end resistance.
Supply current measureed while changing wiper tap, fTOGGLE = 1 MHz.
Supply current measureed while wiper position is fixed.
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3
0.3
5.5
V
25
mA
1
mA
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
TYPICAL OPERATING CHARACTERISTICS
(TA = 25C, unless otherwise noted.)
160
140
END−TO−END RESISTANCE
CHANGE (%)
1.5
CAT5110/5118/5119
RW (W)
120
100
80
60
CAT5123/5124/5125
40
20
0
VDD = 2.7 V
0
5
10
15
20
25
CAT5123/5124/5125
0
−0.5
CAT5110/5118/5119
−1.0
0
50
100
WIPER POSITION
TEMPERATURE (C)
Figure 2. Wiper Resistance vs. Wiper Position
Figure 3. Change in End-to-End Resistance vs.
Temperature
0.45
0.40
100
80
60
50 k
40
VDD = 5.5 V
0.35
100 k
CURRENT (mA)
RESISTANCE (kW)
0.5
−1.5
−50
30
120
0.30
VDD = 2.7 V
0.25
0.20
0.15
0.10
20
0
1.0
10 k
1 3
5
7
0.05
0
−50
9 11 13 15 17 19 21 23 25 27 29 31
0
50
100
TAP POSITION
TEMPERATURE (C)
Figure 4. W-to-L Resistance vs. Tap Position
Figure 5. Supply Current vs. Temperature
U/D
2 V/div
WIPER
OUTPUT
100 mV/div
200 ns/div
Figure 6. Tap-to-Tap Switching Transient
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4
150
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
FUNCTIONAL DESCRIPTION
The CAT5110/5118/5119/5123/5124/5125 consist of a
fixed resistor and a wiper contact with 32−tap points that are
digitally controlled through a 2-wire up/down serial
interface. Three end-to-end resistance values are available:
10 kW, 50 kW and 100 kW.
The CAT5110/5125 is designed to operate as a
potentiometer. In this configuration, the low terminal of the
resistor array is connected to ground (pin 2).
The CAT5118/5123 performs as a variable resistor. In this
device, the wiper terminal and high terminal of the resistor
array are connected at pin 5. The CAT5119/5124 is a similar
variable resistor, except the low terminal is connected to
pin 5.
The CS and U/D inputs control the position of the wiper
along the resistor array. When CS transitions from high to
low, the part will go into increment mode if U/D input is
high, and into decrement mode when U/D input is low. Once
the mode is set, the device will remain in that mode until CS
goes high again. A low-to-high transition at the U/D pin will
increment or decrement the wiper position depending on the
current mode (Figures 7 and 8).
When the CS input transitions to high (serial interface
inactive), the value of the counter is stored and the wiper
position is maintained.
Note that when the wiper reaches the maximum (or
minimum) tap position, the wiper will not wrap around to the
minimum (or maximum) position.
Digital Interface Operation
The devices have two modes of operation when the serial
interface is active: increment and decrement mode. The
serial interface is only active when CS is low.
Power-On Reset
All parts in this family feature power-on reset (POR)
circuitry that sets the wiper position to midscale at
power-up. By default, the chip is in the increment mode.
CS
tCU
tIC
tIL
U/D
tIH
tCI
tSETTLE
tSETTLE
W
Note: “W” is not a digital signal. It represents wiper transitions.
Figure 7. Serial Interface Timing Diagram, Increment Mode
CS
tCU
tIC
tIH
U/D
tIL
W
tCI
tSETTLE
tSETTLE
Note: “W” is not a digital signal. It represents wiper transitions.
Figure 8. Serial Interface Timing Diagram, Decrement Mode
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5
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
APPLICATIONS INFORMATION
Adjustable Gain
The devices are intended for circuits requiring digitally
controlled adjustable resistance, such as LCD contrast
control, where voltage biasing adjusts the display contrast.
Figures 11 and 12 show how to use either a variable
resistor or a potentiometer to digitally adjust the gain of a
noninverting op amp configuration, by connecting the
devices in series with a resistor to ground. The devices have
a low 5 ppm/C ratiometric tempco that allows for a very
stable adjustable gain configuration over temperature.
Alternative Positive LCD Bias Control
An op amp can be used to provide buffering and gain on
the output of the CAT5110/CAT5125. This can be done by
connecting the wiper output to the positive input of a
noninverting op amp as shown in Figure 9. Figure 10 shows
a similar circuit for the CAT5119/CAT5124.
+5 V
+5 V
H
H
30 V
30 V
W
CAT5110/CAT5125
VOUT
VOUT
L
CAT5119/CAT5124
Figure 9. Positive LCD Bias Control
L
Figure 10. Positive LCD Bias Control
VCC
VCC
VIN
VIN
VOUT
VOUT
H
L
CAT5118/CAT5123
W
H
CAT5110/CAT5125
L
Figure 11. Adjustable Gain Circuit
Figure 12. Adjustable Gain Circuit
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6
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Table 4. ORDERING INFORMATION
Device
CAT5110
CAT5118
CAT5119
CAT5123
CAT5124
CAT5125
Pin Package
Shipping†
10
SC70−6
3000 / Tape & Reel
10
SOT23−6
3000 / Tape & Reel
CAT5110TBI−10GT3
10
SOT23−6
3000 / Tape & Reel
CAT5110SDI−50GT3
50
SC70−6
3000 / Tape & Reel
CAT5110TBI−50−T3
50
SOT23−6
3000 / Tape & Reel
CAT5110TBI−50GT3
50
SOT23−6
3000 / Tape & Reel
CAT5110SDI−00GT3
100
SC70−6
3000 / Tape & Reel
CAT5110TBI−00−T3
100
SOT23−6
3000 / Tape & Reel
Orderable Part Number
Resistor [kW]
CAT5110SDI−10GT3
CAT5110TBI−10−T3
CAT5110TBI−00GT3
100
SOT23−6
3000 / Tape & Reel
CAT5118SDI−10GT3
10
SC70−5
3000 / Tape & Reel
CAT5118TBI−10−T3
10
SOT23−5
3000 / Tape & Reel
CAT5118TBI−10GT3
10
SOT23−5
3000 / Tape & Reel
CAT5118SDI−50GT3
50
SC70−5
3000 / Tape & Reel
CAT5118TBI−50−T3
50
SOT23−5
3000 / Tape & Reel
CAT5118TBI−50GT3
50
SOT23−5
3000 / Tape & Reel
CAT5118SDI−00GT3
100
SC70−5
3000 / Tape & Reel
CAT5118TBI−00−T3
100
SOT23−5
3000 / Tape & Reel
CAT5118TBI−00GT3
100
SOT23−5
3000 / Tape & Reel
CAT5119SDI−10GT3
10
SC70−6
3000 / Tape & Reel
CAT5119TBI−10−T3
10
SOT23−6
3000 / Tape & Reel
CAT5119TBI−10GT3
10
SOT23−6
3000 / Tape & Reel
CAT5119SDI−50GT3
50
SC70−6
3000 / Tape & Reel
CAT5119TBI−50−T3
50
SOT23−6
3000 / Tape & Reel
CAT5119TBI−50GT3
50
SOT23−6
3000 / Tape & Reel
CAT5119SDI−00GT3
100
SC70−6
3000 / Tape & Reel
CAT5119TBI−00−T3
100
SOT23−6
3000 / Tape & Reel
CAT5119TBI−00GT3
100
SOT23−6
3000 / Tape & Reel
CAT5123TBI−10−T3
10
SOT23−5
3000 / Tape & Reel
CAT5123TBI−10GT3
10
SOT23−5
3000 / Tape & Reel
CAT5123TBI−50−T3 (Note 7)
50
SOT23−5
3000 / Tape & Reel
CAT5123TBI−50GT3 (Note 7)
50
SOT23−5
3000 / Tape & Reel
CAT5123TBI−00−T3 (Note 7)
100
SOT23−5
3000 / Tape & Reel
CAT5123TBI−00GT3 (Note 7)
100
SOT23−5
3000 / Tape & Reel
CAT5124TBI−10−T3 (Note 7)
10
SOT23−6
3000 / Tape & Reel
CAT5124TBI−10GT3 (Note 7)
10
SOT23−6
3000 / Tape & Reel
CAT5124TBI−50−T3
50
SOT23−6
3000 / Tape & Reel
CAT5124TBI−50GT3
50
SOT23−6
3000 / Tape & Reel
CAT5124TBI−00−T3 (Note 7)
100
SOT23−6
3000 / Tape & Reel
CAT5124TBI−00GT3 (Note 7)
100
SOT23−6
3000 / Tape & Reel
CAT5125TBI−10−T3
10
SOT23−6
3000 / Tape & Reel
CAT5125TBI−10GT3
10
SOT23−6
3000 / Tape & Reel
CAT5125TBI−50−T3 (Notes 7)
50
SOT23−6
3000 / Tape & Reel
CAT5125TBI−50GT3 (Note 7)
50
SOT23−6
3000 / Tape & Reel
CAT5125TBI−00−T3 (Notes 7)
100
SOT23−6
3000 / Tape & Reel
CAT5125TBI−00GT3 (Note 7)
100
SOT23−6
3000 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
6. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device
Nomenclature document, TND310/D, available at www.onsemi.com.
7. Contact factory for availability.
8. All packages are RoHS-compliant (Pb-Free, Halogen-Free).
9. The standard finish is NiPdAu.
10. For additional package and temperature options, please contact your nearest ON Semiconductor Sales office.
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7
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
PACKAGE DIMENSIONS
SC−88 (SC−70 6 Lead), 1.25x2
CASE 419AD
ISSUE A
D
e
e
E1 E
SYMBOL
MIN
A
0.80
MAX
1.10
A1
0.00
0.10
A2
0.80
1.00
b
0.15
0.30
c
0.10
0.18
D
1.80
2.00
2.20
E
1.80
2.10
2.40
E1
1.15
1.25
1.35
0.65 BSC
e
L
TOP VIEW
NOM
0.26
0.36
L1
0.42 REF
L2
0.15 BSC
0.46
θ
0º
8º
θ1
4º
10º
q1
A2 A
q
q1
b
L
L1
A1
SIDE VIEW
c
END VIEW
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-203.
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8
L2
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
PACKAGE DIMENSIONS
SOT−23, 6 Lead
CASE 527AJ
ISSUE B
D
A
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETERS.
3. DATUM C IS THE SEATING PLANE.
B
6
5
4
1
2
3
E
E1
GAGE
PLANE
6X
e
TOP VIEW
L2
b
0.20
SEATING
PLANE
L
M
C A
S
B
S
DETAIL A
A2
c
A
6X
0.10 C
A1
SIDE VIEW
C
SEATING
PLANE
DETAIL A
END VIEW
RECOMMENDED
SOLDERING FOOTPRINT*
3.30
6X
0.85
6X
0.56
0.95
PITCH
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
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9
DIM
A
A1
A2
b
c
D
E
E1
e
L
L2
MILLIMETERS
MIN
MAX
--1.45
0.00
0.15
0.90
1.30
0.20
0.50
0.08
0.26
2.70
3.00
2.50
3.10
1.30
1.80
0.95 BSC
0.20
0.60
0.25 BSC
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
PACKAGE DIMENSIONS
SC−88A (SC−70 5 Lead), 1.25x2
CASE 419AC
ISSUE A
SYMBOL
MIN
A
0.80
D
e
e
E1 E
MAX
1.10
A1
0.00
0.10
A2
0.80
1.00
b
0.15
0.30
c
0.10
0.18
D
1.80
2.00
2.20
E
1.80
2.10
2.40
E1
1.15
1.25
1.35
0.65 BSC
e
0.26
L
L1
0.36
0.46
0.42 REF
0.15 BSC
L2
TOP VIEW
NOM
θ
0º
8º
θ1
4º
10º
q1
A2 A
q
q1
b
L
L1
A1
SIDE VIEW
c
END VIEW
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-203.
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10
L2
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
PACKAGE DIMENSIONS
SOT−23, 5 Lead
CASE 527AH
ISSUE O
D
E1
SYMBOL
MIN
A
0.90
A1
0.00
A2
0.90
b
0.30
c
0.08
E
0.15
1.15
1.30
0.50
0.22
D
2.90 BSC
E
2.80 BSC
1.60 BSC
e
0.95 BSC
L
MAX
1.45
E1
e
PIN #1 IDENTIFICATION
NOM
0.45
0.30
L1
0.60 REF
L2
0.25 REF
0.60
θ
0°
4°
8°
θ1
5°
10°
15°
θ2
5°
10°
15°
TOP VIEW
θ1
A2
A
θ
b
θ2
L1
A1
SIDE VIEW
L2
L
c
END VIEW
Notes:
(1) All dimensions in millimeters. Angles in degrees.
(2) Complies with JEDEC standard MO-178.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC
reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any
particular purpose, nor does SCILLC 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. “Typical” parameters which may be provided in SCILLC 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. SCILLC
does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for
surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where
personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC 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,
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