CAT5110, CAT5118, CAT5119
CAT5123, CAT5124, CAT5125
© 2008 SCILLC. All rights reserved. 1 Doc. No. MD-2120 Rev. K
Characteristics subject to change without notice
32-Tap MiniPot™ Digitally Programmable
Potentiometers with 2-Wire Interface
FEATURES
0.3µA Ultra-low standby current
Single-supply operation: 2.7V to 5.5V
Glitchless switching between resistor taps
Power-on reset to midscale
2-wire up/down serial interface
Resistance values: 10kΩ, 50kΩ and 100kΩ
Low wiper resistance: 80Ω for
CAT5123, CAT5124, CAT5125
CAT5110, CAT5118, CAT5119 available in SC-70
APPLICATIONS
LCD screen adjustment
Volume control
Mechanical potentiometer replacement
Gain adjustment
Line impedance matching
For Ordering Information details, see page 11.
PIN CONFIGURATION
DESCRIPTION
CAT5110/18/19/23/24/25 linear-taper digitally programmable
potentiometers 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: 10k, 50k and
100k. 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.
FUNCTIONAL DIAGRAM
32-POSITION
DECODER
UP-DOWN
COUNTER
U/D
V
DD
GND
H
L
W
CS
V
DD
GND
CSU/D
H
L5
34
GND
CSU/D
H
2
CAT5118
CAT5123
GND
CSU/D
1615
34
HV
DD
V
DD
V
DD
V
DD
2
34
W5
CAT5110
CAT5125
SOT-23 SOT-23
SOT-23
GND
CSU/D
16H
2L5
CAT5119
CAT5124
34
GND
CSU/D
H
2
CAT5118
GND
CSU/D
1615HV
DD
2
34
W5
CAT5110
SC-70 SC-70SC-70
2
CAT5119
34
16
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Doc. No. MD-2120 Rev. K 2 © 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice
PIN DESCRIPTIONS
Pin Number
CAT5110/
CAT5125
CAT5118/
CAT5123
CAT5119/
CAT5124
Pin
Name Description
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
ABSOLUTE MAXIMUM RATINGS(1)
Parameters Ratings Units
VDD to GND -0.3 to +6 V
All Other Pins to GND -0.3 to (VDD + 0.3) V
Input and Output Latch-Up Immunity ±200 mA
Maximum Continuous Current into H, L and W
100k
50k
10k
±0.6
±1.3
±1.3
mA
Continuous Power Dissipation (TA = +70ºC)
5-pin SC-70(2)
6-pin SC-70(2)
247
245
mW
Operating Temperature Range -40 to +85 ºC
Junction Temperature +150 ºC
Storage Temperature Range -65 to +150 ºC
Soldering Temperature (soldering, 10sec) +300 ºC
Notes:
(1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this
specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
(2) Derate 3.1mW/ºC above TA = +70ºC
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
© 2008 SCILLC. All rights reserved. 3 Doc. No. MD-2120 Rev. K
Characteristics subject to change without notice
ELECTRICAL CHARACTERISTICS
VDD = 2.7V to 5.5V, VH = VDD, VL = 0, TA = -40ºC to +85ºC. Typical values are at VDD = 2.7V, TA = 25ºC, unless
otherwise noted.
Parameter Symbol Conditions Min Typ Max Units
DC Performance
Resolution 32 Taps
End-to-End Resistance (-00) 80 100 120
End-to-End Resistance (-50) 40 50 60
End-to-End Resistance (-10) 8 10 12
k
CAT5110/18/19 200
End-to-End Resistance Tempco TCR CAT5123/24/25 30 300
ppm/ºC
Ratiometric Resistance Tempco 5 ppm/ºC
Integral Nonlinearity INL ±0.5 ±1 LSB
Differential Nonlinearity DNL ±1 LSB
Full-Scale Error ±0.1 LSB
Zero-Scale Error 1 LSB
CAT5110/18/19 200 600
Wiper Resistance RW CAT5123/24/25 80 200
Digital Inputs
Input High Voltage VIH 0.7 x VDD V
Input Low Voltage VIL 0.3 x VDD V
Timing Characteristics (Figures 1, 2)
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(1) fTOGGLE 1 MHz
100k variable resistor
configuration, CL = 10pF 1
Output Settling Time (2) t
SETTLE 100k potentiometer
configuration, CL = 10pF 0.25
s
Power Supply
Supply Voltage VDD 2.7 5.5 V
Active Supply Current (3) I
DD 25 µA
Standby Supply Current (4) I
SB V
DD = +5V 0.3 1 µA
Notes:
(1) Up/Down Toggle Rate:
SETTLE
TOGGLE t
1
=f
(2) Typical settling times are dependent on end-to-end resistance.
(3) Supply current measured while changing wiper tap, fTOGGLE = 1MHz.
(4) Supply current measured while wiper position is fixed.
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Doc. No. MD-2120 Rev. K 4 © 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice
TYPICAL OPERATING CHARACTERISTICS
TA = 25ºC, unless otherwise noted.
0
0 5 10 15 20 25
WI PER POSTION TEM PERATU R E ( ºC)
TEMPERATURE (ºC) 200ns/div
TAP POSIT ION
30 -50 0 50 100
-50
1 3 5 7 9 1113151719212325272931
50 150100
0-1.5
0.45
0.40
0.35
0.30
0.25
0.20
2V/div
WIPER
OUTPUT
100mv/div
U/D
0.15
0.10
0.05
0.00
1.5
-0.5
-1.0
1.0
0.5
0.0
20
40
60
80
R
W
(
)
RESISTANC E ( k)
END-TO -END RESISTANCE % CHANGE
CURRENT (µA)
100
120
0
20
40
60
80
100
120
140
160
CAT5123/5124/5125
V
DD
= 5.5V
100k
50k
10k
V
DD
= 2.7V
CAT5123/5124/5125
V
DD
= 2.7V
CAT5110/5118/5119
CAT5110/5118/5119
WIPER RESISTANCE vs.
WIPER POSITION
CHANGE IN END-TO-END RESIST
A
NCE
vs. TEMPERATURE
SUPPLY CURRENT vs.
TEMPERATURE
TAP-TO-TAP
SWITCHING TRANSIENT
W-TO-L RESIST
A
NCE vs.
TAP POSITION
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
© 2008 SCILLC. All rights reserved. 5 Doc. No. MD-2120 Rev. K
Characteristics subject to change without notice
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: 10k, 50k and 100k.
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.
Digital Interface Operation
The MiniPots 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.
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 1 and 2).
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.
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.
Figure 1. Serial Interface Timing Diagram, Increment Mode
Figure 2. Serial Interface Timing Diagram, Decrement Mode
CS
U/D
W
t
CU
t
IL
t
IH
t
SETTLE
t
IC
t
CI
t
SETTLE
Note: "W" is not a digital signal. It represents wiper transitions.
CS
U/D
W
t
CU
t
IL
t
IH
t
IC
t
SETTLE
t
CI
t
SETTLE
Note: "W" is not a digital signal. It represents wiper transitions.
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Doc. No. MD-2120 Rev. K 6 © 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice
30V
W
L
H
+5V
VOUT
CAT5110/CAT5125
30V
L
H
+5V
VOUT
CAT5119/CAT5124
VCC
L
H
VIN
VOUT
VCC
LH
W
VIN
VOUT
CAT5110/CAT5125
CAT5118/CAT5123
APPLICATIONS INFORMATION
The MiniPots are intended for circuits requiring
digitally controlled adjustable resistance, such as LCD
contrast control, where voltage biasing adjusts the
display contrast.
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 3.
Figure 4 shows a similar circuit for the CAT5119/
CAT5124.
Adjustable Gain
Figure 5 shows how to use either a variable resistor or
a potentiometer to digitally adjust the gain of a
noninverting op amp configuration, by connecting the
Minipot in series with a resistor to ground. The
MiniPots have a low 5ppm/ºC ratiometric tempco that
allows for a very stable adjustable gain configuration
over temperature.
Figure 3. Positive LCD Bias Control
Figure 5a. Adjustable Gain Circuit Figure 5b. Adjustable Gain Circuit
Figure 4. Positive LCD Bias Control
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
© 2008 SCILLC. All rights reserved. 7 Doc. No. MD-2120 Rev. K
Characteristics subject to change without notice
PACKAGE OUTLINE DRAWINGS
SC-70 6-Lead (SD) (1)(2)
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC standard MS-203.
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
E1 E
D
A
L
L1 L2
ee
bA1
A2
c
TOP VIEW
SIDE VIEW END VIEW
1
1
SYMBOL MIN NOM MAX
A 0.80 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
e 0.65 BSC
L 0.26 0.36 0.46
L1 0.42 REF
L2 0.15 BSC
0° 8°
1 4° 10°
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Doc. No. MD-2120 Rev. K 8 © 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice
SOT-23 6-Lead (TB) (1)(2)
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC standard MO-178.
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
TOP VIEW
SIDE VIEW END VIEW
E1 E
PIN #1 IDENTIFICATION
A2
A1
e
b
D
c
A
L1 L
L2
SYMBOL MIN NOM MAX
A 0.90 1.45
A1 0.00 0.15
A2 0.90 1.15 1.30
b 0.30 0.50
c 0.08 0.22
D2.90 BSC
E2.80 BSC
E1 1.60 BSC
e0.95 BSC
L 0.30 0.45 0.60
L1 0.60 REF
L2 0.25 REF
0º 4º 8º
1 5º 10º 15º
2 5º 10º 15º
2
1
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
© 2008 SCILLC. All rights reserved. 9 Doc. No. MD-2120 Rev. K
Characteristics subject to change without notice
SC-70 5-Lead (SD) (1)(2)
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC standard MS-203.
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
E1 E
D
A
L
L1 L2
ee
bA1
A2
c
TOP VIEW
SIDE VIEW END VIEW
1
1
SYMBOL MIN NOM MAX
A 0.80 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
e 0.65 BSC
L 0.26 0.36 0.46
L1 0.42 REF
L2 0.15 BSC
0° 8°
14° 10°
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Doc. No. MD-2120 Rev. K 10 © 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice
SOT-23 5-Lead (TB) (1)(2)
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC standard MO-178.
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
TOP VIEW
SIDE VIEW END VIEW
E1 E
PIN #1 IDENTIFICATION
A2
A1
e
b
D
c
A
L1 L
L2
2
1
SYMBOL MIN NOM MAX
A 0.90 1.45
A1 0.00 0.15
A2 0.90 1.15 1.30
b 0.30 0.50
c 0.08 0.22
D 2.90 BSC
E 2.80 BSC
E1 1.60 BSC
e 0.95 BSC
L 0.30 0.45 0.60
L1 0.60 REF
L2 0.25 REF
0º 4º 8º
15º10º15º
25º10º15º
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
© 2008 SCILLC. All rights reserved. 11 Doc. No. MD-2120 Rev. K
Characteristics subject to change without notice
EXAMPLE OF ORDERING INFORMATION (1)
Notes:
(1) All packages are RoHS-compliant (Lead-free, Halogen-free).
(2) The standard finish is NiPdAu.
(3) The device used in the example above is a CAT5110SDI-10 -GT3 (SC-70, Industrial Temperature, 10k, NiPdAu, Tape & Reel, 3,000/Reel).
(4) For additional package and temperature options, please contact your nearest ON Semiconductor Sales office.
Prefix Device # Suffix
CAT 5110 SD I -10 – G T3
Optional
Company ID
Temperature Range
I = Industrial (-40ºC to 85ºC)
Resistance
-10: 10k
-50: 50k
-00: 100k
Lead Finish
Blank: Matte-Tin
G: NiPdAu
Tape & Reel
T: Tape & Reel
3: 3
,
000/Reel
Product Number
5110
5118
5119
5123
5124
5125
Package
SD: SC-70
TB: SOT-23
For Product Top Mark Codes, click here:
http://www.catsemi.com/techsupport/producttopmark.asp
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Doc. No. MD-2120 Rev. K 12 © 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice
ORDERING INFORMATION
Device Ordering Part Number Resistor [kΩ] Pin Package Parts Per Reel
CAT5110 CAT5110SDI-10-GT3 10 SC70-6 3,000
CAT5110TBI-10-T3 10 SOT23-6 3,000
CAT5110TBI-10-GT3 10 SOT23-6 3,000
CAT5110SDI-50-GT3 50 SC70-6 3,000
CAT5110TBI-50-T3 50 SOT23-6 3,000
CAT5110TBI-50-GT3 50 SOT23-6 3,000
CAT5110SDI-00-GT3 100 SC70-6 3,000
CAT5110TBI-00-T3 100 SOT23-6 3,000
CAT5110TBI-00-GT3 100 SOT23-6 3,000
CAT5118 CAT5118SDI-10-GT3 10 SC70-5 3,000
CAT5118TBI-10-T3 10 SOT23-5 3,000
CAT5118TBI-10-GT3 10 SOT23-5 3,000
CAT5118SDI-50-GT3 50 SC70-5 3,000
CAT5118TBI-50-T3 50 SOT23-5 3,000
CAT5118TBI-50-GT3 50 SOT23-5 3,000
CAT5118SDI-00-GT3 100 SC70-5 3,000
CAT5118TBI-00-T3 100 SOT23-5 3,000
CAT5118TBI-00-GT3 100 SOT23-5 3,000
CAT5119 CAT5119SDI-10-GT3 10 SC70-6 3,000
CAT5119TBI-10-T3 10 SOT23-6 3,000
CAT5119TBI-10-GT3 10 SOT23-6 3,000
CAT5119SDI-50-GT3 50 SC70-6 3,000
CAT5119TBI-50-T3 50 SOT23-6 3,000
CAT5119TBI-50-GT3 50 SOT23-6 3,000
CAT5119SDI-00-GT3 100 SC70-6 3,000
CAT5119TBI-00-T3 100 SOT23-6 3,000
CAT5119TBI-00-GT3 100 SOT23-6 3,000
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
© 2008 SCILLC. All rights reserved. 13 Doc. No. MD-2120 Rev. K
Characteristics subject to change without notice
Device Ordering Part number Resistor [kΩ] Pin Package Parts Per Reel
CAT5123 CAT5123TBI-10-T3 10 SOT23-5 3,000
CAT5123TBI-10-GT3 10 SOT23-5 3,000
CAT5123TBI-50-T3
(1)
50 SOT23-5 3,000
CAT5123TBI-50-GT3
(1)
50 SOT23-5 3,000
CAT5123TBI-00-T3
(1)
100 SOT23-5 3,000
CAT5123TBI-00-GT3
(1)
100 SOT23-5 3,000
CAT5124 CAT5124TBI-10-T3
(1)
10 SOT23-6 3,000
CAT5124TBI-10-GT3
(1)
10 SOT23-6 3,000
CAT5124TBI-50-T3 50 SOT23-6 3,000
CAT5124TBI-50-GT3 50 SOT23-6 3,000
CAT5124TBI-00-T3
(1)
100 SOT23-6 3,000
CAT5124TBI-00-GT3
(1)
100 SOT23-6 3,000
CAT5125 CAT5125TBI-10-T3 10 SOT23-6 3,000
CAT5125TBI-10-GT3 10 SOT23-6 3,000
CAT5125TBI-50-T3
(1)
50 SOT23-6 3,000
CAT5125TBI-50-GT3
(1)
50 SOT23-6 3,000
CAT5125TBI-00-T3
(1)
100 SOT23-6 3,000
CAT5125TBI-00-GT3
(1)
100 SOT23-6 3,000
Notes:
(1) Contact factory for availability.
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
Doc. No. MD-2120 Rev. K 14 © 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice
REVISION HISTORY
Date Rev. Description
10-Mar-04 A Initial Issue
18-Mar-04 B Update Typical Operating Characteristics
U
p
date SC70
p
acka
g
e outline
19-Jul-04 C Added SOT-23 package in all areas
Update Description
Update Electrical Characteristics
Update Typical Operating Characteristics
Update Functional Description
15-Dec-06 D Added CAT5123, CAT5124, CAT5125
Update Features
Update Description
Update Pin Configuration
Update Pin Description
Update Electrical Characteristics
Update Typical Operating Characteristics
Update Functional Description
Update Figures 3, 4, 5 and 6
Update Package Information
Update Example of Ordering Information
Update Ordering information
29-Jan-07 E Update Electrical Characteristics
03-Aug-07 F Update Package Outline Drawings
Update Example of Ordering Information
Update Ordering Information “Top Marking“
02-Nov-07 G Update Electrical Characteristics
Update Package Outline Drawings
29-Jan-08 H Update Ordering Information
12-Mar-08 I Add Top Mark Code link
29-May-08 J
Delete 10,000 per reel option
U
p
date Document La
y
out
20-Nov-08 K
Change logo and fine print to ON Semiconductor
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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, any claim of personal injury or death associated
with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC 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
P.O. Box 5163, Denver, Colorado 80217 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
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Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
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Phone: 81-3-5773-3850
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125
