TC54
Voltage Detector
Features:
General Description:
• ±2.0% Detection Thresholds
• Small Packages: 3-Pin SOT-23A, SOT-89, and
TO-92
• Low Current Drain: 1 µA, typical
• Wide Detection Range: 1.1V to 6.0V
• Wide Operating Voltage Range: 0.7V to 10V
The TC54 series are CMOS voltage detectors especially well-suited for battery-powered applications
because of their extremely low 1 µA operating current
and small surface-mount packaging. Each part is lasertrimmed to the desired threshold voltage, which can be
specified from 1.4V to 6.0V with a 2% tolerance.
The TC54 is available with either an open-drain or complementary output stage. During operation, the output
(VOUT) remains in the logic-high state as long as VIN is
greater than the specified threshold voltage (VDET –).
When VIN falls below VDET –, the output is driven to a
logic-low. VOUT remains low until VIN rises above
VDET – by an amount VHYST, when it resets to a logichigh state.
Applications:
•
•
•
•
•
Battery Voltage Monitoring
Microprocessor Reset
System Brown-Out Protection
Switching Circuit in Battery Backup
Level Discriminator
Package Types
Functional Block Diagram
TC54VC only
3-Pin SOT-89
3-Pin SOT-23A
VIN
VIN
3
VIN
TC54
VOUT
–
1
VOUT
+
TC54
2
3
VOUT VIN VSS
2
VSS
1
3-Pin TO-92
VREF
123
VSS
TC54VN has open-drain output.
TC54VC has complementary (push-pull) output.
VOUT VIN VSS
Note:
3-Pin SOT-23A is equivalent to the
EIAJ SC-59.
Device Features
Output
Device
Reset Delay
Std. Trip Points(1) (typical)
Type
State
TC54VN
Open-Drain
Active Low
No
1.4V, 2.1V, 2.7V, 2.9V
TC54VC
Push-Pull
Active Low
No
3.0V, 4.2V, 4.3V
Note 1:
Custom Trip Points available. Minimum order requirement. Information available upon request.
2001-2014 Microchip Technology Inc.
DS20001434K-page 1
TC54
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
Input Voltage ...................................................................+12V
Output Current ..............................................................50 mA
Output Voltage: CMOS................(VSS – 0.3V) to (VIN + 0.3V)
Open-Drain.....................(VSS – 0.3V) to 12V
Power Dissipation (TA 70°C):
3-Pin SOT-23A .......................................................240 mW
3-Pin SOT-89..........................................................500 mW
3-Pin TO-92 ............................................................300 mW
Operating Temperature Range........................-40°C to +85°C
Storage Temperature Range .........................-65°C to +150°C
† Notice: 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 above those indicated
in the operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, TA = +25°C.
Parameter
Symbol
Min.
Typ.
Max.
Units
Operating Voltage
VIN
0.7
—
10.0
V
0.7
—
6.0
V
(VDET –) 1.6V
(VDET –) < 1.6V
Quiescent Current
ISS
—
0.8
2.7
µA
VIN = 2.0V
—
0.9
3.0
VIN = 3.0V
—
1.0
3.2
VIN = 4.0V
Threshold Voltage
(Note 1)
Hysteresis Voltage
Output Current
Tempco of (VDET –)
Delay Time
Note 1:
2:
Test Conditions
—
1.1
3.6
1.37
1.4
1.43
2.06
2.1
2.14
TC54VX21
2.65
2.7
2.75
TC54VX27
2.84
2.9
2.96
TC54VX29
2.94
3.0
3.06
TC54VX30
4.12
4.2
4.28
TC54VX42
4.21
4.3
4.39
TC54VX43
N.M-2%
N.M
N.M+2%
28
70
112
42
105
168
VDET = 2.1V (typical)
54
135
216
VDET = 2.7V (typical)
58
145
232
VDET = 2.9V (typical)
60
150
240
VDET = 3.0V (typical)
84
210
336
VDET = 4.2V (typical)
86
215
344
VDET = 4.3V (typical)
Q-60%
Q
Q+60%
3.0
7.7
—
5.0
10.1
—
VOL = 0.5V, VIN = 3.0V
6.0
11.5
—
VOL = 0.5V, VIN = 4.0V
7.0
13.0
—
VOL = 0.5V, VIN = 5.0V
—
-10.0
-2.0
TC (VDET –)
—
±100
—
tDLY
—
—
0.2
VDET –
VHYST
IOUT
VIN = 5.0V
V
TC54VX14
TC54VXNM (Note 2)
mV
VDET = 1.4V (typical)
VDET = (20*Q)V (typical) (Note 2)
mA
VOL = 0.5V, VIN = 2.0V
TC54VC Only:
VOH = VIN – 2.1V, VIN = 8.0V
ppm/°C -40°C TA 85°C
ms
VDET – VOUT inversion
For other voltage options, please contact your regional Microchip sales office.
Represents all other custom Threshold Voltage options.
DS20001434K-page 2
2001-2014 Microchip Technology Inc.
TC54
TEMPERATURE SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, all limits are specified for: VDD =+1.8V to +5.5V, VSS = GND.
Parameters
Sym.
Min.
Typ.
Max.
Units
Operating Temperature Range
TA
-40
—
+85
°C
Storage Temperature Range
TA
-65
—
+150
°C
Thermal Resistance, 3L-SOT-23A
JA
—
308
—
°C/W
Thermal Resistance, 3L-SOT-89
JA
—
131.7
—
°C/W
Thermal Resistance, 3L-TO-92
JA
—
146
—
°C/W
Conditions
Temperature Ranges
Thermal Package Resistances
VDET –+VHYST
VDET
VDD
tDLY
OUTPUT
FIGURE 1-1:
VOH
Timing Diagram.
2001-2014 Microchip Technology Inc.
DS20001434K-page 3
TC54
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
TC54
Symbol
2.1
SOT-89
TO-92
1
1
1
VOUT
Digital Output
3
2
2
VIN
Analog Input
2
3
3
VSS
Ground Terminal
—
Tab
—
VIN
Analog Input
Digital Output (VOUT)
VOUT goes low when VIN drops below VDET – and
returns high when VIN rises above VDET – + VHYST.
(See Figure 3-1).
2.2
Description
SOT-23A
2.3
Ground Terminal (VSS)
VSS provides the negative reference for the analog
input voltage. Typically, the circuit ground is used.
Analog Input (VIN)
VIN can be used for power supply monitoring or a
voltage level that requires monitoring.
DS20001434K-page 4
2001-2014 Microchip Technology Inc.
TC54
3.0
DETAILED DESCRIPTION
In normal steady-state operation when VIN > VDET –,
the output will be at a logic-high (see Figure 3-1). In the
case of the TC54VN, this is an open-drain condition. If
the input falls below VDET –, the output will pull down
(Logic 0) to VSS. Generally, VOUT can pull down to
within 0.5V of VSS at rated output current and input
voltage.
(See
Section 1.0
“Electrical
Characteristics”).
VIN
The output (VOUT) will stay valid until the input voltage
falls below the minimum operating voltage (VINMIN) of
0.7V. Below this minimum operating voltage, the output
is undefined. During power-up (or anytime VIN has
fallen below VINMIN), VOUT will remain undefined until
VIN rises above VINMIN. When this occurs, the output
will become valid. VOUT will be in its Active-low state,
while VINMIN < VIN < VDET+ (therefore, VDET + = VDET –
+ VHYST). If the input rises above VDET+, the output will
assume its Inactive state (high for TC54VC, open-drain
for TC54VN).
VDET +
VHYST
Release Voltage
or Reset Voltage
Detect Voltage VDET –
Minimum Operating
Voltage
Ground Level
VOUT
Output Voltage
Ground Level
FIGURE 3-1:
Timing Diagram.
2001-2014 Microchip Technology Inc.
DS20001434K-page 5
TC54
4.0
APPLICATIONS INFORMATION
4.1
Modifying the Trip Point, VDET –
Although the TC54 has a pre-programmed VDET –, it is
sometimes necessary to make adjustments during
prototyping. This can be accomplished by connecting
an external resistor divider to a TC54, which has a
VDET – lower than that of VSOURCE (Figure 4-1).
To maintain detector accuracy, the bleeder current
through the divider should be significantly higher than
the 1 µA operating current required by the TC54. A reasonable value for this bleeder current is 100 µA (100
times the 1 µA required by the TC54). For example, if
VDET – = 2V and the desired trip point is 2.5V, the value
of R1 + R2 is 25 k (2.5V/100 µA). The value of
R1 + R2 can be rounded to the nearest standard value
and plugged into the equation of Figure 4-1 to calculate
values for R1 and R2. 1% tolerance resistors are
recommended.
4.2
Other Applications
Low operating power and small physical size make the
TC54 series ideal for many voltage detector applications, such as those shown in Figures 4-2, 4-3 and 4-4.
Figure 4-2 shows a low-voltage gate drive protection
circuit that prevents the overheating of the logic-level
MOSFET due to insufficient gate voltage. When the
input signal is below the threshold of the TC54VN, its
output grounds the gate of the MOSFET. Figure 4-3
and Figure 4-4 show the TC54 in conventional voltage
monitoring applications.
4.3V
270
VCC
VIN
RL
VOUT
TC54VX
VSOURCE
MTP3055EL
VSS
R2
VIN
R1
TC54
VOUT
VSS
FIGURE 4-2:
Protection.
MOSFET Low Drive
+
VIN
–
TC54VX
V SOURCE
VOUT
R
1
-------------------- = V
DET R +R
1
2
BATLOW
VSS
Where:
VSOURCE = Voltage to be monitored
VDET – = Threshold Voltage setting of TC54
Note:
FIGURE 4-3:
Battery Voltage Monitor.
In this example, VSOURCE must be
greater than (VDET –)
VIN
FIGURE 4-1:
Modify Trip-point of the
TC54 using External Resistor Divider.
+
Pwr.
Sply.
TC54VX
VOUT
Power Good
–
VSS
FIGURE 4-4:
DS20001434K-page 6
Power Good Monitor.
2001-2014 Microchip Technology Inc.
TC54
5.0
PACKAGING INFORMATION
5.1
Package Marking Information
3-Lead SOT-23A
Example
C302
2NN
3-Lead SOT-89
Example
XXXYYWW
@NNN
3-Lead TO-92
Example
XXXXXX
XXXXXX
XXXXXX
YWWNNN
Legend: XX...X
Y
YY
WW
NNN
e3
*
Note:
E3
31
54VN
3002
1256
Customer-specific information
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC® designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator ( e3 )
can be found on the outer packaging for this package.
In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
2001-2014 Microchip Technology Inc.
DS20001434K-page 7
TC54
3-Pin SOT-23A
3-Pin TO-92
3-Pin SOT-89
2
4
1 2 3 4
1
2
3
4
1
5 6 7 8
3
1 , 2 and 3
1
represents output configuration (CMOS or Nch)
and first integer of voltage
Ex: CMOS 3.x =
2
)
3
4
D
Symbol
Output
Voltage
B
CMOS
1.
C
CMOS
2.
D
CMOS
3.
E
CMOS
4.
F
CMOS
5.
H
CMOS
I
CMOS
= 54X (fixed)
represents output configuration (CMOS or N-Ch)
Ex: CMOS 3.x = C
Symbol
5
Output
C
CMOS
N
N-Channel
represents first integer of detect voltage
Symbol
Voltage
6.
2
2.
7.
3
3.
4
4.
5
5.
6
6.
Symbol
Output
Voltage
L
N-Channel
1.
M
N-Channel
2.
N
N-Channel
3.
P
N-Channel
4.
R
N-Channel
5.
S
N-Channel
6.
T
N-Channel
7.
6
represents first decimal of detect voltage
Symbol
Voltage
Symbol
Voltage
0
.0
5
.5
1
.1
6
.6
2
.2
7
.7
represents first decimal of output voltage (0-9)
3
.3
8
.8
Ex: CMOS 3.x =
4
.4
9
.9
D 4
Symbol
Voltage
Symbol
Voltage
0
.0
6
.6
1
.1
7
.7
2
.2
8
.8
3
.3
9
.9
4
.4
5
.5
and
4
represent assembly lot code
DS20001434K-page 8
7
8
represents the output delay time
Symbol
Delay Time
0
No Delay
represents the device accuracy
Symbol
Accuracy
1
±1.0% (custom)
2
±2.0% (standard)
2001-2014 Microchip Technology Inc.
TC54
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DS20001434K-page 9
TC54
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
DS20001434K-page 10
2001-2014 Microchip Technology Inc.
TC54
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DS20001434K-page 11
TC54
3-Lead Plastic Small Outline Transistor (MB) - [SOT-89]
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DS20001434K-page 12
2001-2014 Microchip Technology Inc.
TC54
3-Lead Plastic Small Outline Transistor (MB) - [SOT-89]
Note:
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
X1
X2 (2x)
Y1
Y3
Y4
Y2
Y
X (3x)
C
SILK SCREEN
RECOMMENDED LAND PATTERN
Units
Dimension Limits
C
X
X1
X2
Y
Y1
Y2
Y3
Y4
MIN
MILLIMETERS
NOM
1.50 (BSC)
0.900
1.733
0.416
1.300
4.600
1.475
0.950
1.125
MAX
Notes:
1. Dimensioning and tolerancing per ASME Y14.5M
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
Microchip Technology Drawing No. C04-2029B
2001-2014 Microchip Technology Inc.
DS20001434K-page 13
TC54
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DS20001434K-page 14
2001-2014 Microchip Technology Inc.
TC54
APPENDIX A:
REVISION HISTORY
Revision K (July 2014)
The following is the list of modifications:
1.
Updated the “DC Characteristics” table.
Revision J (June 2011)
The following is the list of modifications:
1.
2.
3.
Updated
temperature
values
in
the
“Temperature Specifications” table.
Corrected equation in Figure 4-1.
Added new examples layout in Section 5.1,
Package Marking Information.
Revision H (December 2007)
The following is the list of modifications:
1.
2.
3.
4.
5.
6.
7.
8.
Updated Features section.
Removed 5-Pin SOT-23 related information.
Updated Output Current (IOUT) Electrical
Specification.
Removed 7.7V (typical) Voltage Trip Point
Option. Max Trip Point Voltage is now 6.0V.
Updated Pin Function Table.
Updated Packaging Specification Information.
Added Revision History section.
Updated Product Identification System page.
Revision G (August 2004)
Undocumented changes.
Revision F (July 2004)
Undocumented changes.
Revision E (April 2003)
Undocumented changes.
Revision D (October 2002)
Undocumented changes.
Revision C (July 2002)
Undocumented changes.
Revision B (May 2002)
Undocumented changes.
Revision A (March 2001)
Original Release of this Document.
2001-2014 Microchip Technology Inc.
DS20001434K-page 15
TC54
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO.
Device
X
XX
X
X
X
XX
XX
Output Detected Extra Tolerance Temp. Pkg Taping
Config. Voltage Feature
Direction
Code
Device:
TC54V:
Output
Configuration:
N
C
= N-Channel Open-Drain
= CMOS Output
Detected Voltage:
14
21
27
29
30
42
43
=
=
=
=
=
=
=
Extra Feature Code:
0
= Fixed
Tolerance:
2
= 2%
Temperature:
E
= -40°C to +85°C
Package:
CB = Plastic Small Outline Transistor, SOT-23A, 3-lead
MB = Plastic Small Outline Transistor, SOT-89, 3-lead
ZB = Plastic Transistor Outline, TO-92, 3-lead
Taping Direction:
713 = Standard Taping
DS20001434K-page 16
Examples:
a)
TC54VC1402ECB713:
b)
TC54VC1402EMB713:
c)
TC54VC1402EZB:
d)
TC54VC2102ECB713:
e)
TC54VC2102EMB713:
f)
TC54VC2102EZB:
g)
TC54VC2702ECB713:
h)
TC54VC3002ECB713:
i)
TC54VN4202ECB713:
Voltage Detector
1.4V
2.1V
2.7V
2.9V
3.0V
4.2V
4.3V
Tape and Reel,
1.4V Voltage
Detector, 2% Tol.,
SOT-23A-3
Tape and Reel,
1.4V Voltage
Detector, 2% Tol.,
SOT-89-3
1.4V Voltage
Detector, 2% Tol.,
TO-92
Tape and Reel,
2.1V Voltage
Detector, 2% Tol.,
SOT-23A-3
Tape and Reel,
2.1V Voltage
Detector, 2% Tol.,
SOT-89-3
2.1V Voltage
Detector,
2% Tol., TO-92
Tape and Reel,
2.7V Voltage
Detector, 2% Tol.,
SOT-23A-3
Tape and Reel,
3.0V Voltage
Detector, 2% Tol.,
SOT-23A-3
Tape and Reel,
4.2V Voltage
Detector, 2% Tol.,
SOT-23A-3
2001-2014 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer,
LANCheck, MediaLB, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, PICSTART, PIC32 logo, RightTouch, SpyNIC,
SST, SST Logo, SuperFlash and UNI/O are registered
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
The Embedded Control Solutions Company and mTouch are
registered trademarks of Microchip Technology Incorporated
in the U.S.A.
Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo,
CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit
Serial Programming, ICSP, Inter-Chip Connectivity, KleerNet,
KleerNet logo, MiWi, MPASM, MPF, MPLAB Certified logo,
MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code
Generation, PICDEM, PICDEM.net, PICkit, PICtail,
RightTouch logo, REAL ICE, SQI, Serial Quad I/O, Total
Endurance, TSHARC, USBCheck, VariSense, ViewSpan,
WiperLock, Wireless DNA, and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
GestIC is a registered trademarks of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip
Technology Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2001-2014, Microchip Technology Incorporated, Printed in
the U.S.A., All Rights Reserved.
ISBN: 978-1-63276-422-5
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
2001-2014 Microchip Technology Inc.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS20001434K-page 17
Worldwide Sales and Service
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
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Tel: 480-792-7200
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Technical Support:
http://www.microchip.com/
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Web Address:
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Tel: 45-4450-2828
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Tel: 216-447-0464
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Tel: 631-435-6000
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Tel: 408-735-9110
Canada - Toronto
Tel: 905-673-0699
Fax: 905-673-6509
DS20001434K-page 18
China - Chongqing
Tel: 86-23-8980-9588
Fax: 86-23-8980-9500
China - Hangzhou
Tel: 86-571-8792-8115
Fax: 86-571-8792-8116
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Tel: 852-2943-5100
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Germany - Dusseldorf
Tel: 49-2129-3766400
Germany - Munich
Tel: 49-89-627-144-0
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Japan - Tokyo
Tel: 81-3-6880- 3770
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Germany - Pforzheim
Tel: 49-7231-424750
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
Italy - Venice
Tel: 39-049-7625286
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
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Netherlands - Drunen
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Malaysia - Penang
Tel: 60-4-227-8870
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Poland - Warsaw
Tel: 48-22-3325737
Philippines - Manila
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Sweden - Stockholm
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Taiwan - Kaohsiung
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Tel: 86-756-3210040
Fax: 86-756-3210049
03/25/14
2001-2014 Microchip Technology Inc.