Texas Instruments ISO154xEVM User manual

User’s Guide
ISO154xEVM Low-Power Bidirectional I2C Isolators
Evaluation Module
Mahit Warhadpande Industrial Interface
Table of Contents
1 Introduction.............................................................................................................................................................................2
1.1 Overview............................................................................................................................................................................ 2
1.2 ISO154xEVM Kit Contents.................................................................................................................................................2
1.3 Functional Configuration.................................................................................................................................................... 2
1.4 EVM Schematic..................................................................................................................................................................3
2 EVM Setup and Operation......................................................................................................................................................6
2.1 Overview............................................................................................................................................................................ 6
2.2 Input/Output Signal Characteristics....................................................................................................................................6
3 Bill of Materials....................................................................................................................................................................... 9
4 ISO154xEVM Layout............................................................................................................................................................. 10
5 Revision History....................................................................................................................................................................11
List of Figures
Figure 1-1. ISO1540 and ISO1541 Pinout...................................................................................................................................3
Figure 1-2. ISO154xEVM Top Photograph.................................................................................................................................. 3
Figure 1-3. ISO154xEVM Schematic...........................................................................................................................................4
Figure 2-1. Basic EVM Operation................................................................................................................................................ 6
Figure 2-2. Typical Waveforms, Inputs on Side 1........................................................................................................................ 7
Figure 2-3. Typical Waveforms, Inputs on Side 2........................................................................................................................ 8
Figure 4-1. ISO154xEVM Top-layer Routing............................................................................................................................. 10
Figure 4-2. ISO154xEVM Bottom-layer Ground Planes.............................................................................................................11
List of Tables
Table 1-1. ISO154xEVM Description........................................................................................................................................... 4
Table 3-1. ISO154x EVM Bill of Materials....................................................................................................................................9
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1 Introduction
This User’s Guide details the ISO154x Evaluation Module (EVM) operation of the factory-installed ISO1540 and
ISO1541 I2C-compatible bidirectional isolators. The EVM may be reconfigured for use with two ISO1540 or two
ISO1541 instead of one of each.
This Guide presents a typical laboratory setup used with this EVM.
CAUTION
This Evaluation Module (EVM) is made available for isolator parameter performance evaluation
only and is not intended for isolation voltage testing. To prevent damage to the EVM, any voltage
applied as a supply or digital input/output must be maintained within the 0 V to 5.5 V recommended
operating range.
Exceeding the specified input voltage range may cause unexpected operation and irreversible damage to
the EVM. If there are questions concerning the input voltage range, contact a TI field representative prior to
connecting power.
Applying loads outside the specified output range may result in unintended operation and possible permanent
damage to the EVM. If there is uncertainty as to the load specification, contact a TI field representative.
1.1 Overview
The ISO154x devices are low-power, bidirectional isolators that are compatible with I2C interfaces. The logic
input and output buffers on these devices are separated by TI’s Isolation technology utilizing a silicon dioxide
(SiO2) barrier. When used in conjunction with isolated power supplies, these devices block high voltages, isolate
grounds and prevent noise currents from entering the local ground and interfering with or damaging sensitive
circuitry.
The ISO1540 has two isolated bidirectional channels for clock and data lines and is fit for multi-master
applications. The ISO1541 has a bidirectional data and a unidirectional clock channel and is useful in
applications that have a single master.
These devices achieve isolated bidirectional communication by introducing an offset, making the side 1 low-level
output greater than the side 1 low-level input and thus preventing an internal logic latch that otherwise would
occur with standard digital isolators.
1.2 ISO154xEVM Kit Contents
1. ISO154xEVM Circuit Board (PWB P/N 6547206)
2. ISO154xEVM User’s Guide (SLLU166 - this document)
3. ISO154x Datasheet (SLLSEB6)
1.3 Functional Configuration
The pinouts of ISO1540 and ISO1541 are displayed in Figure 1-1. These devices have an input noise-filter that
prevents transient pulses of up to 5 ns from being passed to the output of the device.
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ISO1540
1
2
3
45
6
7
8
GND2
SCL1
VCC2
VCC1
SCL2
Side 1
SDA1 SDA2
Isolation
ISO1541
1
2
3
45
6
7
8
GND2
SCL1
VCC2
VCC1
SCL2
GND1
SDA1 SDA2
Isolation
Side 2 Side 1 Side 2
GND1
Figure 1-1. ISO1540 and ISO1541 Pinout
The EVM is shown in Figure 1-2, it comes with an ISO1540 and an ISO1541 installed in place of U1 and U2
respectively. However, this EVM can be configured for use with two ISO1540s or two ISO1541s.
Figure 1-2. ISO154xEVM Top Photograph
An input or output pin can be tied either to supply voltage (VCCx) or Ground (GNDx) using the 4-pin jumpers on
the EVM (J3A to J10A on side 1 and J3B to J10B on side 2). These jumpers also provide scope-probe access to
each pin.
Each signal line (SDAx, SCLx) is configured with a 1-kΩ pull-up resistor (R1 to R8) to the corresponding power
supply (VCCx). Reconfigure the value of this pull-up resistor as per the application requirement.
1.4 EVM Schematic
A schematic diagram for this EVM is presented in Figure 1-3.
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Figure 1-3. ISO154xEVM Schematic
Table 1-1. ISO154xEVM Description
Label Description
U1 ISO154x, by default populated as ISO1540
U2 ISO154x, by default populated as ISO1541
J1 Side 1 power supply terminal block (VCC1)
J2 Side 2 power supply terminal block (VCC2)
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Table 1-1. ISO154xEVM Description (continued)
Label Description
TP15, TP47 Side 1 GND test point (GND1)
TP18, TP34 Side 2 GND test point (GND2)
TP13 VCC1 test point
TP16 VCC2 test point
J3A, J4A 4-pin jumper to VCC1, SDA1, GND1 for U1
J5A, J6A 4-pin jumper to VCC1, SCL1, GND1 for U1
J3B, J4B 4-pin jumper to VCC2, SDA2, GND2 for U1
J5B, J6B 4-pin jumper to VCC2, SCL2, GND2 for U1
J7A, J8A 4-pin jumper to VCC1, SDA1, GND1 for U2
J9A, J10A 4-pin jumper to VCC1, SCL1, GND1 for U2
J7B, J8B 4-pin jumper to VCC2, SDA2, GND2 for U2
J9B, J10B 4-pin jumper to VCC2, SCL2, GND2 for U2
C1, C2, C3, C4 1.0 µF filter capacitor
C5, C6, C7, C8 0.1 µF filter capacitor
R1, R2, R5, R6 1-kΩ 0603 footprint pull-up resistor to VCC1
R3, R4, R7, R8 1-kΩ 0603 footprint pull-up resistor to VCC2
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2 EVM Setup and Operation
This section includes the setup and operation of the EVM for parameter performance evaluation. Typical input
and output waveforms are included.
2.1 Overview
The basic setup in Figure 2-1 has the two power supplies required to evaluate isolator performance with any
combination of 3.3 V or 5 V on either side. If both sides are evaluated at the same supply voltage, only one
power supply is required and can be used to power both sides of the EVM.
CAUTION
Note that this EVM is for operating parameter performance evaluation only and not designed for
isolation voltage testing. Any voltage applied above the 5.5-V maximum recommended operating
voltage of the isolators may damage the EVM.
Please note that if the ISO1541 is used, providing an input signal on the SCL2 pin does not yield any output on
SCL1, SCL1 remains pulled up to VCC1.
J1 J2
U2
J3A/J4A
J5A/J6A
J3B/J4B
J5B/J6B
J7A/J8A
J9A/J10A
J7B/J8B
J9B/J10B
Power Supply
VCC1
Power Supply
VCC2
I C Transmitter
2
or
Oscilloscope I C Transmitter
2
U1
Oscilloscope
or
Figure 2-1. Basic EVM Operation
2.2 Input/Output Signal Characteristics
Figure 2-2 illustrates SDA1 and SCL1 of U1 being treated as inputs and driven by an I2C transmitter connected
to J3A/J4A (for SDA1) and J5A/J6A (for SCL1). The output waveforms at SDA2 and SCL2 are captured on the
oscilloscope at J3B/J4B and J5B/J6B respectively. Note the step in the rising edge of the input waveforms at
SDA1 and SCL1 indicative of the tLOOP parameter of the device and demonstrating the effect of the difference
in the low levels for the side 1 output and input enabling the device to avoid a latch-up state.
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Note the tLOOP effect on the rising edge of the input waveforms on SDA1 and SCL1.
Figure 2-2. Typical Waveforms, Inputs on Side 1
Figure 2-3 illustrates SDA2 and SCL2 of U1 being treated as inputs and driven by an I2C transmitter connected
to J3B/J4B (for SDA2) and J5B/J6B (for SCL2). The output waveforms for SDA1 and SCL1 are captured on the
oscilloscope at J3A/J4A and J5A/J6A respectively. Note the low level of the SDA1 and SCL1 outputs offset from
the ground level. This is due to the high output low level on side 1 designed to prevent a latch-up state.
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Note the offset of the output low level voltage from ground on SDA1 and SCL1.
Figure 2-3. Typical Waveforms, Inputs on Side 2
In addition to the cases shown here, the SDA and SCL signals also propagate in mutually opposing directions.
However, if using ISO1541, the SCL line is unidirectional and only allows the signal to propagate from SCL1 to
SCL2 and not vice-versa.
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3 Bill of Materials
The parts list for the ISO154xEVM is shown in Table 3-1.
Table 3-1. ISO154x EVM Bill of Materials
Item Qty. References Part Manufacturer
1 4 C1,C2,C3,C4 CAPACITOR, SMT, 0603, CERAMIC, 1.0 µF, 25 V, 10%,
X5R TAIYO_YUDEN/ANY
2 4 C5,C6,C7,C8 CAPACITOR, SMT, 0603, CERAMIC, 1.0 µF, 25 V, 10%,
X5R TAIYO_YUDEN/ANY
3 2 J1,J2 CONNECTOR, THU, TERMINAL BLOCK, 2.54 mm LS, 2P TYCO/ANY
4 8 R1,R2,R3,R4,R5,R6,R7,R8 RESISTOR, SMT, 0603, 1.0 kΩ, 0.1%, 1/10W PANASONIC/ANY
5 70
TP1,TP2,TP3,TP4,TP5,TP6,TP7,TP8,TP9,
TP10,TP11,TP12,TP13,TP14,TP15,TP16,
TP17,TP18,TP19,TP20,TP21,TP22,TP23,
TP24,TP25,TP26,TP27,TP28,TP29,TP30,
TP31,TP32,TP33,TP34,TP35,TP36,TP37,
TP38,TP39,TP40,TP41,TP42,TP43, TP44,
TP45,TP46,TP47,TP48,TP49,TP50,TP51,
TP52,TP53,TP54,TP55,TP56,TP57,TP58,
TP59,TP60,TP61,TP62,TP63,TP64,TP65,
TP66,TP67,TP68,TP69,TP70
HEADER, THU, 1P, MALE, SINGLE ROW SAMTEC/ANY
6 1 U1 IC, ISO1540, SMT, SOIC8D TI
7 1 U2 IC, ISO1541, SMT, SOIC8D TI
8 4 Rubber feet, SJ5303, Bumpon hemisphere 2M
Notes: 1. J3A on EVM silkscreen is TP30, TP63, TP33, TP32 grouped as single row 4-pin jumper.
2. J4A on EVM silkscreen is TP23, TP5, TP17, TP25 grouped as single row 4-pin jumper.
3. J5A on EVM silkscreen is TP36, TP65, TP39, TP38 grouped as single row 4-pin jumper
4. J6A on EVM silkscreen is TP27, TP6, TP20, TP24 grouped as single row 4-pin jumper.
5. J3B on EVM silkscreen is TP35, TP66, TP34, TP37 grouped as single row 4-pin jumper.
6. J4B on EVM silkscreen is TP29, TP7, TP2, TP26 grouped as single row 4-pin jumper.
7. J5B on EVM silkscreen is TP41, TP64, TP40, TP43 grouped as single row 4-pin jumper.
8. J6B on EVM silkscreen is TP31, TP8, TP4, TP28 grouped as single row 4-pin jumper
9. J7A on EVM silkscreen is TP44, TP68, TP47, TP46 grouped as single row 4-pin jumper.
10. J8A on EVM silkscreen is TP42, TP9, TP19, TP45 grouped as single row 4-pin jumper.
11. J9A on EVM silkscreen is TP49, TP69, TP51, TP50 grouped as single row 4-pin jumper.
12. J10A on EVM silkscreen is TP48, TP10, TP22, TP53 grouped as single row 4-pin jumper.
13. J7B on EVM silkscreen is TP54, TP70, TP57, TP56 grouped as single row 4-pin jumper.
14. J8B on EVM silkscreen is TP52, TP11, TP3, TP55 grouped as single row 4-pin jumper.
15. J9B on EVM silkscreen is TP61, TP67, TP60, TP62 grouped as single row 4-pin jumper.
16. J10B on EVM silkscreen is TP58, TP12, TP1, TP59 grouped as single row 4-pin jumper.
17. SJ5303 Bumpon Hemisphere: one each to be assembled at every corner of the board on the bottom side.
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4 ISO154xEVM Layout
Figure 4-1 shows the top-layer routing of the ISO154xEVM.
Figure 4-1. ISO154xEVM Top-layer Routing
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Figure 4-2 shows the bottom-layer ground planes (shaded areas).
Figure 4-2. ISO154xEVM Bottom-layer Ground Planes
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision * (June 2012) to Revision A (September 2022) Page
• Replaced Capacitor with SiO2 ........................................................................................................................... 2
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STANDARD TERMS FOR EVALUATION MODULES
1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or
documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance
with the terms set forth herein. User's acceptance of the EVM is expressly subject to the following terms.
1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility
evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not
finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For
clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions
set forth herein but rather shall be subject to the applicable terms that accompany such Software
1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,
or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production
system.
2Limited Warranty and Related Remedies/Disclaimers:
2.1 These terms do not apply to Software. The warranty, if any, for Software is covered in the applicable Software License
Agreement.
2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM
to User. Notwithstanding the foregoing, TI shall not be liable for a nonconforming EVM if (a) the nonconformity was caused by
neglect, misuse or mistreatment by an entity other than TI, including improper installation or testing, or for any EVMs that have
been altered or modified in any way by an entity other than TI, (b) the nonconformity resulted from User's design, specifications
or instructions for such EVMs or improper system design, or (c) User has not paid on time. Testing and other quality control
techniques are used to the extent TI deems necessary. TI does not test all parameters of each EVM.
User's claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects in the EVMs within ten (10)
business days after delivery, or of any hidden defects with ten (10) business days after the defect has been detected.
2.3 TI's sole liability shall be at its option to repair or replace EVMs that fail to conform to the warranty set forth above, or credit
User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the warranty
period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to repair or
replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall be
warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day
warranty period.
WARNING
Evaluation Kits are intended solely for use by technically qualified,
professional electronics experts who are familiar with the dangers
and application risks associated with handling electrical mechanical
components, systems, and subsystems.
User shall operate the Evaluation Kit within TI’s recommended
guidelines and any applicable legal or environmental requirements
as well as reasonable and customary safeguards. Failure to set up
and/or operate the Evaluation Kit within TI’s recommended
guidelines may result in personal injury or death or property
damage. Proper set up entails following TI’s instructions for
electrical ratings of interface circuits such as input, output and
electrical loads.
NOTE:
EXPOSURE TO ELECTROSTATIC DISCHARGE (ESD) MAY CAUSE DEGREDATION OR FAILURE OF THE EVALUATION
KIT; TI RECOMMENDS STORAGE OF THE EVALUATION KIT IN A PROTECTIVE ESD BAG.

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2
3Regulatory Notices:
3.1 United States
3.1.1 Notice applicable to EVMs not FCC-Approved:
FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software
associated with the kit to determine whether to incorporate such items in a finished product and software developers to write
software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or
otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition
that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference.
Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must
operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.
3.1.2 For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:
CAUTION
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.
FCC Interference Statement for Class A EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.
FCC Interference Statement for Class B EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
3.2 Canada
3.2.1 For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 or RSS-247
Concerning EVMs Including Radio Transmitters:
This device complies with Industry Canada license-exempt RSSs. Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
Concernant les EVMs avec appareils radio:
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
Concerning EVMs Including Detachable Antennas:
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.

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Concernant les EVMs avec antennes détachables
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le
présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le
manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de
l'émetteur
3.3 Japan
3.3.1 Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 日本国内に
輸入される評価用キット、ボードについては、次のところをご覧ください。
http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page
3.3.2 Notice for Users of EVMs Considered “Radio Frequency Products” in Japan: EVMs entering Japan may not be certified
by TI as conforming to Technical Regulations of Radio Law of Japan.
If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required to follow the
instructions set forth by Radio Law of Japan, which includes, but is not limited to, the instructions below with respect to EVMs
(which for the avoidance of doubt are stated strictly for convenience and should be verified by User):
1. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal
Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for
Enforcement of Radio Law of Japan,
2. Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to
EVMs, or
3. Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note
that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.
【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて
いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの
措置を取っていただく必要がありますのでご注意ください。
1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用
いただく。
2. 実験局の免許を取得後ご使用いただく。
3. 技術基準適合証明を取得後ご使用いただく。
なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。
上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ
ンスツルメンツ株式会社
東京都新宿区西新宿６丁目２４番１号
西新宿三井ビル
3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧ください。http:/
/www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page
3.4 European Union
3.4.1 For EVMs subject to EU Directive 2014/30/EU (Electromagnetic Compatibility Directive):
This is a class A product intended for use in environments other than domestic environments that are connected to a
low-voltage power-supply network that supplies buildings used for domestic purposes. In a domestic environment this
product may cause radio interference in which case the user may be required to take adequate measures.

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4EVM Use Restrictions and Warnings:
4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT
LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling
or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information
related to, for example, temperatures and voltages.
4.3 Safety-Related Warnings and Restrictions:
4.3.1 User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user
guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and
customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input
and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or
property damage. If there are questions concerning performance ratings and specifications, User should contact a TI
field representative prior to connecting interface electronics including input power and intended loads. Any loads applied
outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible
permanent damage to the EVM and/or interface electronics. Please consult the EVM user guide prior to connecting any
load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative.
During normal operation, even with the inputs and outputs kept within the specified allowable ranges, some circuit
components may have elevated case temperatures. These components include but are not limited to linear regulators,
switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the
information in the associated documentation. When working with the EVM, please be aware that the EVM may become
very warm.
4.3.2 EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the
dangers and application risks associated with handling electrical mechanical components, systems, and subsystems.
User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,
affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic
and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely
limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and
liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or
designees.
4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,
state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all
responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and
liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local
requirements.
5. Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate
as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as
accurate, complete, reliable, current, or error-free.
6. Disclaimers:
6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY MATERIALS PROVIDED WITH THE EVM (INCLUDING, BUT NOT
LIMITED TO, REFERENCE DESIGNS AND THE DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL
FAULTS." TI DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT
NOT LIMITED TO ANY EPIDEMIC FAILURE WARRANTY OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADE
SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS.
6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS SHALL BE
CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY OTHER INDUSTRIAL OR
INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD PARTY, TO USE THE
EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY INVENTION, DISCOVERY OR
IMPROVEMENT, REGARDLESS OF WHEN MADE, CONCEIVED OR ACQUIRED.
7. USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS
LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,
EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY
HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS. THIS OBLIGATION SHALL APPLY
WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY OTHER LEGAL
THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED.

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8. Limitations on Damages and Liability:
8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE,
INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE
TERMS OR THE USE OF THE EVMS , REGARDLESS OF WHETHER TI HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, COST OF REMOVAL OR
REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, RETESTING,
OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS, LOSS OF SAVINGS, LOSS OF
USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL BE BROUGHT AGAINST TI
MORE THAN TWELVE (12) MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS
OCCURRED.
8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY USE OF AN EVM PROVIDED
HEREUNDER, INCLUDING FROM ANY WARRANTY, INDEMITY OR OTHER OBLIGATION ARISING OUT OF OR IN
CONNECTION WITH THESE TERMS, , EXCEED THE TOTAL AMOUNT PAID TO TI BY USER FOR THE PARTICULAR
EVM(S) AT ISSUE DURING THE PRIOR TWELVE (12) MONTHS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE
CLAIMED. THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT.
9. Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s)
will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in
a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable
order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s),
excluding any postage or packaging costs.
10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas,
without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to
these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas.
Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief
in any United States or foreign court.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2019, Texas Instruments Incorporated

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AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD
PARTY INTELLECTUAL PROPERTY RIGHTS.
These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate
TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable
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Copyright © 2022, Texas Instruments Incorporated