IL3522E - NVE - Product.Network

IL3522

IsoLoop® is a registered trademark of NVE Corporation.

*U.S. Patent number 5,831,426; 6,300,617 and others.

REV. K

NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation

Isolated RS485/RS422 Interface

Functional Diagram

ISODE

IL3522

IL3522 Receiver

RE R V

(

A−B

)

H Z X

L H ≥ 200 mV

L L ≤−200 mV

L H Open

IL3522 Driver

DE D V

(

Y−Z

)

L X Z

H H ≥ 200 mV

H L ≤−200 mV

Features

• 3.3 / 5 V Input Supply Compatible

• 40 Mbps Data Rate

• 20 ns Propagation Delay

• 1 ns Pulse Skew

• Low Quiescent Supply Current

• 2500 VRMS Isolation (1 minute)

• 20 kV/μs Transient Immunity

• 15 kV bus ESD protection

• Low EMC footprint

• Thermal Shutdown Protection

• −40°C to +85°C Temperature Range

• 16-pin SOIC Package

• UL1577 and IEC 61010-2001 Approved

Applications

• Security Networks

• Building Environmental Controls

• Industrial Control Networks

• Gaming Systems

• Factory Aut o ma tion

Description

The IL3522 is a galvanically isolated, high-speed differential bus

transceiver, designed for bidirectional data communication on

balanced transmission lines. The device uses NVE’s patented*

IsoLoop spintronic Giant Magnetoresistance (GMR) technology.

The IL3585 delivers an exceptional 2.3 V differential output into a

54 Ω load over the supply range of 4.5 V to 5.5 V. This provides

better data integrity over longer cable lengths, even at data rates as

high as 40 Mbps. The device is also compatible with 3.3 V input

supplies, allowing interface to standard microcontrollers without

additional level shifting.

Current limiting and thermal shutdown features protect against output

short circuits and bus contention that may caus e excessive power

dissipation. Receiver inputs feature a “fail-safe if open” design,

ensuring a logic high R-output if A/B are floating.

H = High Level, L = Low Level

X = Irrelevant, Z = High Impedance

IL3522

Absolute Maximum Ratings(11)

Parameters Symbol Min. Typ. Max. Units Test Conditions

Storage Temperature TS −65 150 °C

Ambient Operating Temperature TA −40 100 °C

Voltage Range at any Bus Pin −7 12 V

Supply Voltage

(

)

DD1, VDD2 −0.5 7 V

Digital Input Voltage −0.5 VDD + 0.5 V

Digital Output Voltage −0.5 VDD + 1 V

ESD (all bus nodes) 15 kV HBM

Recommended Operating Conditions

Parameters Symbol Min. Typ. Max. Units Test Conditions

Supply Voltage VDD1

VDD2 3.0

4.5 5.5

5.5 V

Input Voltage at any Bus Terminal

(separately or com mon mode) VI

VIC 12

−7 V

High-Level Digital Input Voltage VIH 2.4

3.0 V

DD1 V

VDD1 = 3.3 V

VDD1 = 5.0 V

Low-Level Digital Input Voltage VIL 0 0.8 V

Differential Input Voltage

(

)

ID +12/−7 V

High-Level Output Current (Driver) IOH 60 mA

High-Level Digital Output Current

(Receiver) IOH 8 mA

Low-Level Output Current (Driver) IOL −60 mA

Low-Level Digital Output Current

(Receiver) IOL −8 mA

Ambient Operating Temperature TA −40 85 °C

Digital Input Signal Rise and Fall

Times tIR, tIF DC Stable

Insulation Specifications

Parameters Symbol Min. Typ. Max. Units Test Conditions

Creepage Distance (external) 8.08 mm

Barrier Impedance > 1014 || 7 Ω || pF

Leakage Current 0.2 μARMS 240 VRMS, 60 Hz

Safety and Approvals

IEC61010-2001

TUV Certificate Numbers: N1502812, N1502812-101

Classification: Reinforc e d Insulation

Model Package Pollution Degree Material Group Max. Working Voltage

IL3585 SOIC (0.3") II III 300 VRMS

UL 1577

Component Recognition Program File Number: E207481

Rated 2500VRMS for 1 minute

Soldering Profile

Per JEDEC J-STD-020C, MSL=2

IL3522

IL3522 Pin Connections

1 VDD1 Input Power Supply

2 GND1 Input Power Supply Ground Return

(pin 2 is internally connected to pin 8)

3 R Output Data from Bus

RE Read Data Enable

(if RE is high, R = high impedance)

5 DE Drive Enable

6 D Data Input to Bus

7 NC No Internal Connection

8 GND1 Input Power Supply Ground Return

(pin 8 is internally connected to pin 2)

9 GND2 Output Power Supply Ground Return

(pin 9 is internally connected to pin 15)

10 ISODE

Isolated DE Output for use in Profibus

applications where the state of the isolated

drive enable node needs to be monitored

11 Y Y Bus (Drive – True)

12 Z Z Bus (Drive – Inverse)

13 B B Bus (Receive – Inverse)

14 A A Bus (Receive – True)

15 GND2 Output Power Supply Ground Return

(pin 15 is internally connected to pin 9)

16 VDD2 Output Power Supply

VDD1VDD2

GND1

GND2

RE B

DE Z

ISODE

GND1GND2

IL3522

Driver Section

Electrical Specifications are Tmin to Tmax and VDD = 4.5 V to 5.5 V, unless otherwise stated.

Parameters Symbol Min. Typ.(5) Max. Units Test Conditions

Input Clamp Voltage VI

−1.5 V IL = −18 mA

Output voltage VO V

DD V IO = 0

Differential Output Voltage

(

)

|VOD1| VDD V IO = 0

Differential Output Voltage

(

)

|VOD2| 2.5 3 5 V RL = 54 Ω, VDD = 5 V

Differential Output Voltage

(

12, 6

)

VOD3 2.3 5 V RL = 54 Ω, VDD = 4.5 V

Change in Magnitude of Differential

Output Voltage(7) Δ|VOD| ±0.2 V RL = 54 Ω or 100 Ω

Common Mode Output Voltage VOC 3 V RL = 54 Ω or 100 Ω

Change in Magnitude of Common

Mode Output Voltage(7) Δ|VOC| ±0.2 V RL = 54 Ω or 100 Ω

Output Current(4) IO

−0.8 mA Output Disabled, VO = 12

O = −7

High Level Input Current IIH 10 μA VI = 3.5 V

Low Level Input Current IIL −10 μA VI = 0.4 V

Absolute |Short-circuit Output Current| IOS 250 mA −7 V > VO < 12 V

Supply Current VDD1 = +5 V

VDD1 = +3.3 V IDD1

IDD1 4

3 6

4 mA No Load

(Outputs Enabled)

Notes (apply to both driver and receiver sections):

1. All voltages are with respect to network ground except differential I/O bus voltages.

2. Differential input voltage is measured at the noninverting terminal A with respect to the inverting terminal B.

3. Skew limit is the maximum propagation delay difference between any two devices at 25°C.

4. The power-off measurement in ANSI Standard EIA/TIA-422-B applies to disabled outputs only and is not applied to combined inputs and

outputs.

5. All typical values are at VDD1,VDD2 = 5 V or VDD1= 3.3 V and TA = 25°C.

6. −7 V < VCM < 12 V; 4.5 V < VDD < 5.5 V.

7. Δ|VOD| and Δ|VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from one logic state to

the other.

8. This applies for both power on and power off, refer to ANSI standard RS-485 for exact condition. The EIA/TIA-422-B limit does not apply

for a combined driver and receiver terminal.

9. Includes 10 ns read enable time. Maximum propagation delay is 25 ns after read assertion.

10. Pulse skew is defined as |tPLH – tPHL| of each channel.

11. Absolute Maximum specifications mean the device will not be damaged if operated under these conditions. It does not guarantee

performance.

12. Differential output voltage is measured at terminal Y with respect to Z.

13. The relevant test and measurement methods are given in the Electromagnetic Compatibility section on p. 6.

14. External magnetic field immunity is improved by this factor if the field direction is “end-to-end” rather than to “pin-to-pin” (see diagram on p. 6).

IL3522

Receiver Section

Electrical Specifications are Tmin to Tmax and VDD = 4.5 V to 5.5 V, unless otherwise stated.

Parameters Symbol Min. Typ.(5) Max. Units Test Conditions

Positive-going Input Threshold

Voltage(2) VIT+ 0.2 V −7 V > VCM < 12 V

Negative-going Input Threshold

Voltage(2) VIT- −0.2 V −7 V > VCM < 12 V

Hysteresis Voltage (VIT+ − VIT-) VHYS 40 mV VCM = 0 V, T = 25°C

High Level Digital Output Voltage VOH VDD – 0.2 VDD V

VID = 200 mV

IOH = −20 μA

Low Level Digital Output Voltage VOL 0.2 V

VID = −200 mV

IOH = 20 μA

High-impedance-state output current IOZ ±1 μA VO=0.4 to (VDD2−0.5) V

Line Input Current

(

)

I 1 mA VI = 12 V

−0.8 mA VI = −7 V

Input Resistance RI 20 kΩ

Supply Current IDD2 5 16 mA

No load

(Outputs Enabled)

Switching Characteristics VDD1 = +5 V, VDD2 = +5 V

Parameters Symbol Min. Typ.(5) Max. Units Test Conditions

Data Rate 40 Mbps RL = 54 Ω, CL = 50 pF

Propagation Delay(2, 9) tPD 27 35 ns

VO = −1.5 to 1.5 V,

CL = 15 pF

Pulse Skew(2, 10) t

SK(P) 1 6 ns

VO = −1.5 to 1.5 V,

CL = 15 pF

Skew Limit

(

)

(LIM) 2 12 ns RL = 54 Ω, CL = 50 pF

Output Enable Time To High Level tPZH 15 25 ns CL = 15 pF

Output Enable Time To Low Level tPZL 15 25 ns CL = 15 pF

Output Disable Time From High Level tPHZ 15 25 ns CL = 15 pF

Output Disable Time From Low Level tPLZ 15 25 ns CL = 15 pF

VDD1 = +3.3 V, VDD2 = +5 V

Parameters Symbol Min. Typ.(5) Max. Units Test Conditions

Data Rate 40 Mbps RL = 54 Ω, CL = 50 pF

Propagation Delay(2, 9) tPD 30 38 ns

VO = −1.5 to 1.5 V,

CL = 15 pF

Pulse Skew(2, 10) t

SK(P) 1 6 ns

VO = −1.5 to 1.5 V,

CL = 15 pF

Skew Limit

(

)

(LIM) 4 12 ns RL = 54 Ω, CL = 50 pF

Output Enable Time To High Level tPZH 17 27 ns CL = 15 pF

Output Enable Time To Low Level tPZL 17 27 ns CL = 15 pF

Output Disable Time From High Level tPHZ 17 27 ns CL = 15 pF

Output Disable Time From Low Level tPLZ 17 27 ns CL = 15 pF

Magnetic Field Immunity(13) VDD1 = +5 V, VDD2 = +5 V

Power Frequency Magnetic Immunity HPF 2800 3500 A/m 50Hz/60Hz

Pulse Magnetic Field Immunity HPM 4000 4500 A/m t

= 8µs

Damped Oscillatory Magnetic Field HOSC 4000 4500 A/m 0.1Hz – 1MHz

Cross-axis Immunity Multiplier

(

)

X 2.5

VDD1 = +3.3 V, VDD2 = +5 V

Power Frequency Magnetic Immunity HPF 1000 1500 A/m 50Hz/60Hz

Pulse Magnetic Field Immunity HPM 1800 2000 A/m t

= 8µs

Damped Oscillatory Magnetic Field HOSC 1800 2000 A/m 0.1Hz – 1MHz

Cross-axis Immunity Multiplier

(

)

X 2.5

IL3522

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

Electrostatic Discharge Sensitivity

This product has been tested for electrostatic sensitivity to the limits stated in the specifications. However, NVE recommends that all integrated

circuits be handled with appropriate care to avoid damage. Damage caused by inappropriate handling or storage could range from performance

degradation to complete failu re.

Power Consumption

IsoLoop Isolators achieve their low power consumption from the way they transmit data across the isolation barrier. By detecting the edge

transitions of the input logic signal and converting these to narrow current pulses, a magnetic field is created around the GMR Wheatstone

bridge. Depending on the direction of the magnetic field, the bridge causes the output comparator to switch following the input logic signal.

Since the current pulses are narrow, about 2.5 ns, the power consumption is independent of mark-to-space ratio and solely dependent on

frequency. This has obvious advantages over optocouplers, which have power consumption heavily dependent on frequency and time.

Data Rate (Mbps) IDD1 IDD2

1 100 μA 100 μA

10 1 mA 1 mA

20 2 mA 2 mA

40 4 mA 4 mA

Table 2. Typical Dynamic Supply Curr e nts.

Power Supply Decoupling

Both VDD1 and VDD2 must be bypassed with 47 nF ceramic capacitors. These should be placed as close as possible to VDD pins for proper

operation. Additionally, VDD2 should be bypassed with a 10 µF tantalum capacitor.

DC Correctness

The IL3585 incorporates a patented refresh circuit to maintain the correct output state with respect to data input. At power up, the bus outputs

will follow the Function Table shown on Page 1. The DE input should be held low during power-up to eliminate false drive data pulses from the

bus. An external power supply monitor to minimize glitches caused by slow power-up and power-down transients is not required.

Electromagnetic Compatibility

The IL3522 is fully compliant with generic EMC standards EN50081, EN50082-1 and the umbrella line-voltage standard for Information

Technology Equipment (ITE) EN61000. The IsoLoop Isolator’s Wheatstone bridge configuration and differential magnetic field signaling ensure

excellent EMC performance against all relevant standards. NVE conducted compliance tests in the categories below:

EN50081-1

Residential, Commercial & Light Industrial

Methods EN55022, EN55014

EN50082-2: Industrial Environment

Methods EN61000-4-2 (ESD), EN61000-4-3 (Electromagnetic Field Immunity), EN61000-4-4 (Electrical Transient Immunity),

EN61000-4-6 (RFI Immunity), EN61000-4-8 (Power Frequency Magnetic Field Immunity), EN61000-4-9 (Pulsed Magnetic

Field), EN61000-4-10 (Damped Oscillatory Magnetic Field)

ENV50204

Radiated Field from Digital Telephones (Immunity Test)

Immunity to external magnetic fields is even higher if the field direction is “end-to-end” (rather than to “pin-to-pin”) as shown in

the diagram at right.

Application Information

Receiver Features

The receiver includes a “fail-safe if open” function that guarantees a high level output if the receiver inputs are unconnected (floating). The

receiver output “R” has tri-state capability via the active low RE input.

Driver Features

The RS-422 driver is differential output and delivers at least 1.5 V across a 54 Ω load. Drivers feature low propagation delay skew to maximize

bit width and minimize EMI. Drivers have tri-state capability via the active-high DE input.

Receiver Data Rate, Cables and Terminations

The IL3522 is intended for networks up to 4,000 feet (1,200 m), but the maximum data rate decreases as cable length increases. Twisted pair

cable should be used in all networks since they tend to pick up noise and other electromagnetically induced voltages as common mode signals,

which are effectively rejected by the differential receivers.

IL3522

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

Fail-Safe Operation

“Fail-safe operation” is defined here as the forcing of a logic high state on the “R” output in response to an open-circuit condition between the

“A” and “B” lines of the bus, or when no drivers are active on the bus.

Proper biasing can ensure fail-safe operation, that is a known state when there are no active drivers on the bus. IL3000-Series Isolated

Transceivers include internal pull-up and pull-down resistors of approximately 30 kΩ in the receiver section (RFS-INT; see figure below). These

internal resistors are designed to ensure failsafe operation but only if there are no termination resistors. The entire VDD will appear between inputs

“A” and “B” if there is no loading and no termination resistors, and there will be more than the required 200 mV with up to four RS-422 worst-

case Unit Loads of 12 kΩ. Many designs operating below 1 Mbps or less than 1,000 feet are unterminated. Termination resistors may not be

necessary for very low data rates and very short cable runs because reflections have time to settl e before data sampli ng, which occurs at the

middle of the bit interval.

In busses with low-impedance termination resistors, however, the differential voltage across the conductor pair will be close to zero with no

active drivers. In this case the state of the bus is indeterminate, and the idle bus will be susceptible to noise. For example, with 120 Ω termination

resistors (RT) on each end of the cable, and four Unit Loads (12 kΩ each), without external fail-safe biasing resistors the internal pull-up and pull-

down resistors will produce a voltage between inputs “A” and “B” of only about 5 mV. This is not nearly enough to ensure a known state.

External fail-safe biasing resistors (RFS-EXT) at one end of the bus can ensure fail-safe operation with a terminated bus. Resistors should be

selected so that under worst-case power supply and resistor tolerances there is at least 200 mV across the conductor pair with no active drivers to

meet the input sensitivity specification of the RS-422 standard.

Using the same value for pull-up and pull-down biasing resistors maintains balance for positive- and negative going transitions. Lower-value

resistors increase inactive noise immunity at the expense of quiescent power consumption. Note that each Unit Load on the bus adds a worst-case

loading of 12 kΩ across the conductor pair, and 32 Unit Loads add 375 Ω worst-cas e loading. The more loads on the bus, the lower the required

values of the biasing resistors.

In the example with two 120 Ω termination resistors and four Unit Loads, 560 Ω external biasing resistors provide more than 200 mV between

“A” and “B” with adequate margin for power supply variations and resistor tolerances. This ensures a known state when there are no active

drivers. Other illustrative examples are shown in the table below:

Fail-Safe Biasing

30K 30K

GND

5 V

FS-EXT

FS-INT

Fail-Safe

TLoading Operation?

None Four unit loads (12 kΩ ea.) 238 mV Yes

120 ΩFour unit loads (12 kΩ ea.) 5 mV No

560 Ω120 ΩFour unit loads (12 kΩ ea.) 254 mV Yes

510 Ω120 Ω32 unit loads (12 kΩ ea.) 247 mV Yes

Nominal VA-B

(inactive)

FS-EXT

Internal Only

IL3522

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

Package Drawings, Dimensions and Specifications

0.3" 16-pin SOIC Package

NOM

Pin 1 identified by

either an indent

or a marked dot

0.287 (7.29)

0.300 (7.62)



Dimensions in inches (mm)

0.08 (2.0)

0.10 (2.5)

0.092 (2.34)

0.105 (2.67)

0.397 (10.1)

0.413 (10.5)

0.013 (0.3)

0.020 (0.5)

0.394 (10.00)

0.419 (10.64)

0.040 (1.0)

0.060 (1.5) 0.004 (0.1)

0.012 (0.3)

0.007 (0.2)

0.013 (0.3) 0.016 (0.4)

0.050 (1.3)

Pin spacing is a BASIC

dimension; tolerances 

do not accumulate

NOTE:

Ordering Information and Valid part Numbers

IL 3522 E TR13

Bulk Packaging

Blank = Tube

TR13 = 13'' Tape and Reel

Package

Blank = 80/20 Tin/Lead Plating

E = RoHS Compliant

Base Part Number

3522 = RS-422 Transceiver

Product Family

IL = Isolators

Valid Part Numbers

IL3522

IL3522E

IL3522TR13

IL3522E TR13

RoHS

COMPLIANT

IL3522

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

Revision History

ISB-DS-001-IL3522-K

February 2012

• Update terms and conditions.

ISB-DS-001-IL3522-J

• Added clarification of internal ground connections (p. 3).

ISB-DS-001-IL3522-I

• Revised maximum Receiver Section Supply Current to 16 mA.

ISB-DS-001-IL3522-H

• Added low EMC footprint.

ISB-DS-001-IL3522-G

• Added bus-protection ESD specification (15 kV).

ISB-DS-001-IL3522-F

• Added magnetic field immunity and electromagnetic compatibility specifications.

• Added note on package drawing that pin-spacing tolerances are non-accumulating.

ISB-DS-001-IL3522-E

• Changed ordering information to reflect that devices are now fully RoHS compliant

with no exemptions.

ISB-DS-001-IL3522-D

• Reorganized specification tables

ISB-DS-001-IL3522-C

• Eliminated soldering profile chart

ISB-DS-001-IL3522-B

• Specified “open” input condition in truth table

• Added fail-safe biasing section.

• Revised package drawing.

ISB-DS-001-IL3522-A

Initial Release

IL3522

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

Datasheet Limitations

The information and data provided in datasheets shall define the specification of the product as agreed between NVE and its customer, unless NVE and

customer have explicitly agreed otherwise in writing. All specifications are based on NVE test protocols. In no event however, shall an agreement be

valid in which the NVE product is deemed to offer functions and qualities beyond those described in the datasheet.

Limited Warranty and Liability

Information in this document is believed to be accurate and reliable. However, NVE does not give any representations or warranties, expressed or

implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information.

In no event shall NVE be liable for any indirect, incidental, punitive, special or consequential damages (including, without limitation, lost profits, lost

savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on

tort (including negligence), warranty, breach of contract or any other legal theory.

Right to Make Changes

NVE reserves the right to make changes to information published in this document including, without limitation, specifications and product descriptions

at any time and without notice. This document supersedes and replaces all information supplied prior to its publication.

Use in Life-Critical or Safety-Critical Applications

Unless NVE and a customer explicitly agree otherwise in writing, NVE products are not designed, authorized or warranted to be suitable for use in life

support, life-critical or safety-critical devices or equipment. NVE accepts no liability for inclusion or use of NVE products in such applications and such

inclusion or use is at the customer’s own risk. Should the customer use NVE products for such application whether authorized by NVE or not, the

customer shall indemnify and hold NVE harmless against all claims and damages.

Applications

Applications described in this datasheet are illustrative only. NVE makes no representation or warranty that such applications will be suitable for the

specified use without further testing or modification.

Customers are responsible for the design and operation of their applications and products using NVE products, and NVE accepts no liability for any

assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the NVE prod uct is suitable and fit for

the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customers. Customers should

provide appropriate design and operating safeguards to minimize the risks associated with their applications and products.

NVE does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s

applications or products, or the application or use by customer’s third party customers. The customer is responsible for all necessary testing for the

customer’s applications and products using NVE products in order to avoid a default of the applications and the products or of the application or use by

customer’s third party customers. NVE accepts no liability in this respect.

Limiting Values

Stress above one or more limiting values (as defined in the Abso lute Maximum Ratings System of IEC 60134) will cause permanent damage to the

device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the recommended

operating conditions of the datasheet is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the

quality and reliability of the device.

Terms and Conditions of Sale

In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. NVE hereby expressly objects to

applying the customer’s general terms and conditions with regard to the purchase of NVE products by customer.

No Offer to Sell or License

Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication

of any license under any copyrights, patents or other industrial or intellectual property rights.

Export Control

This document as well as the items described herein may be subject to export control regulations. Export might require a prior authorization from nati onal authorities.

Automotive Qualified Products

Unless the datasheet expressly states that a specific NVE product is automotive qualified, the product is not suitable for automotive use. It is neither

qualified nor tested in accordance with automotive testing or application requirements. NVE accepts no liability for inclusion or use of non-automotive

qualified products in automotive equipment or applications.

In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall

use the product without NVE’s warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the

product for automotive applications beyond NVE’s specifications such use shall be solely at customer’s own risk, and (c) customer fully indemnifies

NVE for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NVE’s

standard warranty and NVE’s product specifications.

IL3522

NVE Corporation 11409 Valley View Road Eden Prairie, MN 55344-3617 USA Telephone: (952) 829-9217 Fax (952) 829-9189 Internet: www.isoloop.com

An ISO 9001 Certified Company

NVE Corporation

11409 Valley View Road

Eden Prairie, MN 55344-3617 USA

Telephone: (952) 829-9217

Fax: (952) 829-9189

www.nve.com

e-mail: iso-info@nve.com

All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.

ISB-DS-001-IL3522-K February 2012