TMP122资料

TMP122TMP124

SBOS272B – JUNE 2003 – REVISED DECEMBER 2003

1.5°C Accurate ProgrammableDigital Temperature Sensors

with SPI™ Interface

FEATURES

qDIGITAL OUTPUT: SPI-Compatible InterfaceqPROGRAMMABLE RESOLUTION:9- to 12-Bits + SignqACCURACY:

±1.5°C from –25°C to +85°C (max)±2.0°C from –40°C to +125°C (max)qLOW QUIESCENT CURRENT: 50µAqWIDE SUPPLY RANGE: 2.7V to 5.5VqTINY SOT23-6 AND SO-8 PACKAGESqOPERATION TO 150°C

qPROGRAMMABLE HIGH/LOW SETPOINTS

DESCRIPTION

The TMP122 and TMP124 are SPI-compatible temperaturesensors available in SOT23-6 and SO-8 packages. Requir-ing only a pull-up resistor for complete function, the TMP122and TMP124 temperature sensors are capable of measuringtemperatures within 2°C of accuracy over a temperaturerange of –40°C to +125°C, with operation up to 150°C.Programmable resolution, programmable set points and shutdown function provide versatility for any application. Lowsupply current and a supply range from 2.7V to 5.5V makethe TMP122 and TMP124 excellent candidates for low-power applications.

The TMP122 and TMP124 are ideal for extended thermalmeasurement in a variety of communication, computer, con-sumer, environmental, industrial, and instrumentation appli-cations.

APPLICATIONSqqqqqqqqqPOWER-SUPPLY TEMPERATURE MONITORINGCOMPUTER PERIPHERAL THERMAL PROTECTIONNOTEBOOK COMPUTERSCELL PHONESBATTERY MANAGEMENTOFFICE MACHINESTHERMOSTAT CONTROLSENVIRONMENTAL MONITORING and HVACELECTROMECHANICAL DEVICE TEMPERATURETemperature1DiodeTemp.Sensor∆ΣA/DConverterControlLogic6Temperature1DiodeTemp.Sensor∆ΣA/DConverterControlLogic8SO/ISO/IV+ALERTSCKGND2SerialInterface5CS2SerialInterface7CSNCConfigand TempRegister43OSCConfigand TempRegister6NCV+3OSCSCKGND45ALERTTMP122TMP124Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

SPI is a registered trademark of Motorola. All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.Products conform to specifications per the terms of Texas Instrumentsstandard warranty. Production processing does not necessarily includetesting of all parameters.Copyright © 2003, Texas Instruments Incorporated

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ABSOLUTE MAXIMUM RATINGS(1)

Power Supply, V+..................................................................................7VInput Voltage(2).......................................................................–0.3V to 7VInput Current.....................................................................................10mAOperating Temperature Range......................................–55°C to +150°CStorage Temperature Range.........................................–60°C to +150°CJunction Temperature (TJ Max)....................................................+150°CLead Temperature (soldering).......................................................+300°CNOTES: (1) Stresses above those listed under “Absolute Maximum Ratings”may cause permanent damage to the device. Exposure to absolute maximumconditions for extended periods may affect device reliability. (2) Input voltagerating applies to all TMP122 and TMP124 input voltages.

ELECTROSTATIC

DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Texas Instru-ments recommends that all integrated circuits be handled withappropriate precautions. Failure to observe proper handlingand installation procedures can cause damage.

ESD damage can range from subtle performance degradationto complete device failure. Precision integrated circuits may bemore susceptible to damage because very small parametricchanges could cause the device not to meet its publishedspecifications.

PACKAGE/ORDERING INFORMATION

PACKAGEDESIGNATOR(1)

DBV

SPECIFIEDTEMPERATURE

RANGE–40°C to +125°C

PACKAGEMARKINGT122

ORDERINGNUMBERTMP122AIDBVTTMP122AIDBVRTMP124AIDTMP124AIDR

TRANSPORTMEDIA, QUANTITYTape and Reel, 250Tape and Reel, 3000

Rails, 100

Tape and Reel, 2500

PRODUCTTMP122

PACKAGE-LEAD

SOT23-6

\"\"

\"\"

\"\"

\"\"

\"\"

TMP124SO-8D–40°C to +125°CT124

NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.

PIN CONFIGURATIONS

Top ViewSOT23-6Top ViewSO-8ALERTGNDV+1236SI/OSO/I1234T122TMP122T1248765V+CSNCALERTSCCSNCSCKGNDTMP124NC = No Connection2

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ELECTRICAL CHARACTERISTICS

At TA = –40°C to +125°C, and V+ = 2.7V to 5.5V, unless otherwise noted.

TMP122, TMP124

PARAMETER

TEMPERATURE INPUTRange

Accuracy (Temperature Error)

CONDITION

MIN–40

–25°C to +85°C–40°C to +125°C–55°C to +150°C

–0.3

Selectable

±0.5±1.0±1.50.1±0.0625TYP

MAX+125±1.5±2.0+0.3

UNITS°C°C°C°C°C/V°C

vs SupplyResolution(1)

DIGITAL INPUT/OUTPUTInput Logic Levels:VIHVIL

Input Current, SO/I, SCK, CSOutput Logic Levels:VOL SO/IVOH SO/IVOL ALERT

Leakage Current ALERT

Input Capacitance, SO/I, SCK, CS, ALERTResolution

Conversion Time

0.7(V+)

0V ≤ VIN ≤ V+ISINK = 3mAISOURCE = 2mAISINK = 4mA0V ≤ VIN ≤ 6VSelectable9-Bit + Sign10-Bit + Sign11-Bit + Sign12-Bit + Sign

2.7

IQISD

Serial Bus InactiveSerial Bus Inactive

–40–55–60

SOT23-6 Surface-MountSO-8 Surface-Mount

200150500.1

0.3(V+)±10.4

(V+)–0.4

0.4±1

2.5

9 to 12 + Sign

3060120240

VVµAVVVµApFBitsmsmsmsmsVµAµA°C°C°C°C/W°C/W

40801603205.5751+125+150+150

POWER SUPPLYOperating RangeQuiescent CurrentShutdown CurrentTEMPERATURE RANGESpecified RangeOperating RangeStorage Range

Thermal Resistance, θJA

NOTE: (1) Specified for 12-bit resolution.

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TYPICAL CHARACTERISTICS

At TA = +25°C, and V+ = 5.0V, unless otherwise noted.

QUIESCENT CURRENT vs TEMPERATURE701.00.90.860V+ = 5V0.70.6SHUTDOWN CURRENT vs TEMPERATUREISD (µA)V+ = 2.7VSerial Bus Inactive–60–40–20020406080100120140IQ (µA)500.50.40.30.20.10.0–0.1–60–40–200204060801001201404030Temperature (°C)Temperature (°C)CONVERSION TIME vs TEMPERATURE4002.01.5TEMPERATURE ACCURACY vs TEMPERATURETemperature Error (°C)Conversion Time (ms)1.00.50.0–0.5–1.0–1.53 typical units 12-bit resolution.–60–40–20020406080100120140160300V+ = 5V200V+ = 2.7V100–60–40–200204060Temperature (°C)12-bit resolution.80100120140–2.0Temperature (°C)4

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APPLICATIONS INFORMATION

The TMP122 and TMP124 digital temperature sensors areoptimal for thermal management and thermal protection appli-cations. The TMP122/TMP124 are SPI interface-compatibleand specified for a temperature range of –40°C to +125°C.The TMP122/TMP124 require minimal external componentsfor operation, needing only a pull-up resistor on the ALERTpin and a bypass capacitor on the supply. Bypass capacitorsof 0.1µF is recommended. Figure 1 shows typical connec-tions for the TMP122 and TMP124.

COMMUNICATING WITH THE TMP122

The TMP122/TMP124 converts continuously. If CS is broughtlow during a conversion the conversion process continues, butthe last completed conversion is available at the output regis-ter. Communication with the TMP122/TMP124 is initiated bypulling CS low. The first 16 clocks of data transfer will returntemperature data from the temperature sensors. The 16-bitdata word is clocked out sign bit first, followed by the MSB. Anyportion of the 16-bit word may be read before raising CS. If theuser wishes to continue with CS low, the following 16 clockstransfer in a READ or WRITE command. READ and WRITEcommands are described in Tables I and II.The READ command contains an embedded address in bitsD4 and D3 to identify which register to read. Bits D4 and D3are internally registered and will hold their value following aREAD command until a entire 16-bit read is completed by theuser. The completion of the 16-bit READ acknowledges thatthe READ command has been completed. If the user issuesa READ command and then raises CS with less than 16subsequent clocks, the data from that register will be availableat the next fall of CS. The registered READ address willremain in effect until a full 16 clocks have been received. Afterthe completion of a 16-bit READ from the part, the READaddress is reset to return data from the Temperature Register.A WRITE command to a register will not change the READaddress registered. For further discussion on the READ ad-dress register, see the Read Address Register section.Multiple commands may be strung together as illustrated inFigure 2. The TMP122/TMP124 accepts commands alternat-ing with 16-bit response data. On lowering CS, the partalways responds with a READ from the address locationindicated by the READ address register. If the next com-mand is a READ command then data is returned from theaddress specified by the READ command with the 16th clockresetting the READ address register to the default tempera-ture register. The TMP122/TMP124 then expect a 16-bitcommand. If the command is a WRITE command, then the16 clocks following the command will again return tempera-ture data.

Figures 3, 4, 5, and 6 detail the communication sequences.

V+V+3SCKSO/I46TMP1225210.1µFALERT(Output)SO/ISCKCSNC12387TMP12460.1µFCSNCALERT(Output)GNDNOTE: Alert requirespull-up resistor (open drain).NC indicates pin should be leftopen or floating.GNDFIGURE 1. Typical Connections of the TMP122 and TMP124.To maintain accuracy in applications requiring air or surfacetemperature measurement, care should be taken to isolatethe package and leads from ambient air temperature.

CS

16-BitWRITE/EmbeddedAddress

SO/I

16-BitREAD

16-BitREADCOMMAND

16-BitResponse

16-BitREAD

FIGURE 2.Multiple Command Sequence.

Read CommandTemperature

Configuration RegisterLow Temp ThresholdHigh Temp Threshold

D151111

D140000

D130000

D120000

D110000

D100000

D90000

D80000

D70000

D60000

D50000

D40011

D30101

D20000

D10000

D00000

TABLE I. Read Command.

Write CommandConfiguration RegisterLow Temp ThresholdHigh Temp ThresholdShutdown Command

D150T12T12x

D140T11T11x

D130T10T10x

D120T9T9x

D11D1T8T8x

D10D0T7T7x

D9R1T6T6x

D8R0T5T5x

D7F1T4T41

D6F0T3T31

D5POLT2T21

D4TM1T1T11

D3TM0T0T01

D20111

D11011

D00001

TABLE II. Write Command.

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CS16-BitREAD16-BitWRITE/EmbeddedAddressCSSCKSO/ID15D14D13D12D11D10D9D8D7D6D5D4D31ZZSO/I...(Continued) ...CSSCKSO/IT12T11T10T9T8T7T6T5T4T3T2T1T010/1(1)0NOTE: (1) 0 indicates TLOW register, 1 indicates THIGH register.FIGURE 3. READ followed by WRITE COMMAND to TLOW/THIGH Register.

CS16-BitREAD16-BitWRITE/EmbeddedAddressCSSCKSO/ID15D14D13D12D11D10D9D8D7D6D5D4D31ZZSO/I...(Continued) ...CSSCKSO/I0000D1D0R1R0F1F0POLTM1TM0010FIGURE 4. READ followed by WRITE COMMAND to Configuration Register.

CSSO/I16-BitREAD16-BitREADCOMMAND16-BitResponseCSSCKSO/ID15D14D13D12D11D10D9D8D7D6D5D4D31ZZ......10000000000P1P0000(Continued) ......CSSCKSO/I(Continued) CSSCKSO/ID15D14D13D12D11D10D9D8D7D6D5D4D31ZZFIGURE 5. READ followed by READ COMMAND and Response.

CSSO/I16-BitREADCSSCKSO/ID15D14D13D12D11D10D9D8D7D6D5D4D31ZZFIGURE 6. Data READ.

6

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READ ADDRESS REGISTER

Figure 7 shows the internal register structure of theTMP122/TMP124. Table III describes the addresses of theregisters available. The READ address register uses the twobits to identify which of the data registers should respond toa read command. Following a complete 16-bit read, theREAD address register is reset to the default power-up stateof P1/P0 equal 0/0.

D15T12D7T4

D14T11D6T3

D13T10D5T2

D12T9D4T1

D11T8D3T0

D10T7D21

D9T6D1Z

D8T5D0Z

TABLE IV. Temperature Register.

TEMPERATURE

(°C)

150125250.06250–0.0625–25–55

DIGITAL OUTPUT(1)

(BINARY)0100 1011 0000 01110011 1110 1000 01110000 1100 1000 01110000 0000 0000 11110000 0000 0000 01111111 1111 1111 11111111 0011 1000 01111110 0100 1000 0111

HEX4B073E870C87000F0007FFFFF387E487

READ AddressRegisterTemperatureRegisterCSConfigurationRegisterSCKI/OControlInterfaceSO/INOTE: (1) The last 2 bits are high impedance and are shown as 11 in the table.

TABLE V. Temperature Data Format.

The user can obtain 9, 10, 11, or 12 bits of resolution byaddressing the Configuration Register and setting the reso-lution bits accordingly. For 9-, 10-, or 11-bit resolution, the mostsignificant bits in the Temperature Register are used with theunused LSBs set to zero.TLOWRegisterTHIGHRegisterCONFIGURATION REGISTER

FIGURE 7. Internal Register Structure of the TMP122 andTMP124.P10011P00101REGISTERTemperature Register (READ Only)Configuration Register (READ/WRITE)TLOW Register (READ/WRITE)THIGH Register (READ/WRITE)The Configuration Register is a 16-bit read/write registerused to store bits that control the operational modes of thetemperature sensor. Read/write operations are performedMSB first. The format of the Configuration Register for theTMP122/TMP124 is shown in Table VI, followed by a break-down of the register bits. The power-up/reset value of theConfiguration Register bits R1/R0 equal 1/1, all other bitsequal zero.

D150D7F1

D140D6F0

D130D5POL

D120D4TM1

D11D1D3TM0

D10D0D20

D9R1D11

D8R0D00

TABLE III. Pointer Addresses of the TMP122 and TMP124

Registers.

TEMPERATURE REGISTER

The Temperature Register of the TMP122/TMP124 is a 16-bit, signed read-only register that stores the output of themost recent conversion. The TMP122/TMP124 are speci-fied for the temperature range of –40°C to +125°C withoperation from –55°C to +150°C. Up to 16 bits can be readto obtain data and are described in Table IV. The first 13 bitsare used to indicate temperature where bit D2 is 1, and D1,D0 are in a high impedance state. Data format for tempera-ture is summarized in Table V. Following power-up or reset,the Temperature Register will read 0°C until the first conver-sion is complete.TABLE VI. Configuration Register.

SHUTDOWN MODE (SD)

The Shutdown Mode of the TMP122/TMP124 can be used toshut down all device circuitry except the serial interface.Shutdown mode occurs when the last 8 bits of the WRITEcommand are equal to 1, and will occur once the currentconversion is completed, reducing current consumption toless than 1µA. To take the part out of shutdown, send anycommand or pattern after the 16-bit read with the last 8 bitsnot equal to one. Power on default is in active mode.

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THERMOSTAT MODE (TM1/TM0)

The Thermostat Mode bits of the TMP122/TMP124 indicate tothe device whether to operate in Comparator Mode, InterruptMode or Interrupt Comparator Mode. For more information onComparator and Interrupt Mode, see text HIGH and LOW limitregisters. The bit assignments for thermostat mode aredescribed in Table VII. Power on default is comparator mode.

TM10011TM00101MODE OF OPERATIONComparator ModeInterrupt ModeInterrupt Comparator Mode—HIGH AND LOW LIMIT REGISTERS

In Comparator Mode (TM1/TM0 = 0/0), the ALERT Pin of theTMP122/TMP124 becomes active when the temperatureequals or exceeds the value in THIGH and generates aconsecutive number of faults according to fault bits F1 andF0. The ALERT pin will remain active until the temperaturefalls below the indicated TLOW value for the same number offaults.

In Interrupt Mode (TM1/TM0 = 0/1) the ALERT pin becomesactive when the temperature equals or exceeds THIGH for aconsecutive number of fault conditions. The ALERT pinremains active until a read operation of any register occurs.The ALERT pin will also be cleared if the device is placed inShutdown Mode. Once the ALERT pin is cleared, it will onlybecome active again by the temperature falling below TLOW.When the temperature falls below TLOW, the ALERT pinbecomes active and remains active until cleared by a readoperation of any register. Once the ALERT pin is cleared, theabove cycle will repeat with the ALERT pin becoming activewhen the temperature equals or exceeds THIGH.

In Interrupt/Comparator Mode (TM1/TM0 = 1/0), the ALERTPin of the TMP122/TMP124 becomes active when the tem-perature equals or exceeds the value in THIGH and generatesa consecutive number of faults according to fault bits F1 andF0. The ALERT pin will remain active until the temperaturefalls below the indicated TLOW value for the same number offaults and a communication with the device has occurredafter that point.

Operational modes are represented in Figure 8. Tables IXand X describe the format for the THIGH and TLOW registers.Power-up reset values for THIGH and TLOW are: THIGH = 80°Cand TLOW = 75°C. The format of the data for THIGH and TLOWis the same as for the Temperature Register.

All 13 bits for the Temperature, THIGH, and TLOW registers areused in the comparisons for the ALERT function for all con-verter resolutions. The three LSBs in THIGH and TLOW canaffect the ALERT output even if the converter is configured for9-bit resolution.D15H12

D14H11D6H3

D13H10D5H2

D12H9D4H1

D11H8D3H0

D10H7D21

D9H6D11

D8H5D00

TABLE VII. Mode Settings of the TMP122.POLARITY (POL)The Polarity Bit of the TMP122/TMP124 adjusts the polarityof the ALERT pin output. By default, POL = 0 and the ALERTpin will be active LOW, as shown in Figure 8. For POL = 1the ALERT Pin will be active HIGH, and the state of theALERT Pin is inverted.MeasuredTemperatureTHIGHTLOWTMP122/124 ALERT PIN(Comparator Mode)POL = 0TMP122/124 ALERT PIN(Interrupt Mode)POL = 0TMP122/124 ALERT PIN(Interrupt/Comparator Mode)POL = 0ReadReadTimeReadFIGURE 8. ALERT Output Transfer Function Diagrams.

FAULT QUEUE (F1/F0)

A fault condition occurs when the measured temperatureexceeds the limits set in the THIGH and TLOW registers. TheFault Queue is provided to prevent a false alert due toenvironmental noise and requires consecutive fault mea-surements to trigger the alert function of the TMP122/TMP124.Table VIII defines the number of consecutive faults requiredto trigger a consecutive alert condition. Power-on default forF1/F0 is 0/0.

F10011

F00101

CONSECUTIVE FAULTS

1246

D7H4

TABLE IX. THIGH Register.

D15L12D7L4

D14L11D6L3

D13L10D5L2

D12L9D4L1

D11L8D3L0

D10L7D21

D9L6D10

D8L5D00

TABLE X. TLOW Register.

TABLE VIII. Fault Settings of the TMP122 and TMP124.

8

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CONVERTER RESOLUTION (R1/R0)

The Converter Resolution Bits control the resolution of theinternal Analog-to-Digital (A/D) converter. This allows the userto maximize efficiency by programming for higher resolution orfaster conversion time. Table XI identifies the Resolution Bitsand the relationship between resolution and conversion time.The TMP122/TMP124 have a default resolution of 12 bits.CONVERSION TIME

(typical)

30ms60ms120ms240ms

0.25sD1/D0 = 0/10.25sD1/D0 = 1/00.25s8s1sD10011D00101CONVERSION TIME0.25s0.25s0.25s0.25sCONVERSION PERIOD0.25s0.5s1s8sTABLE XII. Conversion Delay for 12-Bit Resolution.R10011

R00101

RESOLUTION

9 Bits (0.5°C) plus sign10 Bits (0.25°C) plus sign11 Bits (0.125°C) plus sign12 Bits (0.0625°C) plus sign

0.5s50µA (active)20µA (idle)TABLE XI. Resolution of the TMP122 and TMP124.DELAY TIME

The Delay Bits control the amount of time delay between eachconversion. This feature allows the user to maximize powersavings by eliminating unnecessary conversions, and minimiz-ing current consumption. During active conversion the TMP122/TMP124 typically requires 50µA of current for approximately0.25s conversion time, and approximately 20µA for idle timesbetween conversions. Delay settings are identified in Table XIIas conversion time and period, and are shown in Figure 9.Default power up is D1/D0 equal 0/0. Conversion time andconversion periods scale with resolution. Conversion perioddenotes time between conversion starts.

PARAMETERSCK Period

Data In to Rising Edge SCK Setup TimeSCK Falling Edge to Output Data DelaySCK Rising Edge to Input Data Hold TimeCS to Rising Edge SCK Set-Up TimeCS to Output Data DelayCS Rising Edge to Output High Impedancet1t2t3t4t5t6t7

D1/D0 = 1/112-Bit ResolutionFIGURE 9. Conversion Time and Period Description.

Timing Diagrams

The TMP122/TMP124 are SPI compatible. Figures 10 to 12describe the various timing parameters of the TMP122/TMP124 with timing definitions in Table XIII.

MIN10020

MAXUNITSnsns

30

2040

3030

nsnsnsnsns

TABLE XIII. Timing Description.

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SCKt5CSt6SO/It1t3FIGURE 10. Output Data Timing Diagram.

SCKCSSO/ISCKCSSO/It7t7FIGURE 11. High Impedance Output Timing Diagram.

SCKt2t4CSSO/ISCKt2t4CSSO/IFIGURE 12. Input Data Timing Diagram.

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PACKAGEOPTIONADDENDUM

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9-Dec-2004

PACKAGINGINFORMATION

OrderableDeviceTMP122AIDBVRTMP122AIDBVTTMP124AIDTMP124AIDR

(1)

Status(1)ACTIVEACTIVEACTIVEACTIVE

PackageTypeSOT-23SOT-23SOICSOIC

PackageDrawingDBVDBVDD

PinsPackageEcoPlan(2)

Qty6688

30002501002500

NoneNonePb-Free(RoHS)Pb-Free(RoHS)

Lead/BallFinishCUNIPDAUCUNIPDAUCUNIPDAUCUNIPDAU

MSLPeakTemp(3)Level-1-235C-UNLIMLevel-1-235C-UNLIMLevel-2-260C-1YEAR/Level-1-220C-UNLIMLevel-2-260C-1YEAR/Level-1-220C-UNLIM

Themarketingstatusvaluesaredefinedasfollows:ACTIVE:Productdevicerecommendedfornewdesigns.

LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect.

NRND:Notrecommendedfornewdesigns.Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartinanewdesign.

PREVIEW:Devicehasbeenannouncedbutisnotinproduction.Samplesmayormaynotbeavailable.OBSOLETE:TIhasdiscontinuedtheproductionofthedevice.

(2)

EcoPlan-Maynotbecurrentlyavailable-pleasecheckhttp://www.ti.com/productcontentforthelatestavailabilityinformationandadditionalproductcontentdetails.

None:NotyetavailableLead(Pb-Free).

Pb-Free(RoHS):TI'sterms\"Lead-Free\"or\"Pb-Free\"meansemiconductorproductsthatarecompatiblewiththecurrentRoHSrequirementsforall6substances,includingtherequirementthatleadnotexceed0.1%byweightinhomogeneousmaterials.Wheredesignedtobesolderedathightemperatures,TIPb-Freeproductsaresuitableforuseinspecifiedlead-freeprocesses.

Green(RoHS&noSb/Br):TIdefines\"Green\"tomean\"Pb-Free\"andinaddition,usespackagematerialsthatdonotcontainhalogens,includingbromine(Br)orantimony(Sb)above0.1%oftotalproductweight.

(3)

MSL,PeakTemp.--TheMoistureSensitivityLevelratingaccordingtotheJEDECindustrystandardclassifications,andpeaksoldertemperature.

ImportantInformationandDisclaimer:TheinformationprovidedonthispagerepresentsTI'sknowledgeandbeliefasofthedatethatitisprovided.TIbasesitsknowledgeandbeliefoninformationprovidedbythirdparties,andmakesnorepresentationorwarrantyastotheaccuracyofsuchinformation.Effortsareunderwaytobetterintegrateinformationfromthirdparties.TIhastakenandcontinuestotakereasonablestepstoproviderepresentativeandaccurateinformationbutmaynothaveconducteddestructivetestingorchemicalanalysisonincomingmaterialsandchemicals.TIandTIsuppliersconsidercertaininformationtobeproprietary,andthusCASnumbersandotherlimitedinformationmaynotbeavailableforrelease.

InnoeventshallTI'sliabilityarisingoutofsuchinformationexceedthetotalpurchasepriceoftheTIpart(s)atissueinthisdocumentsoldbyTItoCustomeronanannualbasis.

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