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TMP421 Status: ACTIVE

+/-1degC Remote and Local TEMPERATURE SENSOR in SOT23-8


      
         
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Datasheet

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Functional Block Diagram


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 TMP421TMP422 TMP423 
InterfaceI2C, SMBus  I2C, SMBus  I2C, SMBus  
Accuracy Over Temp Range(Max)(C)+/- 1  +/- 1  +/- 1  
Temp Resolution(Max)(bits)12  12  12  
Temp Range(Min)(C)-40  -40  -40  
Temp Range(Max)(C)125  125  125  
Supply Voltage(Min)(V)2.7  2.7  2.7  
Supply Voltage(Max)(V)5.5  5.5  5.5  
Iq(Typ)(uA)400  400  400  
Operating Temp Range(Celsius)-40 to 125  -40 to 125  -40 to 125  
Pin/Package8SOT-23  8SOT-23  8SOT-23  
RatingCatalog  Catalog  Catalog  
 SamplesSamplesSamples
 InventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TMP423: +/-1°C Remote and Local Temperature Sensor in SOT23-8
  • TMP100: Digital Temperature Sensor with I2C Serial Interface
  • TMP101: Digital Temperature Sensor with I2C Serial Interface, Prog. Thermostat/Alarm Function
  • AMC6821: Temperature Monitoring and Fan Control
  • TPS63000: 96% Buck-Boost Converter with 1.8A Current Switches in 3x3 QFN
  • TPS51200: Sink/Source DDR Termination Regulator

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Product Information

Features

  • SOT23-8 PACKAGE
  • ±1°C REMOTE DIODE SENSOR (MAX)
  • ±1.5°C LOCAL TEMPERATURE SENSOR (MAX)
  • SERIES RESISTANCE CANCELLATION
  • n-FACTOR CORRECTION
  • TWO-WIRE/SMBus™ SERIAL INTERFACE
  • MULTIPLE INTERFACE ADDRESSES
  • DIODE FAULT DETECTION
  • RoHS COMPLIANT AND NO Sb/Br
  • APPLICATIONS
    • PROCESSOR/FPGATEMPERATURE MONITORING
    • LCD/DLP®/LCOS PROJECTORS
    • SERVERS
    • CENTRAL OFFICE TELECOM EQUIPMENT
    • STORAGE AREA NETWORKS (SAN)

DLP is a registered trademark of Texas Instruments.
SMBus is a trademark of Intel Corporation.
All other trademarks are the property of their respective owners.

Description

The TMP421, TMP422, and TMP423 are remote temperature sensor monitors with a built-in local temperature sensor. The remote temperature sensor diode-connected transistors are typically low-cost, NPN- or PNP-type transistors or diodes that are an integral part of microcontrollers, microprocessors, or FPGAs.

Remote accuracy is ±1°C for multiple IC manufacturers, with no calibration needed. The two-wire serial interface accepts SMBus write byte, read byte, send byte, and receive byte commands to configure the device.

The TMP421, TMP422, and TMP423 include series resistance cancellation, porgrammable non-ideality factor, wide remote temperature measurment range (up to +150°C), and diode fault detection.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
TMP421AIDCNRACTIVE-40 to 1250.95 | 1kuSOT-23 (DCN) | 8 View 3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
TMP421AIDCNRG4ACTIVE-40 to 1250.95 | 1kuSOT-23 (DCN) | 8 View 3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
TMP421AIDCNTACTIVE-40 to 1251.05 | 1kuSOT-23 (DCN) | 8 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
TMP421AIDCNTG4ACTIVE-40 to 1251.05 | 1kuSOT-23 (DCN) | 8 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this Footprint

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 10:03 AM GMT, 09 Feb 2010
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksTMP421AIDCNR
AmericasArrow >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTMP421AIDCNRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTMP421AIDCNT
AmericasArrow 500
Newark 315
AsiaFarnell Asia 178
WPI 24
EuropeFarnell 178
WorldwideDigiKey 750
TI Lead Time*: 20 WeeksTMP421AIDCNTG4
WorldwideDigiKey  Available
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
TMP421AIDCNR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TMP421AIDCNRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TMP421AIDCNT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TMP421AIDCNTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for TMP421 Help

Datasheet

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TMP101 Digital Temperature Sensor with I2C Serial Interface, Prog. Thermostat/Alarm Function TEMPERATURE SENSORS AND CONTROL ICs-TEMPERATURE SENSOR TI customers also evaluated this product.
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