TMP421/TMP422/TMP423 Temperature Sensors

Texas Instruments TMP421/TMP422/TMP423 small high-performance remote temperature monitor with built-in local temperature sensors. The devices add programmable bus addressing to support multiple devices on the same I2C/SMBus.  The Texas Instruments TMP421/TMP422/TMP423 series features resistance cancellation, programmable non-ideality factor for improved system accuracy, and diode fault detection to ensure the remote sensor is in working condition and connected correctly. The devices have an onboard local temperature sensor and support three remote temperature sensors. The TMP422-EP devices have gold bond wires, a temperature range of –55 to +105°C, and include a SnPb lead finish.

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Description Datasheet Availability Pricing (THB) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Output Type
Accuracy
Minimum Operating Temperature
Maximum Operating Temperature
Package/Case
Interface Type
Supply Voltage - Min
Supply Voltage - Max
Configuration
Resolution
Shutdown
Mounting Style
Qualification
Packaging
Texas Instruments Board Mount Temperature Sensors AEC-Q100 Automotive 1Ch Remote Temperatu A 595-TMP421AQDCNTQ1
Datasheet
14,960In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Digital +/- 1 C - 40 C + 125 C SOT-23-8 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote 12 bit Shutdown SMD/SMT AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Board Mount Temperature Sensors Remote and Local Tem p Sensor
Datasheet
Product Comments
3,007In Stock
1,840Expected 8/13/2026
MouseReel Available
Min.: 1
Mult.: 1
: 250

Digital +/- 1 C - 55 C + 125 C SOT-23-8 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote 12 bit Shutdown SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Board Mount Temperature Sensors +/-1degC Remote & Lo cal Temp Sensor A 5 A 595-TMP421YZDT
Datasheet
3,813In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Digital +/- 1 C - 40 C + 125 C 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote 12 bit Shutdown SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Board Mount Temperature Sensors +/-1 degreeC Remote Local Temp Sensor A A 595-TMP422AIDCNT
Datasheet
8,901In Stock
9,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Digital +/- 1 C - 40 C + 125 C SOT-23-8 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote 12 bit Shutdown SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Board Mount Temperature Sensors +/-1C Remote and Loc al Temp Sensor A 59 A 595-TMP423AIDCNT
Datasheet
1,622In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Digital +/- 1 C - 40 C + 125 C SOT-23-8 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote 12 bit Shutdown SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Board Mount Temperature Sensors AEC-Q100 Automotive 2Ch Remote Temperatu A 595-TMP422AQDCNTQ1
Datasheet
935In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Digital +/- 1 C - 40 C + 125 C SOT-23-8 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote 12 bit Shutdown SMD/SMT AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Board Mount Temperature Sensors AEC-Q100 Automotive 3Ch Remote Temperatu A 595-TMP423AQDCNTQ1
Datasheet
1,096In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Digital +/- 1 C - 40 C + 125 C SOT-23-8 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote 12 bit Shutdown SMD/SMT AEC-Q100 Reel, Cut Tape, MouseReel
Texas Instruments Board Mount Temperature Sensors +/-1degC Rem and Tem p Sensor A 595-TMP4 A 595-TMP421AIDCNT
Datasheet
12,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Digital +/- 1 C - 40 C + 125 C SOT-23-8 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote 12 bit Shutdown SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Board Mount Temperature Sensors +/-1C Remote and Loc al Temp Sensor A 59 A 595-TMP423BIDCNT
Datasheet
2,766Expected 11/19/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Digital +/- 1 C - 40 C + 125 C SOT-23-8 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote 12 bit Shutdown SMD/SMT Reel, Cut Tape, MouseReel
Texas Instruments Board Mount Temperature Sensors Remote and Local Tem p Sensor A 595-TMP4 A 595-TMP422AMDCNTEP
Datasheet
Product Comments
Non-Stocked Lead-Time 26 Weeks
Min.: 250
Mult.: 250
: 250

Digital +/- 1 C - 55 C + 125 C SOT-23-8 2-Wire, I2C, SMBus 2.7 V 5.5 V Local, Remote Shutdown SMD/SMT Reel