Temperature Sensor with Daisy-Chain UART Interface with up to 16 Devices

Temperature Sensor with Daisy-Chain UART Interface with up to 16 Devices - TMP104

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The TMP104 is a digital output temperature sensor in a four-ball wafer chip-scale package (WCSP). The TMP104 is capable of reading temperatures to a resolution of 1°C.

The TMP104 features a SMAART wire interface that supports daisy-chain configurations. In addition, the interface supports multiple device access (MDA) commands that allow the master to communicate with multiple devices on the bus simultaneously, eliminating the need to send individual commands to each TMP104 on the bus.

Up to 16 TMP104s can be tied together in parallel and easily read by the host. The TMP104 is especially ideal for space-constrained, power-sensitive applications with multiple temperature measurement zones that must be monitored.

The TMP104 is specified for operation over a temperature range of –40°C to +125°C.


  • Multiple Device Access (MDA):
    • Global Read/Write Operations
  • SMAART Wire Interface
  • Resolution: 8 Bits
  • Accuracy: ±0.5°C Typ (–10°C to +100°C)
  • Low Quiescent Current:
    • 3 µA Active IQ at 0.25 Hz
    • 1 µA Shutdown
  • Supply Range: 1.4 V to 3.6 V
  • Digital Output
  • Package: 0.8-mm (±5%) × 1-mm (±5%) 4-Ball WCSP (DSBGA)

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Parametrics Compare all products in Local Digital Temperature Sensors

Local Sensor Accuracy (Max) (+/- C)
Temp Resolution (Max) (bits)
Operating Temperature Range (C)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Typ) (uA)
Supply Current (Max) (uA)
Package Group
Package Size: mm2:W x L (PKG)
Iq (Typ) (uA)
TMP104 LMT01 TMP107
UART    Pulse Count    UART   
2    0.5    0.4   
8    13    14   
-40 to 125    -50 to 150    -55 to 125   
1.4    2    1.7   
3.6    5.5    5.5   
1.5    34    16   
85    39    35   
Programmable Alert
Window Comparator
2 pin package
NIST Traceable   
NIST Traceable   
16      32   
DSBGA    TO-92
See datasheet (DSBGA)    2TO-92: 6 mm2: 1.52 x 4(TO-92)
See datasheet (WSON)   
8SOIC: 29 mm2: 6 x 4.9(SOIC)   
1.5    34    35   

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