HTS221TR Active

Capacitive digital sensor for relative humidity and temperature
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius120.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack2
GradeIndustrial
Package NameHLGA-6L 2X2X0.9
Key Features
  • 0 to 100% relative humidity range
  • Supply voltage: 1.7 to 3.6 V
  • Low power consumption: 2 μA @ 1 Hz ODR
  • Selectable ODR from 1 Hz to 12.5 Hz
  • High rH sensitivity: 0.004% rH/LSB
  • Humidity accuracy: ± 3.5% rH, 20 to +80% rH
  • Temperature accuracy: ± 0.5 °C,15 to +40 °C
  • Embedded 16-bit ADC
  • 16-bit humidity and temperature output data
  • SPI and I²C interfaces
  • Factory calibrated
  • Tiny 2 x 2 x 0.9 mm package
  • ECOPACK® compliant

The HTS221 is an ultra-compact sensor for relative humidity and temperature. It includes a sensing element and a mixed signal ASIC to provide the measurement information through digital serial interfaces.


The sensing element consists of a polymer dielectric planar capacitor structure capable of detecting relative humidity variations and is manufactured using a dedicated ST process.


The HTS221 is available in a small top-holed cap land grid array (HLGA) package guaranteed to operate over a temperature range from -40 °C to +120 °C.

Out of stock
$3.40
Range Unit Price Savings
1 - 9$3.400%
10 - 99$2.8915%
100 - 249$2.5126%
250 - 499$2.3830%
500$2.1437%
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