Capacitive digital sensor for relative humidity and temperature

Download datasheet

Order a free sample and buy from our distributors

Sample & Buy
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • 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.

    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

Sample & Buy

Part Number
Marketing Status
Quantity
Budgetary Price (US$)*
Package
Packing Type
Temperature (°C) ECCN (US)
More info
Order from Distributors
Order from ST
min
max
HTS221TR
Active
1000 1.4 HLGA-6L 2X2X0.9 Tape And Reel -40 120 EAR99
MORE INFO

Country of Origin:

-

Check Availability

Distributor availability ofHTS221TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 8286 2 Order Now
AVNET AMERICA 14676 0 Order Now
FUTURE WORLDWIDE 226 1 Order Now
ARROW AMERICA 16000 8000 Order Now
MOUSER WORLDWIDE 29852 1 Order Now
Farnell Element14 EUROPE 16959 1 Order Now
ANGLIA Live EUROPE 2 1 Order Now

Distributor reported inventory date: 2019-07-19

Distributor Name

RS COMPONENTS

Stock

8286

Min.Order

2

Region

EUROPE Order Now

AVNET

Stock

14676

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

226

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

16000

Min.Order

8000

Region

AMERICA Order Now

MOUSER

Stock

29852

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

16959

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-19

Get sample

HTS221TR

Marketing Status

Active

Quantity

1000

Unit Price (US$)

1.4*

Distributor availability ofHTS221TR

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 8286 2 Order Now
AVNET AMERICA 14676 0 Order Now
FUTURE WORLDWIDE 226 1 Order Now
ARROW AMERICA 16000 8000 Order Now
MOUSER WORLDWIDE 29852 1 Order Now
Farnell Element14 EUROPE 16959 1 Order Now
ANGLIA Live EUROPE 2 1 Order Now

Distributor reported inventory date: 2019-07-19

Distributor Name

RS COMPONENTS

Stock

8286

Min.Order

2

Region

EUROPE Order Now

AVNET

Stock

14676

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

226

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

16000

Min.Order

8000

Region

AMERICA Order Now

MOUSER

Stock

29852

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

16959

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

2

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-19

Unit Price (US$)

1.4

Package

HLGA-6L 2X2X0.9

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-40

(max)

120

ECCN (US)

EAR99

Country of Origin

-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Recommended for you

Related Applications

Data Center

Energy Generation and Distribution

Factory Automation

Home and Professional Appliances

Home, Building and City Automation

Industrial Power and Tools

LED Lighting and Controls

Medical and Healthcare

Metering

Body and Convenience

Ecosystems

    • Part Number

      AWS IoT Core is a managed cloud service that lets connected devices easily and securely interact with cloud applications and other devices

      Microsoft Azure is an ever-expanding set of cloud services to help your organization meet your business challenges. It's the freedom to build, manage, and deploy applications on a massive, global network using your favorite tools and frameworks.

      IBM Watson IoT Platform is a managed, cloud-hosted service designed to make it simple to derive value from your Internet of Things devices.

    • Part Number

      Ready-to-use BLE System-on-Module packed with sensors, low power ARM® 32-bit Cortex®-M4 CPU and coin battery. Speed up IoT product development today!

      Connecting low-power SUB 1GHZ RF transceiver to the Cloud with fully customisable sensors, ARM® 32-bit Cortex®-M4 CPU and coin battery.

      Temp&Hum click carries ST's HTS221 temperature and relative humidity sensor. Its temperature measurement accuracy is ±1°C within a 0-60°C range.

    • Part Number

      Motion MEMS and environmental sensor expansion board for STM32 Nucleo

      Motion MEMS and environmental sensor expansion board for STM32 Nucleo

      Motion MEMS and environmental sensor expansion board for STM32 Nucleo

Embedded Software

    • Part Number

      Sensor and DSP algorithm software expansion for STM32Cube

      Sensor and motion algorithm software expansion for STM32Cube

    • Part Number

      Android sensor HAL for MEMS motion and environmental sensors (Industrial I/O framework)

      Android sensor HAL for MEMS motion and environmental sensors (Input framework)

      Standard C platform-independent drivers for MEMS motion and environmental sensors

      Linux device drivers for MEMS motion and environmental sensors (Industrial I/O framework)

      Linux device drivers for MEMS motion and environmental sensors (Input framework)

Evaluation Tools

Support and Applications

    • Part Number

      End-to-end development services: Hardware, Firmware, Software development, Enclosure, Cloud and mobile APPs. Speed up your IoT project with SensiEDGE!

      Engineering services on theSensorTile.box surch as Plastic housing, HW and SW/App customizations and boards Manufacturing.

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS10329
      Capacitive digital sensor for relative humidity and temperature
      4.0
      741.71 KB
      PDF
      DS10329

      Capacitive digital sensor for relative humidity and temperature

    • Description Version Size Action
      AN4503
      Environmental sensors: Hardware abstraction layer for Android
      3.0
      241.61 KB
      PDF
      AN4722
      HTS221 digital humidity sensor: hardware guidelines for system integration
      1.0
      844.49 KB
      PDF
      AN4503

      Environmental sensors: Hardware abstraction layer for Android

      AN4722

      HTS221 digital humidity sensor: hardware guidelines for system integration

    • Description Version Size Action
      TN1219
      HTS221 digital humidity sensor: reference design implementation
      2.0
      367.08 KB
      PDF
      TN1218
      Interpreting humidity and temperature readings in the HTS221 digital humidity sensor
      4.0
      3.67 MB
      PDF
      TN1198
      Surface mount guidelines for MEMS sensors in HLGA packages
      1.0
      128.17 KB
      PDF
      TN1219

      HTS221 digital humidity sensor: reference design implementation

      TN1218

      Interpreting humidity and temperature readings in the HTS221 digital humidity sensor

      TN1198

      Surface mount guidelines for MEMS sensors in HLGA packages

    • Description Version Size Action
      AN4503
      Environmental sensors: Hardware abstraction layer for Android
      3.0
      241.61 KB
      PDF
      AN5353
      How to use a sensor on a DIL 24 socket in X-CUBE-MEMS1 package applications
      1.0
      981.19 KB
      PDF
      AN4503

      Environmental sensors: Hardware abstraction layer for Android

      AN5353

      How to use a sensor on a DIL 24 socket in X-CUBE-MEMS1 package applications

Publications and Collaterals

    • Description Version Size Action
      MEMS and Sensors Smart Motion tracking, IoT and enhanced user experience 1.0
      1.91 MB
      PDF

      MEMS and Sensors Smart Motion tracking, IoT and enhanced user experience

Part Number Marketing Status Package RoHS Compliance Grade Material Declaration**
HTS221TR
Active
HLGA-6L 2X2X0.9 Ecopack2

HTS221TR

Package:

HLGA-6L 2X2X0.9

Material Declaration**:

Marketing Status

Active

Package

HLGA-6L 2X2X0.9

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.