Miniature KNX transceiver with voltage regulators

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  • The STKNX is a transceiver device for KNX TP communication. The small package and few external components enable the very compact KNX nodes design.

    The simple interface to the μC allows easy replacement of physical layer discrete components implementations.
    The STKNX device features two integrated voltage regulators for external use in the application: the selectable 3.3 V / 5 V - 20 mA linear regulator and the adjustable 1 V to 12 V - 150 mA high-efficiency DC/DC step down switching converter.
    The integrated KNX bus power extractor supports bus current up to 30 mA to power external devices and the STKNX transceiver's own power needs, while limiting the bus current slew rate according to KNX specifications.
    The STKNX assures the safe coupling to the bus and provides the bus monitoring warning for the loss of bus power.

    Key Features

    • Very thin fine pitch 4 x 4 mm VQFNPN24 package
    • KNX certified, KNX TP1-256 supported
    • Easy interface to μC
    • Very small system solution
    • Two integrated voltage regulators for external use in application
      • Selectable 3.3 V / 5 V - 20 mA linear regulator
      • Adjustable 1 V to 12 V - 150 mA high- efficiency DC/DC step down switching converter
    • KNX bus power extractor supporting bus current up to 30 mA
    • Adjustable KNX bus current slew rate dI/dt
    • No crystal required
    • Operating temperature range -40 °C to +85 °C

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
ECCN (US)
Country of Origin
Budgetary Price (US$)*/Qty
Order from ST
Order from Distributors
STKNX QFN-24L Tray
Active
EAR99 PHILIPPINES 2.0059 / 1k Get sample Check Availability

Distributor availability ofSTKNX

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2802 1 Order Now

Distributor reported inventory date: 2020-05-29

Distributor Name

MOUSER

Stock

2802

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-05-29

STKNXTR QFN-24L Tape And Reel
Active
EAR99 PHILIPPINES 2.0059 / 1k Get sample Check Availability

Distributor availability ofSTKNXTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 461 1 Order Now
RS COMPONENTS EUROPE 88 1 Order Now
AVNET AMERICA 1000 0 Order Now
Newark Element14 AMERICA 414 0 Order Now
MOUSER WORLDWIDE 390 1 Order Now
Farnell Element14 EUROPE 3228 1 Order Now

Distributor reported inventory date: 2020-05-29

Distributor Name

DIGIKEY

Stock

461

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

88

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

414

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

390

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3228

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-05-29

STKNX

Package

QFN-24L

Packing Type

Tray

Budgetary Price (US$)*/Qty

2.0059 / 1k

Distributor availability ofSTKNX

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2802 1 Order Now

Distributor reported inventory date: 2020-05-29

Distributor Name

MOUSER

Stock

2802

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-05-29

Marketing Status

Active

Budgetary Price (US$)* / Qty

2.0059 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

STKNXTR

Package

QFN-24L

Packing Type

Tape And Reel

Budgetary Price (US$)*/Qty

2.0059 / 1k

Distributor availability ofSTKNXTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 461 1 Order Now
RS COMPONENTS EUROPE 88 1 Order Now
AVNET AMERICA 1000 0 Order Now
Newark Element14 AMERICA 414 0 Order Now
MOUSER WORLDWIDE 390 1 Order Now
Farnell Element14 EUROPE 3228 1 Order Now

Distributor reported inventory date: 2020-05-29

Distributor Name

DIGIKEY

Stock

461

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

88

Min.Order

1

Region

EUROPE Order Now

AVNET

Stock

1000

Min.Order

0

Region

AMERICA Order Now

Newark Element14

Stock

414

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

390

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

3228

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-05-29

Marketing Status

Active

Budgetary Price (US$)* / Qty

2.0059 / 1k

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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

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Evaluation Tools

    • Part Number

      Miniature transceiver STKNX evaluation and development kit

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS12399
      Miniature KNX transceiver with voltage regulators and microcontroller support
      1.0
      970.98 KB
      PDF
      DS12399

      Miniature KNX transceiver with voltage regulators and microcontroller support

    • Description Version Size Action
      UM2409
      Quick start guide STKNX evaluation board (EVALKITSTKNX)
      1.2
      2.73 MB
      PDF
      UM2409

      Quick start guide STKNX evaluation board (EVALKITSTKNX)

    • Description Version Size Action
      AN5274
      EVALKITSTKNX user guide and performances report
      2.0
      12.79 MB
      PDF
      AN5274

      EVALKITSTKNX user guide and performances report

Hardware Resources

    • Description Version Size Action
      STKNX Reference Design 1.0
      815.89 KB
      ZIP

      STKNX Reference Design

Publications and Collaterals

    • Description Version Size Action
      Tiny, efficient KNX bit transceiver for home and building control 1.0
      1.92 MB
      PDF

      Tiny, efficient KNX bit transceiver for home and building control

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF

      Electric vehicle (EV) ecosystem

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STKNX
Active
QFN-24L Industrial Ecopack2
STKNXTR
Active
QFN-24L Industrial Ecopack2

STKNX

Package:

QFN-24L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

QFN-24L

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STKNXTR

Package:

QFN-24L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

QFN-24L

Grade

Industrial

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.