Miniature KNX transceiver with voltage regulators

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Product overview

Description

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

The simple interface to the microcontroller allows easy replacement of physical layer discrete component 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 ensures safe coupling to the bus and provides the bus monitoring warning for the loss of bus power.

  • All features

    • Very thin fine pitch 4 x 4 mm VQFNPN24 package
    • KNX certified, KNX TP1-256 supported
    • Easy interface to microcontroller
    • 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

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    • Part number
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      EVALKITSTKNX

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      Description:

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EDA Symbols, Footprints and 3D Models

STMicroelectronics - STKNX

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Please select one model supplier :

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

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.

Sample & Buy

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Part Number
Marketing Status
Budgetary Price (US$)*/Qty
Order from ST
Order from distributors
Package
Packing Type
RoHS
Country of Origin
ECCN (US)
ECCN (EU)
STKNX
Active
2.6697 / 1k
Available at 4 distributors

Distributor availability of STKNX

Distributor Name
Region Stock Min. Order Third party link
ANGLIA Live EUROPE 2450 1
MOUSER WORLDWIDE 5036 1
FUTURE WORLDWIDE 200 1
DIGIKEY WORLDWIDE 2713 1

Distributor reported inventory date: 3/29/2025

QFN-24L Tray CHINA EAR99 NEC
STKNXTR
Active
2.6697 / 1k
Available at 4 distributors

Distributor availability of STKNXTR

Distributor Name
Region Stock Min. Order Third party link
Farnell Element14 EUROPE 2646 1
MOUSER WORLDWIDE 8287 1
DIGIKEY WORLDWIDE 9467 1
Newark Element14 AMERICA 660 0

Distributor reported inventory date: 3/29/2025

QFN-24L Tape and Reel CHINA EAR99 NEC

STKNX Active

Budgetary Price (US$)*/Qty:
2.6697 / 1k
Package:
QFN-24L
Packing Type:
Tray
RoHS:
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC

Part Number:

STKNX

Distributor Name

ANGLIA Live

Stock

2450

Min.Order

1

MOUSER

Stock

5036

Min.Order

1

Region

WORLDWIDE Buy from Distributor

FUTURE

Stock

200

Min.Order

1

Region

WORLDWIDE Buy from Distributor

DIGIKEY

Stock

2713

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 3/29/2025

STKNXTR Active

Budgetary Price (US$)*/Qty:
2.6697 / 1k
Package:
QFN-24L
Packing Type:
Tape and Reel
RoHS:
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC

Part Number:

STKNXTR

Distributor Name

Farnell Element14

Stock

2646

Min.Order

1

MOUSER

Stock

8287

Min.Order

1

Region

WORLDWIDE Buy from Distributor

DIGIKEY

Stock

9467

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Newark Element14

Stock

660

Min.Order

0

Region

AMERICA Buy from Distributor

Distributor reported inventory date: 3/29/2025

Swipe or click the button to explore more details Don't show this again

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