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.
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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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EDA Symbols, Footprints and 3D Models
STMicroelectronics - STKNX
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All resources
| Resource title | Version | Latest update |
|---|
Schematic Pack (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 14 Nov 2019 | 14 Nov 2019 |
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 |
(**) 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
| 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) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STKNX | | | distributors No availability of distributors reported, please contact our sales office | ||||||||||
| STKNXTR | | | distributors No availability of distributors reported, please contact our sales office |
STKNX Active
STKNXTR Active
(*) 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