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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
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Product Specifications (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 12 Oct 2020 |
12 Oct 2020
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User Manuals (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 10 Jun 2020 |
10 Jun 2020
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Application Notes for related Tools & Software (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 03 Jul 2020 |
03 Jul 2020
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Schematics (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| ZIP | 14 Nov 2019 |
14 Nov 2019
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Flyers (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 06 Feb 2019 |
06 Feb 2019
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Brochures (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 23 Mar 2020 |
23 Mar 2020
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CAD/EDA Symbols, Footprints and 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 |
(**) 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 | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| STKNX | 1 distributors | Free Sample Buy Direct |
Active
|
EAR99 | NEC | Tray | QFN-24L | - | - | PHILIPPINES | 2.0059 / 1k | |
| STKNXTR | 7 distributors | Free Sample Buy Direct |
Active
|
EAR99 | NEC | Tape And Reel | QFN-24L | - | - | PHILIPPINES | 2.0059 / 1k | |
(*) 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
