Key Features

  • Low-cost embedded control networking chip for use inside machines and for extending control networks to high-performance sensor networks
  • Miniaturized form factor fits into almost every sensor and actuator
  • Extensible architecture for seamless integration with LonWorks® control networks and the Internet
  • Self-organizing feature configures the network without special tools or skilled labor
  • High speed deterministic operation (≤ 25ms response time)
  • 312.5kbps network transmission speed
  • Polarity insensitive, free topology, twisted pair wiring
  • Link Power allows sending communication and power over same pair of wires
  • Robust performance ideal for industrial and consumer products and applications including automotive, buildings, office machines, and transportation
  • Exceptional data integrity with Forward Error Correction and 18 bit packet CRC
  • Exceptionally high common mode noise and interference immunity
  • Network pins ESD protection to over 8kV HBM
  • -40°C to +85°C operating temperature range
  • 20 Pin QFN 5mm x 5mm package
  • RoHS-compliant

Tech Specs

Network Connections



Deterministic TDMA protocol with automatic retries on CRC error

Response Time (Reading and Writing ≤25ms scan time for up to 32 Points. Scan time is proportionally faster two 4-byte values in each scan)

with less Pyxos Points, e.g., 1.8ms for two Pyxos Points in the system

Data Integrity Forward error correction of up to 2 bit errors per packet; 18 bit packet CRC



Self-organizing network with automatic, hardwired, and manual service- pin methods

Maximum Pyxos Points per Pyxos Pilot


Transmission Speed

312.5 kilobits per second, fixed polling cycle

Pyxos Network Variables(PNVs) 128 four-byte PNVs per Pyxos Point

Larger size PNVs can be definedper hosted Pyxos Point within total memory size available

LonWorks Network Variables per Pyxos Pilot

62 when using ShortStack, 4096 when using MIP

Network Wiring

Unshielded CAT-5 24AWG (0.5mm) and Belden 8471 16AWG (1.3mm) twisted pair wire; see Junction Box and Wiring Guidelines application note for cable details

Network Length in Free Topology

Free Topology (Single termination) :100m (328 feet) maximum total wire Bus Topology (Double termination): 400m (1312 feet) maximum; 0.3m (1 foot) maximum stub lengths

Link Power

Supports 24VAC or 24VDC link power with optional external components; Reference designs provided for both switching and linear power supplies Application Output Current: up to 100mA @ 3.3V DC


Designed to comply with FCC Part 15 Level A and EN55022 Level A


Designed to comply with 61000-4-2 Level 4 (contact - 8kV; air - 15kV)

ESD Human Body Model (MIL-STD-883) 8kV(for pins NET_A and NET_B)


Radiated Electromagnetic Susceptibility

Designed to comply with 61000-4-3 Level 3 (10Vrms)

Fast Transient/Burst Immunity

Designed to comply with 61000-4-4 Level 4 (2kV)

Surge Immunity

Designed to comply with 61000-4-5 Level 3 (2kV)

Conducted RF Immunity

Designed to comply with 61000-4-6 Level 3 (10Vrms)

Common Mode Range (0 – 60Hz)

 277Vrms with Transformer-isolated coupling +/-40V with Non-isolated/Grounded coupling


4 digital I/Os and 1 digital input without a microcontroller, 8mA drive, 5V tolerant for LEDs, digital I/O, and transistors 

Pyxos Host Microcontroller Interface

SPI (Serial Peripheral Interface) Package  20 Pin QFN 5mm x 5mm package


20 Pin QFN 5mm x 5mm package

Operating Voltage

3.3V ±10%

Operating Temperature

-40ºC to +85ºC

Pyxos FT Network Chip Datasheet



IzoT Hands-on Lab

The shortest path from your ideas to real IIoT products.

Start Developing

IIoT Requirements

Learn how the IzoT Platform addresses requirements for Industrial IoT.

Download Whitepaper