The FlexMAX 3U is a high performance, modular multi-protocol intelligent platform that offers support for large quantities of various I/O types. Powered by Linux Real Time, the FlexMAX 3U is designed to receive and transmit data across dozens or hundreds of channels with a high time and sync precision, bridge data from receive to transmit channels, detect or inject errors and comes with data filtering and triggering capabilities.

The FlexMAX 3U chassis can host up to 16 FlexMAX modules. The modules are leveraged by powerful embedded resources. A FlexMAX 3U is capable of supporting up to 1024 Discrete I/Os, 512 ARINC 429 channels, 1024 Analog channels (ADC or DAC), 64 dual-redundant MIL-STD-1553 buses or ARINC 708 I/Os (Weather Radar), 512 ASYNC RS-232/422/485 and HDLC/SDLC or a mix of all of them.

Multiple FlexMAX can be used while keeping all databus time-correlated thanks to the device to device synchronization mechanism. The FlexMAX also supports IRIG-B I/O synchronization.

The FlexMAX 3U features military grade LEMO connectors for Discrete power supply. The device is capable of detecting over voltage or under voltage inputs when the user’s power supply to the Discrete outputs is not unexpectedly high or low. Status LEDs and API retrievable statuses will alert the users and the FlexMAX will protect itself from over voltages.

Rack mount brackets can be removed for tabletop operation, or mounted onto the unit for rack mount use. Rack mount brackets can be mounted on either side of the FlexMAX, allowing users to decide where they prefer to have the I/O connectors. System LEDs are available on both sides of the units.


Bus type

  • Ethernet, RJ-45 connector, 10/100/1000 Mbps

Number of FlexMAX modules supported

  • 16 modules


  • SYNC IN/OUT: Synchronization between multiple Flex devices
  • IRIG-B IN/OUT, Analog and TTL

Physical dimensions and weight

  • Height: 3U or 133 mm or 5.24 in
  • Width: 442 mm or 17.40 in
  • Depth: 367 mm or 14.45 in
  • Weight: 5 kg or 11 lbs

External connector type

  • SYNC and IRIG-B I/O: female DB-9
  • Discrete output power supply: LEMO ERA.2S.302.CLL
  • Ethernet: RJ-45


  • Standard Operating Temperature: 10°C to 35°C
  • Storage Temperature: -25°C to 45°
  • Relative Humidity for operation: 0 to 90% (non-condensing)


  • Line voltage: 100-240V AC
  • Frequency: 50Hz to 60Hz

Power consumption

  • Idle power: 40 W
  • Power consumption max: 250 W


  • Multi protocol support ARINC 429, Discrete I/Os, Analog to Digital, Digital to Analog, MIL-STD-1553,  ARINC 708, ASYNC RS-232/422/485, HDLC/SDLC and more to come.
  • Runs multiple protocols and I/O simultaneously
  • Powered by a 1 GHz ARM CPU and FPGA
  • Holds up to 16 MAX Technologies FlexMAX modules distributed across 4 stacks
  • DDR-4 memory for high performance data transfer
  • 64-bit sub-microsecond precision time-tags
  • Provides accurate time synchronization between protocols and I/O
  • Embedded message scheduling, buffering, filtering, and monitoring off-load the host computer
  • High channel I/O density
  • Remote access using 10/100/1000 Mbps Ethernet.
  • Versatile design: slick face with status LEDs only and I/Os face on opposite side, can be mounted on a 19-in rack with either side facing out.


FMX-0002-3U  FlexMAX instrument with GB Ethernet host connectivity. 3U and 16 module slots.

MAX Technologies Inc.

2051 Victoria Avenue

Saint-Lambert, Québec

J4S 1H1


Call: +1-450-443-3332

Toll-free from France: +33.800.915.497

MAX Technologies Europe

9 rue Ritay

31000 Toulouse


Call: +

Toll-free from USA: +1-844-695-1242

MAX Technologies USA Corp.

6750 N. Andrews Avenue

Fort Lauderdale, FL 33309


Call: +1-727-287-9255

© MAX Technologies