PC/104+ 2 or 4-port isolated CAN with 16 Digital I/O

  • Description
  • Specifications
  • Ordering Guide
  • Optional Accessories

The JNMM-4LP-XT family of I/O modules offers two or four opto-isolated CANbus 2.0B ports plus 16 digital I/O lines. Models are available in both the PC/104-Plus and PC/104 form factors. An FGPA core houses the CAN controller logic and digital I/O logic providing data rates up to 1Mbps. Each CAN port supports standard and extended frames as well as expanded TX and RX message queues for enhanced performance. Each port has its own combination isolator and transceiver chip.

JNMM-4LP-XT fits a wide variety of rugged and on-vehicle embedded serial I/O application needs. It was designed with harsh applications in mind including latching connectors to further improve reliability. Extended temperature operation of -40°C to +85°C is tested and guaranteed. The module is compatible with MIL-STD-202G shock and vibration specifications.

Janus-MM-4LP-XT comes with a basic CAN driver for both Windows Embedded 7 and Linux Ubuntu 12.04 LTS operating systems. Both drivers support dual-independent and dual-redundant modes.

Windows Embedded 7 and Linux APIs and monitor programs are also included. The monitor program shown below allows users to set, manage and observe all of the functions and traffic on the CAN ports and digital I/O lines.

Number of CAN ports 2 or 4 CANbus 2.0B
Data rates Up to 1Mbps
Controller FPGA based
Transceiver ADM3053 isolation + transceiver
Isolation 500V port-to-port and port-to-host
Frames Standard 11-bit identifier
Extended 29-bit identifier
Message queues Expanded TX and RX message queues
16 8-byte transmit message queues
31 8-byte receive message queues
Receive filters 16
Termination Jumper selectable biased split termination
Number of Digital I/Os 16 programmable DIO lines arranged in 2 8-bit ports
Logic levels 3.3V or 5V, jumper selectable
Pull-up/pull-down Jumper selectable
Direction control Software programmable
Host interface PCI or ISA, self selecting
Connectors Latching connectors for increased ruggedness
Input power +5VDC ±5%
Power consumption tbd W at 5VDC
Operating System support Windows Embedded Standard 7
Linux Ubuntu 12.04LTS
Operating temperature -40ºC to +85°C
Operating humidity 5% to 95% non-condensing
Shock MIL-STD-202G compatible
Vibraion MIL-STD-202G compatible
MTBF tbd hours at 20°C
Form Factor 90 x 96 mm
Weight 2.5oz (71g)


Model Description
JNMM-4LP-XT PC/104+ Quad isolated CAN with 16 Digital I/O
JNMM-4L-XT PC/104 Quad isolated CAN with 16 Digital I/O
JNMM-2LP-XT PC/104+ Dual isolated CAN with 16 Digital I/O
JNMM-2L-XT PC/104 Dual isolated CAN with 16 Digital I/O


Model Description
6981164 IDC20FxIDC20F, 2mm, 12″ Digital I/O cable
6981182 CANbus 2.0 cable