List of electrical characteristics of single collision domain segment "slow speed" network buses: Name Multidrop Max nodes Electrical type Cable type Max bitrate [kbit/s]Length at max bitrateMax length [m]Bitrate at max length RS-485 Y 256 Differential Twisted pair SCSI-1/2 Y 8 Open collector Ribbon cable SCSI Ultra2 Y 16 Differential Ribbon cable with twisted pairs LIN Y 16 Open collectoropen collector with pull-up to 12V car supply SIOX Y 62 I²C Y 127 or 1023 Open collector SMBus Y 128 Open collector PMBus Y 128 Open collector 10BASE5 Y 100 Single ended RG-8X coaxial 10BASE2 Y 30 Single ended RG-58 coaxial CAN Y 128 ISO 11898-2 Differential Twisted pair 090114 ucpros.com DMX512-A N 32 Differential (RS-485) Twisted pair 090610 dmx512-online.com DCC Y 127 Single ended RS-232 N 2 Single ended (approx)15 m PSI5 Y Twisted pair (approx) 1-Wire Y 248 Open collector Single conductor, with ground X10 Y 256 Power line / FlexRay Twisted pair SENThttp://www.diva-portal.org/smash/get/diva2:1162587/FULLTEXT02 "Implementing and Analyzing SingleEdge Nibble Transmission (SENT)Protocol for Automotive Applications", Master thesis of Naseem Ullah, 2014N2Single ended Single conductor, with power supply and ground async. transmission, min. 39.216 kbits/s5 mSPCY5Single ended or Open collectorSingle conductor, with power supply and ground, shielded when using higher speedssync. and async. transmission, variable up to ~150 kbit/s~0.5 m5 msame as SENT I3C Y 127 Single ended or Open drain 12 500 kbits/s SPI Y Single ended variable up to ~10000 kbit/s

(depends strongly on physical setup)

The number of nodes can be limited by either number of available addresses or bus capacitance. None of the above use any analog domain modulation techniques like MLT-3 encoding, PAM-5 etc.

PSI5 designed with automation applications in mind is a bit unusual in that it uses Manchester code.

See also Multidrop bus Characteristic impedance Category 5 cable Telegrapher's equations Single-ended signaling Network segment CEBus KNX (EIB)

References

External links bipom.com - Micro interfacing.pdf