List of network buses

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	Max length [m] / bitrate
		0			0	0
EIA-485 (UART based)	Y	256	EIA-485	Twisted pair	1000 kbit/s	1330 m / 64 kbit/s
SCSI-1/2	Y	8	Open collector	Ribbon cable	20 000 kbit/s / 3 m	6 m / 5 Mbit/s/ch
SCSI Ultra2	Y	16	EIA-485	Twisted pair	40 000 kbit/s / 12 m
LIN	Y	16	Single ended		19.2 kbit/s / 40 m
SIOX	Y	62			19.2 kbit/s
I²C	Y	127 or 1023	Open collector		5000 kbit/s	7.6 m
SMB	Y	128	Open collector		100 kbit/s
PMBus	Y	128	Open collector		400 kbit/s
10Base-2	Y	30	Differential	RG58 Coax	10 000 kbit/s / 185 m	185 m
CAN	Y	128	EIA-485	Twisted pair	1000 kbit/s / 40 m	1000 m / 40 kbit/s
DMX512-A	Y	512	EIA-485	Twisted pair 120 Ω	250 kbit/s / 100 m	150 m / 250 kbit/s
DCC	Y	127	Single ended		5 kbit/s
RS-232	N	2	Single ended		128 kbit/s / ~1.5 m	15 m / 19.6 kbit/s
PSI5	Y			Twisted pair	189 kbit/s	12 m (approx)
1-Wire	Y	248	Open collector	Single conductor, with ground	16.3 kbit/s	300 m
X10	Y	256		Power line	0.05 kbit/s / 0.06 kbit/s
FlexRay				Twisted pair	20 000 kbit/s
SENT			Single ended	Single conductor, with 5 V power supply and ground	333.3 kbit/s
ZZ	ZZ	9999999	ZZ	ZZ	9999999	9999999

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

• Characteristic impedance
• Category 5 cable
• Telegrapher's equations
• Single ended
• Network segment
• CEBus
• KNX (standard) (EIB)

External links

• bipom.com - Micro interfacing.pdf