|
Cable and Back Plane Bus Standards
|
|
Bus
|
Data Rate
|
Type
|
Description
|
Topology
|
Voltage
|
Coax
|
Twisted Pair
|
|
RS-170
|
Video
|
Unbalanced
|
Video, 75 Ohm
|
Point-to-Point
|
~ 1V
|
75 Ohm
|
-------
|
|
RS-232
|
19.2 Kbps
|
Unbalanced
|
20 meters, Single Ended
|
Point-to-Point
|
~ 5V
|
15 or 25 pin cable
|
|
RS-422
|
100 Kbps
|
Balanced
|
1200 meters, Differential, 100 Ohms
|
Multi-Receivers
|
+/-7V
|
------
|
See RS449 / 530
|
|
RS-423
|
100 Kbps
|
Hybrid
|
200 meters, Unbal Tx Bal Rx
|
Multi-Receivers
|
+3.6V
|
------
|
See RS449 / 530
|
|
RS-485
|
100 Kbps
|
Balanced
|
1200 meters, Differential
|
Multi-Point
|
+5V
|
------
|
STP or UTP
|
|
RS-562
|
64 Kbps
|
Unbalanced
|
Mates to RS-232 (low voltage)
|
Point-to-Point
|
+/- 3.7v
|
TBD
|
|
EIA-568
|
100MHz
|
Balanced
|
90 meters
|
Multi-Point
|
------
|
------
|
UTP CAT5
|
|
RS-612
|
52 Mbps
|
Balanced
|
Unidirectional
|
Point-to-Point
|
ECL
|
Shielded cable 25 Twisted pair
|
|
EIA-644
|
655 Mbps
|
Balanced
|
10 meters, LVDS Elec. Spec only
|
All types
|
0.0~2.4V
|
Back Plane or Cable
|
|
RS-694
|
512 kbps
|
Unbalanced
|
Mates with RS-232
|
Point-to-Point
|
RS232
|
------
|
------
|
|
MIL-STD-1553
|
1.0 Mbps
|
Balanced
|
Redundant, half-duplex
|
Multi-Point
|
0 to 20V
|
75 Ohm Twinax
|
|
CAN bus
|
1 Mbps
|
Balanced
|
High Noise Environment
|
Multi-Point
|
+16V max
|
------
|
STP or UTP
|
|
AccessBus
|
100 Kbps
|
Unbalanced
|
Similar to I2C, 10 meter
|
Multi-Point
|
~ 5V
|
4 wire,Data/Clk/V/GND
|
|
I2C Bus
|
3.4 Mbps
|
Unbalanced
|
2 Wire, 1 Data, 1 Clk-Access Bus
|
Multi-Point
|
~ TTL
|
PWB
|
|
SMBus
|
100 KHz
|
Unbalanced
|
2 Wire, based on I2C/Access Bus
|
Multi-Point
|
TTL
|
Undefined
|
|
10Base2
|
10 Mbps
|
Unbalanced
|
183 meters, IEEE-802 Thin Net
|
Multi-Point
|
ECL
|
50 Ohm
|
------
|
|
10Base5
|
10 Mbps
|
Unbalanced
|
500 meters, IEEE-802 ThickNet
|
Multi-Point
|
ECL
|
50 Ohm
|
------
|
|
10Base-T
|
10 Mbps
|
Balanced
|
100 meters, Category 3 cable
|
Multi-Point
|
ECL
|
------
|
STP or UTP
|
|
10Base-F
|
10 Mbps
|
Fiber
|
2000 meters
|
Point-to-Point
|
---
|
Fiber
|
|
100Base-T
|
100 Mbps
|
Balanced
|
100 meters, Category 5 cable
|
Multi-Point
|
+/- 1.0v
|
------
|
STP or UTP
|
|
100Base-F
|
100 Mbps
|
Fiber
|
2000 meters
|
Point-to-Point
|
---
|
Fiber
|
|
Gigabit Ethernet
|
1000 Mbps
|
Fiber or 1000Base-T
|
Uses Fibre Channel or EIA568 CAT5
|
Point-to-Point
|
+/- 1.0v
|
Fiber or EIA568 STP
|
|
ATM
|
155 Mbps
|
N/A
|
Not the Physical Layer
|
Point-to-Point
|
N/A
|
Fiber or STP
|
|
SONET
|
9953.28Mbps
|
Fiber
|
STS-3 is 155.52Mbps
|
Point-to-Point
|
Optical
|
Fiber
|
|
Fibre Channel
|
1 Gbps
|
Differential
|
SCSI like, Fiber, Coax, or TP
|
Point-to-Point
|
ECL
|
Yes
|
Yes
|
|
FDDI
|
100 Mbps
|
Fiber
|
CDDI uses copper
|
Token Ring
|
ECL/PECL
|
Fiber or Copper
|
|
HIPPI
|
100 Mbps
|
Fiber
|
Fiber or Copper
|
Point-to-Point
|
Diff ECL
|
Fiber or Copper
|
|
HSSI
|
52 Mbps
|
Balanced
|
SCSI II like
|
Point-to-Point
|
Diff ECL
|
------
|
STP
|
|
RapidIO
|
10 Gbps
|
Balanced
|
Differential LVDS
|
Star / Mesh
|
LVDS
|
Back Plane or Cable
|
|
InfiniBand
|
2.5 Gbps
|
Balanced
|
Differential LVDS Pairs
|
Point-to-Point
|
LVDS
|
Copper or Fiber
|
|
HyperTransport
|
800Mbps/bit pair
|
Balanced
|
2/4/8/16/32 bits
|
Daisy-Chained
|
LVDS
|
PWB
|
|
FireWire, 1394a
|
400 Mbps
|
Differential
|
USB like, Back Plane or cable
|
Point-to-Point
|
0.6~0.8V
|
2 pairs of STP & 2 Power
|
|
FireWire, 1394b
|
800 Mbps
|
Differential
|
"...." 1394b
|
Point-to-Point
|
0.6~0.8V
|
2 pairs of STP & 2 Power
|
|
USB
|
12 Mbps
|
Differential
|
USB 1.1
|
Star Topology
|
0.3~3.6V
|
------
|
STP
|
|
USB
|
480 Mbps
|
Differential
|
USB 2.0
|
Star Topology
|
0.3~3.6V
|
------
|
STP
|
|
IEEE-488
|
1 Mbps
|
8 Bits
|
Equipment Control
|
Chained
|
TTL
|
24 Pin cable
|
|
HS-488
|
8 Mbps
|
8 Bits
|
Equipment Control, ignores NDAC
|
Chained
|
TTL
|
24 Pin cable
|
|
ATA-1
|
8.3Mbps
|
8 Bits
|
IDE; Hard / Floppy / CD Drive
|
Chained
|
Obsolete
|
40 pin ribbon cable
|
|
ATA-2
|
16 Mbps
|
8 Bits
|
IDE; Hard / Floppy / CD Drive
|
Chained
|
Obsolete
|
40 pin ribbon cable
|
|
ATA-3
|
16 Mbps
|
16 Bits
|
EIDE; Hard / Floppy / CD Drive
|
Chained
|
TTL
|
40 pin ribbon cable
|
|
ATA-4
|
33 Mbps
|
16 Bits
|
"......." Ultra ATA/33,Added CRC
|
Chained
|
TTL
|
80 pin ribbon/40 connect
|
|
ATA-5
|
66 Mbps
|
16 Bits
|
"......." Ultra ATA/66,Added CRC
|
Chained
|
TTL
|
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