What is the maximum cable length in relation to data rate for CAN, RS-232, RS422, and USB?
|
Protocol |
Max Speed |
Typical Max Cable Length |
Key Considerations |
|
CAN |
1 Mbps |
40 m |
Needs termination (120Ω) |
|
RS-232 |
115.2 kbps |
5-15 m |
Single-ended, noise-sensitive |
|
RS-422 |
10 Mbps |
12 m (120 m @ 1 Mbps) |
Differential, multi-drop |
|
USB 2.0 |
480 Mbps |
5 m (passive) |
Requires hubs for longer runs |
|
USB 3.0 |
5 Gbps |
3 m (passive) |
Active optical for > 3 m |
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