CAN Protection
Highlights:
- Protocol constructed with CAN-High and CAN-Low lines
- Requires a 2-channel diode to protect both lines and to match capacitance
- Bi-directional Configuration is needed to protect from line faults and miswiring
- Working Voltage ranges of 12V, 24V
- Data rates of 1MBps, 5MBps, 20MBps for CAN, CANFD & CANXL protocols
- CAN runs on above data rates and protocol specifies < 20pF capacitance
|
TI Products Recommendations |
Working Voltage (V) |
IEC 61000-4-2 ESD Rating (kV) |
Cap (pF) |
Channel count |
Package Size (mm) |
Package |
Benefits |
|
±24 |
±30 |
3 |
2 |
2.92 x 1.3 2.0 x 2.1 |
SOT-23 SC-70 |
Highest ESD Rated CAN device at 12V |
|
|
±24 |
±20 |
1.7 |
2 |
2.92 x 1.3 |
SOT-23 |
Cost Effective CAN Protection |
|
|
±36 |
±25 |
2.8 |
2 |
2.92 x 1.3 2.0 x 2.1 |
SOT-23 SC-70 |
Protection above 24V for CAN |
< Related Documentation>
Protecting Automotive CAN Bus Systems from ESD Overvoltage Events
Analog Applications Journal 1Q14
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