Hello team,
My customer asked if ESD224 is a suitable to protect LVDS for their Display. On speed I've not directly a concern however on the voltage levels.
The spec's of the Interface are recommended Max. 3.6V and Abs. Max 3.96V referred to GND. Interface Vih = 2.52V.
The ESD204 seems a better fit however the breakdown voltage is higher, how should this be engineered?
BR
Frank
Hi Frank,
If you are concerned about voltage clamping performance, ESD224 will be the better choice. ESD224 is slightly different than a typical ESD protection diode due to the fact that it has an integrated series resistor to limit the ESD current in addition to the diode. You can see this illustrated in the diagram in section 8.2 of the datasheet.
If you refer to the electrical characteristics table on the ESD224 datasheet, you'll see that the system side clamping voltage is 8 V for an 8 kV IEC strike. The 16 V TLP clamping voltage is higher, since it's only measuring the diode performance, not the entire chip with the resistor.
The downside of using ESD224 is that it does not allow for flow-through routing (section 11.2 in datasheet). If this is a requirement for your customer, ESD204 is the way to go.
Regards,
Matt Smith
