HDMIULC6-4SC6Y Datasheet, PDF (8/12 Pages) STMicroelectronics – Automotive ultralarge bandwidth ESD protection

Technical information
Figure 13.
Figure 14.
HDMIULC6-4SC6Y
Note:
The measurements have been done with the HDMIULC6-4SC6Y in open circuit.
Important:
An important precaution to take is to put the protection device as close as possible to the
disturbance source (generally the connector).
3.4
Crosstalk behavior
Figure 15. Crosstalk phenomena
R_G1
V_G1
R_G2
Line 1
Line 2
VG2
RL1
α₁V_G1 + β₁₂V_G2
RL2
α ₂V_G2 + β₂₁V_G1
DRIVERS
RECEIVERS
The crosstalk phenomena is due to the coupling between 2 lines. The coupling factor (₁₂ or
₂₁) increases when the gap across lines decreases, particularly in silicon dice. In the
example above the expected signal on load R_L2 is ₂V_G2, in fact the real voltage at this point
has got an extra value ₂₁V_G1. This part of the V_G1 signal represents the effect of the
crosstalk phenomenon of the line 1 on the line 2. This phenomenon has to be taken into
account when the drivers impose fast digital data or high frequency analog signals in the
disturbing line. The perturbed line will be more affected if it works with low voltage signal or
high load impedance (few k).
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Doc ID 018879 Rev 2