Technical information

USBLC6-4

6/13

Note:

The measurements have been done with the USBLC6-4SC6 in open circuit.

Important:

A good precaution to take is to put the protection device as close as possible to the

disturbance source (generally the connector).

2.4

Crosstalk behavior

2.4.1

Crosstalk phenomenon

Figure 11.

Crosstalk phenomenon

The crosstalk phenomenon is due to the coupling between 2 lines. The coupling factor (

β12

or

β21) increases when the gap across lines decreases, particularly in silicon dice. In the

has got an extra value

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

Ω).

Figure 9.

Remaining voltage after the

USBLC6-4SC6 during positive ESD

surge

Figure 10.

Remaining voltage after the

USBLC6-4SC6 during negative ESD

surge

Line 1

Line 2

DRIVERS

RECEIVERS

α

β

+

1

12

α

β

+

2

21