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05102.R9 9/12

Page 6

PLCDA03C-6 - PLCDA15C-6

APPLICATION INFORMATION

FIGURE 1 - BIDIRECTIONAL COMMON-MODE PROTECTION FOR A TRANSCEIVER

Circuit connectivity is as follows:

• Line 1 connected to Pin 1.

• Line 2 connected to Pin 2.

• Line 3 connected to Pin 3.

• Line 4 connected to Pin 8.

• Line 5 connected to Pin 7.

• Line 6 connected to Pin 6.

• Pins 4 and 5 connected to ground.

CIRCUIT BOARD RECOMMENDATIONS

Circuit board layout is critical for electromagnetic compatibility protection. The following guidelines are recommended:

• The protection device should be placed near the input terminals or connectors, the device will divert the transient current

immediately before it can be coupled into the nearby traces.

• The path length between the TVS device and the protected line should be minimized.

• All conductive loops including power and ground loops should be minimized.

• The transient current return path to ground should be kept as short as possible to reduce parasitic inductance.

• Ground planes should be used whenever possible. For multilayer PCBs, use ground vias.

1

2

4

8

3

5

6

7

Line 6

Line 5

Line 4

Line 3

Line 2

Line 1