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05051.R13 1/11

Page 6

SM16LC03 - SM16LC36C

APPLICATION INFORMATION

FIGURE 1 - BIDIRECTIONAL COMMON-MODE PROTECTION

Circuit connectivity is as follows:

• Line 1 connected to Pin 9.

• Line 2 connected to Pin 10.

• Line 3 connected to Pin 11.

• Line 4 connected to Pin 12.

• Line 5 connected to Pin 13.

• Line 6 connected to Pin 14.

• Line 7 connected to Pin 15.

• Line 8 connected to Pin 16.

• Pins 1 - 8 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

5

4

16

3

6

7

8

9

10

11

12

13

14

15

Line 3

Line 4

Line 5

Line 6

Line 7

Line 8

Line 2

Line 1

D

D

R

R

Transceiver