PSR05_12 Datasheet, PDF (6/9 Pages) Protek Devices – 500 WATT LOW CAPACITANCE STEERING DIODE/TVS ARRAY

Only One Name Means ProTek’Tion™
application information
1
2
2
1
VBus
4
VBus
3
USB
PORT
D+
D- _VBus
D+
USB
D-
PORT
3
VBus
4
figure 1 - USB Protection
Two PSR05s (Unidirectional) in a Common-Mode configuration. Circuit connectivity is as follows:
• Pins 2 and 3 are connected to the datalines
• Pin 1 is connected to ground
• Pin 4 is connected to the databus
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.
PSR05
05116.R9 10/12
Page 6
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