PSRDA3.3-6(2010) 데이터 시트보기 (PDF) - ProTek Devices.
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PSRDA3.3-6 Datasheet PDF : 9 Pages
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Only One Name Means ProTek’Tion™
application information
8
7
6
5
PSRDA3.3-6 - PSRDA05-6
USB Port
V
BUS
D+
D-
GND
USB Port V
D+
BUS
D-
GND
1
2
3
4
USB Port V
BUS
D+
D-
GND
figure 1 - differential mode usb protection
Circuit connectivity is as follows:
• Pins 1, 2, 4, 5, 6 and 7 connected to the datalines.
• Pin 8 connected to ground.
• Pin 3 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.
05110.R9 11/10
Page 6
www.protekdevices.com
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