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NXP Semiconductors
PRTR5V0U2X
Ultra low capacitance double rail-to-rail ESD protection diode
7. Application information
Handling data rates up to 480 Mbit/s, USB 2.0 interfaces require ESD protection devices
with an extremely low line capacitance in order to avoid signal distortion.
With a capacitance of only 1 pF, the PRTR5V0U2X offers IEC 61000-4-2, level 4
compliant ESD protection.
The PRTR5V0U2X integrates two pairs of ultra low capacitance rail-to-rail ESD protection
diodes and an additional ESD protection diode.
The additional ESD protection diode connected between ground and V CC prevents
charging of the supply.
To achieve the maximum ESD protection level, no additional external capacitors are
required.
USB controller
protected IC/device
D +
common mode
choke
D +
V BUS
D ?
V BUS
D ?
GND
006aaa485
Fig 5. Application diagram: USB 2.0
Circuit board layout and protection device placement
Circuit board layout is critical for the suppression of ESD, Electrical Fast Transient (EFT)
and surge transients. The following guidelines are recommended:
1. Place the PRTR5V0U2X as close to the input terminal or connector as possible.
2. The path length between the PRTR5V0U2X and the protected line should be
minimized.
3. Keep parallel signal paths to a minimum.
4. Avoid running protected conductors in parallel with unprotected conductors.
5. Minimize all Printed-Circuit Board (PCB) conductive loops including power and
ground loops.
6. Minimize the length of the transient return path to ground.
7. Avoid using shared transient return paths to a common ground point.
8. Ground planes should be used whenever possible. For multilayer PCBs, use ground
vias.
PRTR5V0U2X_2
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 — 14 January 2008
6 of 11
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相关代理商/技术参数
PRTR5V0U2X,215-CUT TAPE 制造商:NXP 功能描述:PRTR5V0U2X Series 9 V 16 pF Rail-to-Rail ESD Protection Diode - SOT-143B
PRTR5V0U2X215 制造商:NXP Semiconductors 功能描述:TVS-DIODE
PRTR5V0U4AD 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Integrated quad ultra-low capacitance ESD protection
PRTR5V0U4AD T/R 功能描述:TVS二极管阵列 DUAL USB 2.0 ESD PROTECTION RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
PRTR5V0U4AD,125 功能描述:TVS二极管阵列 DUAL USB 2.0 ESD RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
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PRTR5V0U4D 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Integrated quad ultra-low capacitance ESD protection
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