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TPD2E001DRST-NM 数据表(PDF) 5 Page - Texas Instruments

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部件名 TPD2E001DRST-NM
功能描述  LOW-CAPACITANCE 2-CHANNEL 짹15-kV ESD-PROTECTION ARRAY FOR HIGH-SPEED DATA INTERFACES
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

TPD2E001DRST-NM 数据表(HTML) 5 Page - Texas Instruments

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0.1 µF
USB
Controller
R
T
R
T
V
BUS
D+
D–
GND
GND
IO2
D1
IO1
V
CC
TPD2E001
www.ti.com
SLLS684F
– JULY 2006 – REVISED FEBRUARY 2012
APPLICATION INFORMATION
Detailed Description
When placed near the connector, the TPD2E001 ESD solution offers little or no signal distortion during normal
operation due to low IO capacitance and ultra-low leakage current specifications. The TPD2E001 ensures that
the core circuitry is protected and the system is functioning properly in the event of an ESD strike. For proper
operation, the following layout/ design guidelines should be followed:
1. Place the TPD2E001 solution close to the connector. This allows the TPD2E001 to take away the energy
associated with ESD strike before it reaches the internal circuitry of the system board.
2. Place a 0.1-
μF capacitor very close to the VCC pin. This limits any momentary voltage surge at the IO pin
during the ESD strike event.
3. Make sure that there is enough metallization for the VCC and GND loop. During normal operation, the
TPD2E001 consumes nA leakage current. But during the ESD event, VCC and GND may see 15 A to 30 A of
current, depending on the ESD level. Sufficient current path enables safe discharge of all the energy
associated with the ESD strike.
4. Leave the unused IO pins floating.
5. The VCC pin can be connected in two different ways:
(a) If the VCC pin is connected to the system power supply, the TPD2E001 works as a transient suppressor
for any signal swing above VCC + VF. A 0.1-μF capacitor on the device VCC pin is recommended for ESD
bypass.
(b) If the VCC pin is not connected to the system power supply, the TPD2E001 can tolerate higher signal
swing in the range up to 10 V. Please note that a 0.1-
μF capacitor is still recommended at the VCC pin for
ESD bypass.
Copyright
© 2006–2012, Texas Instruments Incorporated
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Product Folder Link(s): TPD2E001


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