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TPD3E001 Folha de dados(PDF) 6 Page - Texas Instruments

Nome de Peças TPD3E001
Descrição Electrónicos  Low-Capacitance 3-Channel ESD-Protection for High-Speed Data Interfaces
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
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TPD3E001 Folha de dados(HTML) 6 Page - Texas Instruments

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IO3
GND
IO2
IO1
V
CC
TPD3E001
SLLS683F – JULY 2006 – REVISED OCTOBER 2015
www.ti.com
7 Detailed Description
7.1 Overview
The TPD3E001 is a three-channel Transient Voltage Suppressor (TVS) based Electrostatic Discharge (ESD)
protection diode array. The TPD3E001 is rated to dissipate ESD strikes at the maximum level specified in the
IEC 61000-4-2 international standard (Level 4). This device has a 1.5-pF IO capacitance per channel, making it
ideal for use in high-speed data IO interfaces. The ultra low leakage current (< 1 nA maximum) is suitable for
precision analog measurements in applications like glucose meters and heart rate monitors. The wide voltage
range on VCC (up to 5.5V) gives this device the flexibility to be used in a wide variety applications. Having 3-
channels of ESD protection makes this device particularly well suited to protect a micro-AB USB connector,
which has three signal lines to be protected (D+, D-, ID). The VBUS pin can also be protected by connecting it to
VCC on TPD3E001. Therefore, TPD3E001 is a one-chip solution to provide Level 4 IEC 61000-4-2 ESD
protection on every pin of the micro-AB USB connector.
7.2 Functional Block Diagram
7.3 Feature Description
TPD3E001 is a uni-directional ESD protection device with low capacitance. The device is constructed with a
central ESD clamp that features two hiding diodes per line to reduce the capacitive loading. This central ESD
clamp is also connected to VCC to provide protection for the VCC line. Each IO line is rated to dissipate ESD
strikes at the maximum level specified in the IEC 61000-4-2 level 4 international standard. The TPD3E001's low
loading capacitance makes it ideal for protection high-speed signal terminals.
7.4 Device Functional Modes
TPD3E001 is a passive-integrated circuit that activates whenever voltages above VBR or below the lower diodes
Vforward (–0.6V) are present upon the circuit being protected. During ESD events, voltages as high as ±15 kV can
be directed to ground and VCC via the internal diode network. Once the voltages on the protected lines fall below
the trigger voltage of the TPD3E001 (usually within 10's of nano-seconds) the device reverts back to a high-
impedance state.
6
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