Vcc (optional)

Ch1_In

Ch1_Out

Ch2_In

Ch2_Out

TPD2S017

TPD2S017

SLLS949B – SEPTEMBER 2009 – REVISED DECEMBER 2015

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7 Detailed Description

7.1 Overview

The TPD2S017 is a two-channel ESD protection device. The two-stage ESD diodes and 1-

Ω isolation resistor

topology of the device gives the system very robust and good protection during ESD strikes. The TPD2S017

conforms to the IEC61000-4-2 ESD protection standard. The TPD2S017 provides a –3-dB frequency at almost 3

GHz which provides enough bandwidth for a vast majority of applications. Thanks to the monolithic silicon

technology, the tight matching of the line capacitances and series resistances ensures a minimum distorted

differential signal and a high operating differential data rate. The DBV package offers a flow-through pin mapping

for ease of board layout.

7.2 Functional Block Diagram

7.3 Feature Description

Each channel of the TPD2S017 device has a topology of two-stage clamps with isolation resistor. This topology

optimizes the clamping performance while supporting a high bandwidth. Due to the low clamping voltage, the

down stream circuits that connect to the output of the channels are well-protected. The high IEC 61000-4-2 level

ensures the system's robustness during the ESD events. The good matching of the resistor and capacitance

values will yield minimal distortion of the signals. The low resistance and capacitance values make sure that this

device supports a high differential data rate. The flow-through pinout ensures no additional layout burden on the

printed circuit board (PCB).

7.4 Device Functional Modes

The TPD2S017 device stays passive and has low leakage during normal operation when the voltage at the input

or below ground. During IEC ESD events, contact transient voltages as high as ±11 kV can be suppressed.

When the voltages on the protected lines fall below the trigger voltage, the device reverts back to the low

leakage passive state.

6

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