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1.1 General description

The IP4234CZ6 is designed to protect Input/Output (I/O) USB 2.0 ports, that are sensitive

to capacitive loads, from being damaged by ElectroStatic Discharge (ESD). The π-

filter structure is implemented with a small series resistor to provide the necessary

protection to signal and supply components from ESD voltages greater than ±8 kV

contact discharge according IEC 61000-4-2, level 4.

The ESD protection is independent of the supply voltage due to the rail-to-rail diode

architecture being connected to a Zener diode.

The IP4234CZ6 is fabricated using monolithic silicon technology and integrates two ultralow

capacitance π-filter ESD protection diodes plus a Zener diode in a miniature 6-lead

SOT457 package.

1.2 Features

? Pb-free and RoHS compliant

? Simple, direct signal routing provides for high speed signal integrity

? ESD protection compliant to IEC 61000-4-2 level 4, ±8 kV contact discharge

? Four low input capacitance (3.1 pF typical) rail-to-rail ESD protection diodest

? Low voltage clamping due to an integrated Zener diode

? Small 6-lead SO6 (SOT457) package

? IEC 61000-4-5 15 A Lightning (8/20 μs) compliant

1.3 Applications

? General-purpose downstream ESD protection high frequency analog signals and highspeed

serial data transmission for ports inside:

– Cellular and PCS mobile handsets

– PC/Notebook USB2.0/IEEE1394 ports

– DVI interfaces

– HDMI interfaces

– Cordless telephones

– Wireless data (WAN/LAN) systems

– PDAs