Local area network switches protect consumer devices

San Jose, Calif. — Pericom Semiconductor Corp.'s pair of mutliplexer/demultiplexer Gigabit Ethernet local area network (LAN) switches are said to sport the highest level of electrostatic discharge (ESD) protection for susceptible products ranging from PC's to televisions.

Pericom's PI3L301D-A and PI3L500-A are 3.3 volt, 16-bit to 8-bit switches, with single enable, and enhanced ESD protection. The PI3L500-A analog switch includes light-emitting diode (LED) switching.

“Pericom's devices meet or exceed the highest standards of all three ESD types including human body model (HBM), contact discharge, and machine model, thus allowing customers to have the confidence of greater tolerance of high voltage surges and better protection of their systems internal circuitry,” said Shaf Rahman, Pericom's marketing director.

According to the IEC specification, consumer products must provide the highest level of ESD support, which is 8 kV of contact-ESD protection, Rahman said. “Typically, external circuitries, such as diodes, are needed to achieve the higher ESD protection. Some external ESD solutions can cost up to $0.25 per Ethernet port. The same robust ESD support is now integrated into Pericom's new PI3L301D-A and PI3L500-A products,” he said. (See related graph below)

Additional features of the PI3L301D-A and PI3L500-A switches include low bit-to-bit skew (200 picoseconds), low crosstalk (-27 dB at 250 MHz), on resistance is 4-ohm typical, near-zero propagation delay (250 ps), routes 10/100/1000 Mbit Ethernet signals, switching speed of 9 nanoseconds, channel on-capacitance is 11 picofarads (maximum) and a Vcc operation range of +3.0 V to +3.6 V.

Free samples, data sheets, Ibis, application note, and technical support are available today through the company website. These devices are in full production and are priced at roughly $1.50 in 1,000-unit quantities. Click here for the PI3L301D-A data sheet. Click here for the PI3L500-A data sheet.

Pericom Semiconductor Corp. , 1-800-435-2336,

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