RS485/422 transceiver runs up to 100Mbit/s

Achieving a datarate more than double that of competing devices, the ISL3259E allows manufacturers to design the most dependable high datarate systems ever created.

Intersil has released the ISL3259E RS485/422 transceiver, a next-generation interface IC that combines the industry's fastest data transmission rate (100Mbit/s) with an incredibly low 2.6mA supply current and rugged 15kV IEC61000-4-2 ESD protection.

In achieving a datarate more than double that of competing devices, the ISL3259E allows manufacturers to design the most dependable high datarate systems ever created, giving unprecedented precision control in factory automation applications or doubling the throughput in applications requiring large data transfers.

The majority of higher-end RS485/422 transceivers are limited to datarates up to 40Mbit/s.

Precision control of motor positioning in factory automation systems requires high speed data transfers.

With its 100Mbit/s datarate, clearly the ISL3259E leads the way.

In addition, the ISL3259E integrates ESD protection that is between 33% and 100% greater than the ESD ratings of other very high speed transceivers in the marketplace.

This allows for the elimination of external protection components and saves on total costs.

This device's stellar ESD level is rated at 15kV air gap and 8kV contact discharge to IEC61000-4-2 on the RS485/422 bus pins and 9kV HBM on all of the other pins.

The ISL3259E has enhanced output differential voltage drive (Vod).

The transceiver Vod is specified to be 40% greater then the voltage specified by the RS485 protocol.

This enhancement and rugged features make the ISL3259E an ideal fit for factory automation applications.

Other applications also profit from the increased noise immunity and enhanced data integrity provided by the extra large Vod.

Parallel networks, like SCSI "fast 40" systems, benefit from the 100Mbit/s datarate and the low transceiver and receiver skews, as well as the 4ns part-to-part skews.

In addition, the receiver outputs deliver superior low state currents to ease the design of optically coupled isolated networks.

To round out the robust performance elements of the ISL3259E, the device also has a full fail-safe receiver, current limiting and thermal shutdown for driver overload protection, and hot plug transmitter and receiver outputs.

These features protect the ISL3259E outputs and prevent data corruption when cable faults occur or when a new node is added to an active bus.

This means systems will have enhanced data integrity and will be more rugged when using the ISL3259E.

In addition to these enhanced performance benefits, the ISL3259E is packaged in a small 3 x 3mm DFN package for space-savings along with an 8 lead MSOP package option.

The tiny package has a 70% smaller PCB footprint than standard 8-lead SOIC offerings and an integrated thermal slug provides approximately a 40% improvement in thermal resistance compared with the SOIC package.

The ISL3259E is available in DFN and MSOP packaging.

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