News Release from: Intersil
Edited by the Electronicstalk Editorial Team on 28 May 2004
Transceivers boost serial link performance
Novel one-eighth fractional-unit load full-duplex RS485/422 transceivers enable up to 256 nodes on the bus compared with only 32 nodes for single-unit load devices.
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Intersil has released two new Linearlink full-duplex RS485/422 transceivers, the ISL4489E and ISL4491E. The ISL4491E is the world's fastest 5V, full-duplex, one-eighth fractional-unit load transceiver with 15kV ESD protection. These new devices boost performance in a wide range of industrial and commercial applications where speed and reach are important.
Both the ISL4489E and the ISL4491E are one-eighth fractional-unit load transceivers that enable up to 256 nodes on the bus as compared with only 32 nodes for single-unit load devices.
The large number of nodes on a single bus saves cost and complexity in large networks that span a wide area, such as found in factory automation, process control, environmental control or security applications.
The ISL4489E is a 250Kbit/s slew-rate limited device intended for long networks, whereas the ISL4491E is a 15Mbit/s device intended for short-run networks at high data transfer rates.
The ICs are ESD protected to 15kV on all transmit (Tx) and receive (Rx) bus pins and up to 7kV on all other pins, which greatly improves survivability from random static charges during manufacturing and use.
Packaged in 14-lead SOICs, the devices are rated for the industrial temperature range of -40 to +85C.
Exceeding the tolerance of many competing parts, these ICs operate with a +/-10% tolerance from a 5V supply (4.5 to 5.5V range).
This relaxes the supply requirements and allows designers to employ a less costly power solution.
The suggested resale price in 100- to 999-unit quantities is $1.10 for each IC.
ICs are available on tape and reel.
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Copyright © 2000-2006 Pro-Talk Ltd, UK. Based on news supplied by Intersil - Subject: Linearlink ISL4489E and ISL4491E
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