Intersil's New RS-485/RS-422 Transceivers Deliver Industry's Widest Common-Mode Range, Provide Excellent Reliability



Intersil Corporation (NASDAQ Global Select: ISIL), today introduced the ISL3247xE, ISL3248xE, and ISL3249xE series of robust, fault-protected RS-485/RS-422 transceivers that combine overvoltage protection (OVP), high electrostatic discharge (ESD) tolerance and wide common-mode range. Also featuring low quiescent supply current, the devices provide maximum transceiver performance with excellent reliability in harsh operating environment applications such as security/surveillance cameras, industrial process control and factory automation networks. The new ISL3247xE, ISL3248xE and ISL3249xE series delivers the industry's widest common-mode range (CMR) compared to similar competitive RS-485 devices. Driver outputs and receiver inputs are fault-protected against voltages as high as 60V and are protected against ESD events up to 16.5kV, enhancing reliability in harsh environments. The devices have a quiescent supply current of only 2.3mA, which is 30 percent to 50 percent lower than most competitive devices. Features and Specifications The ISL3249xE and ISL3248xE series combine both 60V OVP and 25V CMR, while the ISL3247xE is rated at 60V OVP and 15V CMR. The family provides designers with a full range of options including slew rate limited versions, high data rate versions and both half-duplex and full-duplex configurations. This new product family includes full fail-safe receiver inputs ensuring a logic high receiver output if the inputs are shorted, floating or on an idle bus, eliminating the need for bus-biasing resistors. A common installation error is swapping the cable data wires. To address this problem, the ISL3248xE series includes a polarity reversal feature that can remotely correct for this common installation error without requiring rewiring of the cable or the connector. Pricing and Availability The ISL3247xE, ISL3248xE and ISL3249xE series are available now in a variety of packages including 8-pin and 14-pin SOIC and 8-pin MSOP packages. Pricing starts at $1.40 each in 1,000-piece quantities.