News & Events
Intersil Releases Ultra-High-Speed RS-485/422 PROFIBUS Data Transceivers With Unsurpassed Driver Output voltage
-- Unsurpassed 2.5V Driver output voltage significantly exceeds the 2.1-V PROFIBUS requirement~-- 40 and 30 Mbps data rates with low part-to-part skews for high-speed paralleling ~-- Wide supply tolerance of +/-10% relaxes supply requirements and reduces cost
MILPITAS, CA, January 20, 2004 Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high performance analog solutions, today announced two new ultra-high-speed RS-485/422 serial data transceivers, the ISL4486 and ISL81486. Both ICs are half-duplex configurations that operate from a nominal 5-V supply over a wide +/-10% tolerance voltage range of +4.5 to +5.5 V, which relaxes supply requirements and reduces costs. The ISL4486 provides an ultra-fast 40 Mbps data rate and an industry-leading 2.5-V differential signal into a 54-Ohm load. The ISL81486 delivers 30 Mbps and a 2.3V differential output voltage. The ISL4486 and ISL81486 are rated as 0.6-unit load transceivers that allow 50 nodes on a bus compared to the usual single-unit load allowance of only 32 nodes.
Applications for these half-duplex transceivers include, but are not limited to, PROFIBUS DP or FMS for factory automation, SCSI Fast 40 and Fast 20 drivers and receivers, Field Bus networks, security networks, process control, plant environmental control and remote sensing and metering. The ultra-high data rates and large differential output voltages make these new transceivers ideal for PROFIBUS applications where speed, reach and data integrity are essential. The low data skewing and part-to-part performance consistency make them ideal for parallel applications such as high-speed SCSI systems.
The ISL4486 and ISL81486 are half-duplex transceivers whose receive (Rx) and transmit (Tx) functions are multiplexed, reducing package size and pin count to only 8-leads. Rx inputs feature a fail-safe-if-open design, which ensures a logic high Rx output if Rx inputs are floating. This prevents the Rx output from chattering, and accidentally generating interrupts, if the receiver becomes disconnected from the bus. Driver outputs are short circuit protected, even for voltages that exceed the supply voltage. Additionally, on-chip thermal shutdown circuitry disables the Tx outputs to prevent damage if power dissipation becomes excessive.
ISL4486 and ISL81486 Technical Details
- Unsurpassed differential output voltage; 2.5 V into 54-Ohm load ISL4486
- Ultra High Speed Data Rates; 40 Mbps ISL4486; 30 Mbps ISL81486
- PROFIBUS, RS-485, and RS-422 compliant
- ISL81486 is a pin-for-pin replacement and performance upgrade for competing products of similar nomenclature
- Tiny 8-lead MSOP (U suffix), or industry standard SOIC (B suffix) packages
- 0.6-unit load for up to 50 nodes on the bus
- Very low 800 uA quiescent current
- Single +5 V supply, +/-10% voltage tolerance, +4.5 to +5.5 V range
- Half-duplex bi-directional operation, differential signaling
- -7 to +12 V common-mode input voltage range for reliable operation over long, noisy runs
- Short-circuit protected driver outputs with on-chip thermal shutdown for extra protection
- Three-state Rx and Tx output pins
The ISL4486 and ISL81486 are available now. Suggested resale pricing for 100- to 999-unit quantities is $1.30 each for the ISL4486IB/IU and $1.20 each for the ISL81486IB/IU. Visit this Intersil Web site for cross-reference and other information: http://www.intersil.com/interface/rs-485.asp About Intersil
Intersil Corporation is a leader in the design and manufacture of high performance analog semiconductors. The company’s products address three of the industry’s fastest growing markets - flat panel displays, optical storage (CD and DVD recordable) and power management. Intersil products include power management devices for battery management, hot-swap and hot-plug controllers, linear regulators, supervisory ICs, switching DC-DC regulators and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; video and high performance operational amplifiers; data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and rad-hard applications. For more information about Intersil or to find out how to become a member of our winning team, visit the company’s web site and career page at: www.intersil.com.
This release may include "forward looking statements" that are subject to risks and uncertainties. For information identifying economic, political, climatic, currency, regulatory, technological, competitive and some other important factors that could cause actual results to differ materially from those anticipated in the forward looking statements, see Intersil’s Safe Harbor Forward Looking Statement disclaimer found at http://www.intersil.com/legal.asp, as well as Intersil’s SEC filings as updated from time to time, found at http://www.sec.gov. All other trademarks mentioned are the property of their respective owners.
