Intersil adds new 3.3-VRS-485/422 transceivers to LINEARLINK family.Intersil Corporation (Nasdaq:ISIL ISIL International Society for Individual Liberty
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ISIL Intelligence Systems Integration Laboratory (Ft. Huachuca, Arizona; US Army facility for integrating intelligence systems) ), a designer and manufacturer of high performance analog solutions, recently announced two new LINEARLINK RS-485/422 serial data transceivers designed for 3.3-V applications. The ISL ISL - Interface Specification Language. Xerox PARC. Interface description language used by the ILU (Inter-Language Unification) system. Includes descriptions of multiple inheritance, exceptions and garbage collection.
E-mail: Bill Janssen <firstname.lastname@example.org>. 83483 and ISL83485 operate from a wide +/-10% voltage range of +3 to +3.6 V, which relaxes supply requirements and reduces costs. Many competing products require a more costly +/-5% supply tolerance. Applications for these data transceivers include, but are not limited to, factory automation, security networks and building environmental control.
Both the ISL83483 and ISL83485 are half-duplex transceivers whose receive (Rx) and transmit (Tx) functions are multiplexed, reducing pin count and package size with only 8-leads. Rx inputs feature a fail-safe-if-open design, which ensures a logic high Rx output if Rx inputs are floating. A "lock-out" feature keeps the Rx output disabled, when exiting shutdown, until the Rx has determined what state it should go to. This prevents the Rx output from accidentally generating an interrupt while the Rx wakes up. Although these are 3.3-V devices, their logic inputs can be driven with 5-V logic levels in mixed voltage systems.
Driver outputs are short circuit protected, even for voltages exceeding the power supply voltage. Additionally, on-chip thermal shutdown circuitry disables the Tx outputs to prevent damage if power dissipation becomes excessive. Each device supports a combination of up to 32 drivers and receivers on a single bus enabling bi-directional communications over a single twisted-pair cable. In addition, both devices have an automatic low-power shutdown feature in which the device draws only 15 nA (typical).
The ISL83483 is slew-rate limited for error free data transmission in applications where the data rate is less than 250 kbps, typically used for long runs. Slew-rate limiting reduces EMI (ElectroMagnetic Interference) An electrical disturbance in a system due to natural phenomena, low-frequency waves from electromechanical devices or high-frequency waves (RFI) from chips and other electronic devices. Allowable limits are governed by the FCC. and minimizes reflections from improperly terminated transmission lines, or unterminated stubs stubs
The shares of equity in a firm that is financed almost completely with debt. Stubs are often created when firms go through a leveraged buyout or pay big cash dividends in order to fend off a takeover. in multi-drop and multipoint applications.
The ISL83485 can operate up to 10 Mbps for high-speed applications. These transceivers are built using the Intersil BiCMOS process and meet both the RS-485 and RS-422 standards for balanced (differential) communication. Balanced data-transmission schemes offer robust noise immunity for data communications data communications, application of telecommunications technology to the problem of transmitting data, especially to, from, or between computers. In popular usage, it is said that data communications make it possible for one computer to "talk" with another. over long distances.
The typical use for RS-485 is a single PC connected to several addressable Reachable. When something is addressable, it can be identified and manipulated independently of its surroundings. For example, screen pixels and RAM memory are addressable. Each of the screen's picture elements can be individually turned on and off, and each of the memory's bytes can be devices that share the same cable. RS-422 is similar to RS-485 except that only one driver and up to ten receivers are allowed on the bus. The single driver limitation requires two twisted Two Twisted is an Australian TV mystery drama which premiered on the Nine Network on 14 August, 2006. Narrated by Bryan Brown, who also produced the series' predecessor, Twisted Tales pairs for bi-directional communications.
The ISL83483 and ISL83485 are available now. Suggested resale pricing for 100-to 999-unit quantities is $1.21 each for the ISL83483IB (SOIC (Small Outline IC) A small-dimension, plastic, rectangular, surface mount chip package that uses gull-wing pins extending outward. See gull-wing lead, SOJ and chip package. package) and ISL83483IP (PDIP (Plastic DIP) See DIP. package) and $1.05 each for the ISL83485IB (SOIC package) and ISL83485IP (PDIP package). Both are available on tape and reel.