Dallas Semiconductor's Plug and Play SCSI Terminator switches automatically.DALLAS--(BUSINESS WIRE)--Feb. 6, 1996--A new chip in Dallas Semiconductor's (NYSE NYSE See: New York Stock Exchange :DS) SCSI termination The end of a SCSI chain, which must be identified by placing a resistor module in the open port. See SCSI. line satisfies the Plug and Play SCSI SCSI in full Small Computer System Interface Once common standard for connecting peripheral devices (disks, modems, printers, etc.) to small and medium-sized computers. SCSI has given way to faster standards, such as Firewire and USB. requirement of automatic switchable termination on SCSI host bus adapters or motherboards. When the system end user connects external devices to the computer, the DS2109 automatically disconnects its termination resistors from the SCSI bus to preserve SCSI system integrity. The DS2109 is also fully compliant with SCSI, SCSI-2, SCSI-3 and SCSI-3 Fast-20 standards. Said Louis Grantham, product manager: "The DS2109 provides active termination for 18 signal lines, so only one chip is needed for automatic termination in Plug and Play SCSI host bus adapters or motherboards. One DS2109 can be used for Narrow SCSI, to terminate 18 lines. When the DS2109 is used in conjunction with Dallas Semiconductor's DS21S07A Terminator, which it controls through an output pin, it can terminate the 27 lines needed for Wide SCSI-2, SCSI-3 Parallel Interface (SPI (1) (Stateful Packet Inspection) See stateful inspection. (2) (Service Provider Interface) The programming interface for developing Windows drivers under WOSA. ) and SCSI-3 Fast-20. When isolated from the SCSI bus, the DS2109 adds only 3pF of capacitance to the SCSI bus when it is isolated. The resistors and voltage regulator An electronic circuit used to maintain a level amount of voltage in an electrical line. It eliminates power surges, spikes and brownouts, which can cause harm to sensitive electronics. A voltage regulator "module" (VRM) is a voltage regulator in a replaceable unit. See surge suppression and UPS. have 2 percent precision over the full temperature and voltage range so the maximum current needed for smooth SCSI bus transmissions is achieved in any environment. Offered in a space-saving, 28-pin 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, the DS2109 SCSI Terminator sells for $3.30 in quantities of 1,000. Dallas Semiconductor designs, manufactures and markets CMOS (Complementary Metal Oxide Semiconductor) Pronounced "c-moss." The most widely used integrated circuit design. It is found in almost every electronic product from handheld devices to mainframes. chips and chip-based subsystems. In its 12-year history, the company has sold its products to more than 8,000 customers worldwide. These include original equipment manufacturers (OEMs) in instrumentation, factory automation, personal computers, office equipment, telecommunications, medical equipment and mainframe computers. Chips and subsystems are sold through a direct sales force, distributors and manufacturers' representatives worldwide. CONTACT: Dallas Semiconductor Corp., Dallas Syd Coppersmith, 214/450-5349 (editors' contact) Louis Grantham, 214/450-0448, 214/450-0470 (fax) (readers' contact) |
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