LX5226

TermPwr Voltage .................................................................................................+7V
Signal Line Voltage ................................................................................... 0V to +7V
Operating Junction Temperature
Plastic (DWP Packages) ............................................................................... 150°C
Storage Temperature Range .............................................................. -65°C to 150°C
Lead Temperature (Soldering, 10 seconds) .................................................... 300°C

The LX5226 SCSI terminator is part of Linfinity's UltraMAX family of high-performance, adaptive, non-linear mode SCSI products, which are designed to deliver true UltraSCSI performance in SCSI applications. The low-voltage BiCMOS architecture employed in its design offers superior performance to older linear passive and active techniques. Linfinity's UltraMAX architecture employs high-speed adaptive elements for each channel, thereby providing the fastest response possible - typically 35MHz, which is 100 times faster than the older linear regulator/ terminator approach used by other manufacturers.

Products LX5226 using this older linear regulator approach have bandwidths which are dominated by the output capacitor and which are limited to 500KHz (see further discussion in the Functional Description section). The UltraMAX architecture also eliminates the output compensation capacitor typical in earlier terminator designs. Each is approved for use with SCSI-1, -2, -3, UltraSCSI and beyond - providing the highest performance alternative available today.

The LX5226 architecture is much more tolerant of marginal system integrations. A key improvement offered by the LX 5226 lies in its ability to ensure reliable, error-free communications even in systems which do not adhere to recommended SCSI hardware design guidelines, such as the use of improper cable lengths and impedances. Frequently, this situation is not controlled by the peripheral or host designer and, when problems occur, they are the first to be made aware of the problem. To enter the disconnect mode, the disconnect pin must be driven high, thereby disconnecting the LX5226 from the SCSI bus.

Quiescent current is less than 150µA in this mode. Reduced component counts is also inherent in the LX5226 architecture. Traditional termination techniques require large stabilization and transient protection capacitors of up to 20µF in value and size. The LX 5226 architecture does not require these components, allowing all the cost savings associated with inventory, board space, assembly, reliability, and component costs. The LX5226 is a superior pin-for-pin replacement for the LX5207, the UC5601 / 5602 / 5610 and the UCC5610.