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LX5111CPWP Datasheet(PDF) 1 Page - Microsemi Corporation |
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LX5111CPWP Datasheet(HTML) 1 Page - Microsemi Corporation |
1 / 4 page 0 to 70 LX5111CDP LX5111CPWP LX5112CDP LX5112CPWP UL TRA 9-C HANNEL SCSI T ERMINA T O R P RODUCTION D AT A S HEET T HE I NFINITE P OWER OF I NNOV A TION LX5111/5112 LIN D OC #: 5111 DESCRIPTION KEY FEA TURES s ULTRA-FAST RESPONSE FOR FAST-20 SCSI APPLICATIONS s 35MHz CHANNEL BANDWIDTH s 3.3V OPERATION s LESS THAN 3pF OUTPUT CAPACITANCE s SLEEP-MODE CURRENT LESS THAN 275µA s THERMALLY SELF LIMITING s NO EXTERNAL COMPENSATION CAPACITORS s IMPLEMENTS 8-BIT OR 16-BIT (WIDE) APPLICATIONS s COMPATIBLE WITH ACTIVE NEGATION DRIVERS (60mA / CHANNEL) s COMPATIBLE WITH PASSIVE AND ACTIVE TERMINATIONS s APPROVED FOR USE WITH SCSI 1, 2, 3 AND ULTRA SCSI s HOT SWAP COMPATIBLE s PIN-FOR-PIN COMPATIBLE WITH LX5211 AND UC5606 (LX5111) s PIN-FOR-PIN COMPATIBLE WITH LX5212 AND UC5603/5613/5614 (LX5112) Receiver LX5111/5112 LX5268 LX5268 1 Meter, AWG 28 Driver LX5111/5112 D RIVING WAVEFORM - 20MHZ RECEIVING W AVEFORM - 20MHZ PRODUCT HIGHLIGHT The LX5111/5112 SCSI terminators are 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 their design offers su- perior 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 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 to- day. Another key improvement offered by the LX5111/5112 lies in their ability to insure 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. The LX5111/5112 architecture is much more tolerant of marginal system integrations. Recognizing the needs of portable and configurable peripherals, the LX5111/5112 have a TTL compatible sleep/disable mode. Quiescent current is typically less than 275µA in this mode, while the output capacitance is also less than 3pF. The obvious advantage of extended battery life for portable systems is inherent in the product's sleep-mode feature. Additionally, the disable function permits factory-floor or production-line configurability, reducing inventory and product- line diversity costs. Field configurability can also be accomplished without physically removing components which, often times results in field returns due to mishandling. Reduced component counts is also inherent in the LX5111/5112's architecture. Traditional ter- mination techniques require large stabilization and transient protection capacitors of up to 20µF in value and size. The LX5111/5112 architecture does not require these components, allowing all the cost savings associated with inventory, board space, assembly, reliability, and component costs. NOTE: For An In-Depth Discussion On Applying SCSI, Request Linfinity Application Note: "Understanding The Single- Ended SCSI Bus" UltraMAX TM P ACKAGE ORDER INFORMA TION T A (°C) Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (i.e. LX5111CDPT) Plastic SOIC 16-pin, Power DP PWP Plastic TSSOP 24-pin, Power Copyright © 1997 Rev. 1.1 12/97 1 11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570 L IN F INITY M ICROELECTRONICS I NC . IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com. |
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