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LX5208CDWP Datasheet(PDF) 1 Page - Microsemi Corporation |
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LX5208CDWP Datasheet(HTML) 1 Page - Microsemi Corporation |
1 / 4 page P ACKAGE ORDER INFO T A (°C) 0 to 70 LX5208CDWP Plastic SOWB 28-pin, Power DWP Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (i.e. LX5208CDWPT) FOR FUR THER INFORMA TION CALL (714) 898-8121 11861 WESTERN A VENUE, GARDEN G ROVE, CA. 92841 1 18-LINE LOW CAPACITANCE, µPOWER SCSI TERMINATOR P RODUCTION D AT A S HEET T HE I NFINITE P OWER OF I NNOV A TION LX5208 LIN D OC #: 5208 DESCRIPTION KEY FEA TURES s 3.5pF OUTPUT CAPACITANCE DURING DISCONNECT s 60µA SUPPLY CURRENT IN DISCON- NECT MODE s 800µA SUPPLY CURRENT DURING NORMAL OPERATION s 200mA SINK CURRENT FOR ACTIVE NEGATION s LOGIC COMMAND DISCONNECTS ALL TERMINATION LINES s CURRENT LIMIT AND THERMAL PROTECTION s COMPATIBLE WITH SCSI 1, 2 AND 3 STANDARDS s CONSULT FACTORY FOR APPLICATION TEST REPORT: 5208TR The LX5208 is an eighteen-line active termi- nator for the SCSI parallel bus. This SCSI standard recommends active termination at both ends of the SCSI bus. During disconnect mode, the LX5208 re- quires a meager 60µA of supply current while offering only 3.5pF of output capacitance. To enter this low-power mode, the discon- nect pin can be left open (floating) or driven high, thereby disconnecting the terminating resistors and placing the internal low dropout regulator into low-power mode. In discon- nect mode, each termination line presents a high impedance to the SCSI bus with the overall effect being to preserve high signal integrity and yield subsequent reliable, error free communications. During normal operation, the LX5208 con- sumes only 800µA of current, which is the lowest enabled supply current of any termi- nator available on the market today. Linfinity's proprietary BiCMOS low dropout regulator architecture enables this unique and very efficient operating characteristic. The LX5208 also offers a precisely trimmed channel output current specified to a 5% tolerance. The maximum value of the output current is trimmed as closely as possible to the SCSI standard maximum specification to give the highest possible noise margin for fast SCSI operation. And the LX5208 sinks up to 200mA of current making it compatible with today's fast active negation drivers. The LX5208 is a superior, pin-for-pin re- placement for a variety of industry products such as the UC5601, UC5602, UC5608, and UC5609. Copyright © 1998 Rev. 1.9 3/98 PRODUCT HIGHLIGHT RECEIVING W AVEFORM - 10MH Z DRIVING WAVEFORM - 10MH Z Receiver LX5208 LX5208 LX5268 LX5268 1 Meter, AWG 28 Driver NOTE: For An In-Depth Discussion On Applying SCSI, Request Linfinity Application Note: "Understanding The Single-Ended SCSI Bus" |
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