9-LINE LOW CAPACITANCE, μPOWER SCSI TERMINATOR LX5212
●DESCRIPTION
■The LX5212 is a nine-line active terminator for the SCSI parallel bus. This SCSI standard recommends active termination at both ends of the SCSI bus.
■During disconnect mode, the LX5212 re-quires a meager 500nA of supply current while offering only 2.5pF of output capaci-tance. To enter this low-power mode, the disconnect pin can be left open (floating)or driven high, thereby disconnecting the terminating resistors and placing the intern allow dropout regulator into low-power mode. In disconnect mode, each termin-tion line presents a high impedance to theSCSI bus with the overall effect being to preserve high signal integrity and yield subsequent reliable, error-free communications.
■During normal operation, the LX5212 consumes only 600μA of current, which isthe lowest enabled supply current of any terminator available on the market today. Linfinity's proprietary BiCMOS low dropout regulator architecture enables this unique and very efficient operating characteristic.
■The LX5212 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 LX5212 sinks up to 30mA of current,making it compatible with today's fast active negation drivers.
■The LX5212 is a superior, pin-for-pin replacement for a variety of industry products, such as the UC5614.
●KEY FEATURES
■2.5pF OUTPUT CAPACITANCE DURING DISCONNECT
■500nA SUPPLY CURRENT IN DISCONNECT MODE
■600μA SUPPLY CURRENT DURING NORMAL OPERATION
■30mA SINK CURRENT FOR ACTIVE NEGATION
■LOGIC COMMAND DISCONNECTS ALL TERMINATION LINES
■CURRENT LIMIT AND THERMAL PROTECTION
■COMPATIBLE WITH SCSI 1, 2, 3, AND FAST 20 STANDARDS
■HOT SWAP COMPATIBLE
■CONSULT FACTORY FOR APPLICATION TEST REPORT: 5212TR
■EVALUATION BOARD AVAILABLE
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LX5212 、 LX5212CN 、 LX5212CPWP 、 LX5212CD 、 LX5212CDPT |
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Datasheet |
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Please see the document for details |
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TSSOP;SOIC |
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English Chinese Chinese and English Japanese |
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11/97 |
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Rev. 1.8 |
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680 KB |
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