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LX5247

Microsemi Corporation
Part Number LX5247
Manufacturer Microsemi Corporation
Description 9 - LINE LVD SCSI TERMINATO
Published Mar 30, 2005
Detailed Description UltraMAX TM LX5245/5246/5247 9 - L I N E LV D S C S I T E R M I N A T O R T H E I N F I N I T E P O W E R O F I ...
Datasheet PDF File LX5247 PDF File

LX5247
LX5247

Overview
UltraMAX TM LX5245/5246/5247 9 - L I N E LV D S C S I T E R M I N A T O R T H E I N F I N I T E P O W E R O F I N N O VA T I O N P R E L I M I N A R Y D A T A S H E E T DESCRIPTION The LX5245/5246/5247 ICs are Low Voltage Differential (LVD) Terminators designed to comply with the LVD termination specification in the SPI-2 document.
The LX5245/5246/5247 are designed specifically for LVD applications.
Because the LX5245/ 5246/5247 support only LVD, they have lower output capacitance than multimode terminators such as the LX5240.
The LX5245/5246/5247 Utilize Linfinity’s UltraMAX Technology which delivers the ultimate in SCSI bus performance while saving component cost and board area.
Elimination of the external capacitors also mitigates the need for a lengthy capacitor selection process.
The individual high bandwidth drivers also maximize channel separation and reduces channel-to-channel noise and cross talk.
The high-bandwidth UltraMAX architecture insures ULTRA-2 performance, while providing a clear migration path to ULTRA-3 and beyond.
When The LX5245/5246/5247 Are Enabled, The Differential Sense (DIFFSENSE) Pin Supplies A Voltage Between 1.
2V And 1.
4V.
In application, the terminator DIFFSENSE output is connected to the system DIFFSENSE line.
If there are no single ended or HVD devices attached to the system the LVD output will be enabled.
If the DIFFSENSE line is LOW, indicating a single ended device, the LX5245/ 5246/5247 output will be HiZ.
If the DIFFSENSE line is HIGH, indicating a high voltage differential device the LX5245/5246/ 5247 output will be HiZ.
The LX5245/5246/5247 ICs Have A TTL Compatible DISCONNECT Pin.
The LX5245/47 is active LOW and the LX5246 is active HIGH.
During sleep mode, power dissipation is reduced to a meager 5µA, while also placing all outputs in a HI Z state.
Also during sleep mode, the DIFFSENSE function is disabled and is placed in a HI Z state.
K E Y F E AT U R E S s 2.
5pF Typical Disabled Output Capacitance s Fast...


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