Microsemi LX5240
The LX5240 is a multimode SCSI terminator with plug-and-play capability that conforms to the SCSI Parallel Interconnect-2 (SPI-2) specification developed by the T10 standards committee for low voltage differential (LVD) termination, while providing backwards compatibility to the SCSI, SCSI-2, and SPI single-ended specifications. The LX5240 utilizes Linfinity’s UltraMAX technology which delivers the ultimate in SCSI bus performance while saving component cost and board area. When the LX5240 is enabled, the differential sense (DIFFSENSE) pin supplies a voltage between 1.2V and 1.4V.| Part No. | LX5240 |
|---|---|
| Datasheet | LX5240 Download |
| Manufacturer |  Microsemi |
| Description | MULTIMODE/ PLUG AND PLAY SCSI TERMINATOR |
| Buy | Stock & Price |
DESCRIPTION
Multimode compatibility permits the use of legacy devices on the bus without hardware alterations. Automatic mode selection is achieved through voltage detection on the diffsense line. 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 reduce channel to channel noise and cross talk. The high bandwidth architecture insures ULTRA2 performance while providing a clear migration path to ULTRA3 and beyond. In application, this pin is tied to the DIFFSENSE input of the corresponding LVD transceivers. This action enables the LVD transceiver function. DIFFSENSE is capable of supplying a maximum of 15mA. Tying the DIFFSENSE pin high places the LX5240 in a HI Z state indicating the presence of an HVD device. Tying the pin low places the part in a single-ended mode while also signaling the multimode transceiver to operate in a single-ended mode. The LX5240 supports full Plug and Play functionality with the DISCONNECT A and B pins.
