DESCRIPTION

The LX5241/42/43 is a multimode SCSI terminator that is compatible with to the SCSI SPI02 (Ultra2 SCSI), SCSI SPI-3 (Ultra3 SCSI or Ultra160 SCSI), and pending SCSI SPI-4 (Ultra320) specifications 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. 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.

KEY FEATURES

■ Auto-Selectable LVD or SingleEnded Termination

■ 3.0pF Maximum Disabled Output

Capacitance

■ Fast Response, No External

Capacitors Required

■ Compatible with Active Negation

Drivers

■ 15µA Supply Current in

Disconnect Mode

■ Logic Command Disconnects All

Termination Lines

■ Diffsense Line Driver

■ Ground Driver Integrated for

Single-Ended Operation

■ Current Limit and Thermal

Protection

■ Hot-Swap Compatible (SingleEnded)

■ Ultra160 compliant

■ See LX5245/5246 for LVD

Termination Only

■ Pin Compatible With DS2119

and UCC5630