UC5607

` Complies with SCSI and SCSI-2 Standards
` 8pF Channel Capacitance during Disconnect
` SCSI Plug and Play, Dual Low Disconnect, Logic Low Command Disconnects All Termination Lines
` Meets SCSI Hot Plugging Capability
` -650mA Sourcing Current for Termination
` +200mA Sinking Current for Active Negation
` 200A Supply Current in Disconnect Mode
` Trimmed Termination Current to 7%
` Trimmed Impedance to 7%
` Provides Active Termination for 18 Lines

Lines

The UC5607 provides 18 lines of active termination for a SCSI (Small Computer Systems Interface) parallel bus. The SCSI standard recommends active termination at both ends of the cable segment.

The UC5607 provides a low disconnect feature which will disconnect all terminating resistors, and will disable the regulator, greatly reducing standby power. The output channels remain high impedance even without Termpwr applied.

The UC5607 terminator is specially designed with two disconnect pins for full SCSI Plug and Play (PnP) applications.

Custom power packages are utilized to allow normal operation at full power conditions (2 Watts).

Internal circuit trimming of UC5607 is utilized, first to trim the impedance to a 7% tolerance, and then most importantly, to trim the output current to a 7% tolerance, as close to the max SCSI spec as possible, which maximizes noise margin in fast SCSI operation.

Other features of UC5607 include thermal shutdown and current limit.

This UC5607 is offered in low thermal resistance versions of the industry standard 28 pin wide body SOIC, and 28 pin PLCC, as well as 24 pin DIP.