UCC5606D Datasheet

SCSI Interface IC


The UCC5606 provides 9 lines of active termination fora small computer systems interface (SCSI) parallel bus.The SCSI standard recommends active termination atboth ends of the cable segment.The UCC5606 is ideal for high performance 3.3-V SCSIsystems. The key features contributing to such lowoperating voltage are the 0.1-V drop out regulator andthe 2.7-V reference. During disconnect the supplycurrent is typically only 0.5 μA, which makes the deviceattractive for battery powered systems.The UCC5606 is designed with an ultra-low channelcapacitance of 1.8 pF, which eliminates effects on signalintegrity from disconnected terminators at interim pointson the bus. UCC5606D Features •Complies with SCSI, SCSI–2 and SPI–2Standards•2.7-V to 5.25-V Operation•1.8-pF Channel Capacitance duringDisconnect•0.5-μA Supply Current in Disconnect Mode•110-Ω/2.5-kΩ Programmable Termination•Completely Meets SCSI Hot Plugging•–400-mA Sourcing Current for Termination•+400-mA Sinking Current for Active NegationDrivers•Trimmed Termination Current to 4%•Trimmed Impedance to 7%•Current Limit and Thermal ShutdownProtection


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