UCC5630MWPTR

9-Line 3-5V Multimode Terminator for SCSI Through Ultra3 SCSI 36-SSOP 0 to 70

DESCRIPON

The UCC5630 Multi-Mode Low Voltage Differential and Single Ended Terminator is both a single ended terminator and a low voltage differential terminator for the transition to the next generation SCSI Parallel Interface SPI-2. The low voltage differential is a requirement for the higher speeds at a reasonable cost and is the only way to have adequate skew budgets.

The transceivers can be incorporated into the controller, unlike SCSI high power differential EIA485 which requires external transceivers. Low Voltage differential is specified for Fast-40 and Fast-80, but has the potential of speeds up to Fast-320. The UCC5630 is SPI-2, SPI and Fast-20 compliant. Consult SSOP-36 and LQFP-48 Package Diagram for exact dimensions.

The UCC5630 can not be used with SCSI high voltage differential HVD EIA485. It will shut down when it sees high power differential to protect the bus. The pinning for high power differential is not the same as LVD or single ended and the bias voltage, current and power are also different for EIA485 differential.

FEATURES

• Auto Selection Multi-Mode Single Ended or Low Voltage Differential Termination

• 2.7V to 5.25V Operation

• Differential Failsafe Bias

• Thermal Packaging for Low Junction Temperature and Better MTBF

• Master/Slave Inputs

• Supports Active Negation

• Standby Disable Mode 5µA

• 3pF Channel Capacitance