Product details


Operating temperature range (C) 0 to 70 open-in-new Find other Other interfaces

Package | Pins | Size

TSSOP (PW) 24 34 mm² 4.4 x 7.8 open-in-new Find other Other interfaces


  • First LVD only Active Terminator
  • Meets SCSI SPI-2 Ultra2 (Fast-40) SPI-3 Ultra3/Ultra160 (Fast-80) and SPI-4 (Fast-160) Ultra320 Standards
  • 2.7-V to 5.25-V Operation
  • Differential Failsafe Bias

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The UCC5640 is an active terminator for low voltage differential (LVD) SCSI networks. This LVD only design allows the user to reach peak bus performance while reducing system cost. The device is designed as an active Y-terminator to improve the frequency response of the LVD bus. Designed with a 1.5pF channel capacitance, the UCC5640 allows for minimal bus loading for a maximum number of peripherals. With the UCC5640, the designer will be able to comply with the Fast-40 SPI-2, Fast-80 SPI-3 and Fast-160 SPI-4 specifications. The UCC5640 also provides a much needed system migration path for ever improving SCSI system standards. This device is available in the 24-pin TSSOP and 28-pin TSSOP for ease of layout use.

The UCC5640 is not designed for use in single ended (SE) or high voltage differential (HVD) systems.

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Technical documentation

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Type Title Date
* Datasheet Low Voltage Differential (LVD) SCSI 9 Line Terminator datasheet (Rev. C) May 19, 2003

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PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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